DEPARTMENT OF LICENSING AND REGULATORY AFFAIRS
DIRECTOR'S OFFICE
CONSTRUCTION CODE
Filed with the secretary of state on
These
rules take effect immediately upon filing with the secretary of state unless
adopted under section 33, 44, or 45a(9) of the administrative procedures act of
1969, 1969 PA 306, MCL 24.233, 24.244, or 24.245a. Rules adopted under these
sections become effective 7 days after filing with the secretary of state.
These rules become effective 120 days after filing with the secretary of state.
(By authority conferred on the director of the department of licensing and regulatory affairs by section 4 of the Stille-DeRossett-Hale single state construction code act, 1972 PA 230, MCL 125.1504, and Executive Reorganization Order Nos. 2003-1, 2008-4, and 2011-4, MCL 445.2011, 445.2025, and 445.2030)
R 408.30500, R 408.30501b, R 408.30505, R 408.30513, R 408.30515, R 408.30516, R 408.30518, R 408.30519, R 408.30521a, R 408.30524, R 408.30529, R 408.30530, R 408.30532, R 408.30533, R 408.30533a, R 408.30533b, R 408.30534, R 408.30535, R 408.30536, R 408.30539a, R 408.30541a, R 408.30544, R 408.30544b, and R 408.30547d of the Michigan Administrative Code are amended, R 408.30533c is added, and R 408.30501a, R 408.30506, R 408.30507, R 408.30509, R 408.30510, R 408.30510a, R 408.30521, R 408.30522a, R 408.30522b, R 408.30523, R 408.30523a, R 408.30525a, R 408.30528, R 408.30528a, R 408.30536a, R 408.30537, R 408.30537a, R 408.30537b, R 408.30537c, R 408.30537d, R 408.30538, R 408.30540, R 408.30542, R 408.30544a, R 408.30545, R 408.30545a, R 408.30547b, R 408.30547c, R 408.30547e, R 408.30547f, and R 408.30547g are rescinded, as follows:
PART 5. RESIDENTIAL CODE
R 408.30500 Applicable code.
Rule 500. The
provisions of the international residential code, 2015 2021 edition, including
appendices A AA, B AB, C AC, D AD, E AE, F AF, G AG, J AJ, K AK, N AN, O AO, P AP, R AR, and S AS except for
Sections R104.2, R104.3, R104.5, R104.7, R104.8, R104.8.1, R105.3, R105.3.1,
R105.3.2, R105.6, R105.9, R108.3, R108.4, R108.5, R108.6, R109.1, R112.2,
R112.3, R112.4, R113.1 to R113.3, R113.4, R114.1 to R114.4 and R114.2,
R313.1.1 to R313.2.1, R602.11, R602.12, N1102.3.2, tables R507.2.3, N1101.12.3(3)
and figure R507.2.1(2), R507.2.3(1), R507.2.3(2), and R507.2.4,
sections M1411.8, G2411.1.1.1 to G2411.1.1.5, G2439.7.2, P2503.9,
P2709.2.3, P2904.1.1 to P2904.8.2, P2905.1, P2905.2, figure P2904.2.4.2, table
P2904.2.2, tables P2904.6.2(1) to P2904.6.2(9), P3009.1 to P3009.11.1, E3902.15,
E3902.16, E3902.17,E3401.2 to E4304.5 and AJ102.4, the IBC-2015 2021, IECC-2015 2021, IMC-2015 2021, IPC-2015 2021, NFPA 70-2014 2023 listed in chapter
44 govern the construction, alteration, relocation, demolition, use, and
occupancy of buildings and structures, and, with the exceptions noted, the
international residential code is adopted by reference in these rules. All
references to the International Building Code, International Residential Code,
International Energy Conservation Code, National Electrical Code, International
Existing Building Code, International Mechanical Code, and International
Plumbing Code mean the Michigan Building Code, Michigan Residential Code,
Michigan Energy Code, Michigan Electrical Code, Michigan Rehabilitation Code
for Existing Buildings, Michigan Mechanical Code, and Michigan Plumbing Code,
respectively. ASHRAE 34-2022 edition: Designation and
Safety Classification of Refrigerants can be purchased at
www.techstreet.com/ashrae for $178.00. The code is available for
inspection and purchase at the Department of Licensing and Regulatory Affairs,
Bureau of Construction Codes, 611 West. Ottawa Street St., 1st
First Floor Ottawa
Building, Lansing, Michigan 48933. The code may be purchased from the
International Code Council, through the bureau’s website at
www.michigan.gov/bcc, at a cost as of the time of adoption of these rules of $118.00
$140.00
for each code book.
R 408.30501a Scope.
Rescinded.
Rule 501a.
Section R101.2 of the code is amended to read as follows:
R101.2. Scope.
The provisions of the Michigan residential code for 1- and 2-family dwellings shall
apply to the construction, alteration, movement, enlargement, replacement,
repair, equipment, use and occupancy, location, removal and demolition of detached
1- and 2-family dwellings and townhouses not more than 3 stories above grade
plane in height with a separate means of egress and their accessory structures.
Exceptions:
1. Live/work
units complying with the requirements of Section 419 of the Michigan building
code may be built as 1- and 2-family dwellings or townhouses. Fire suppression
required by Section 419.5 of the Michigan building code when constructed under
the Michigan residential code for 1- and 2-family dwellings shall conform to
Section P2904.
2.
Owner-occupied bed and breakfast and board and room facilities may be
constructed in accordance with sections 4b and 13c of the Stille-DeRossett-Hale
single state construction code act, 1972 PA 230, MCL 125.1504b and MCL
125.1513c.
R 408.30501b Intent.
Rule 501b.
Sections R101.3 and 101.4
of the code are is amended to read as follows:
R101.3. Intent.
The purpose of this code is to establish minimum requirements to safeguard the
public safety, health, and general welfare through affordability, structural
strength, means of egress facilities, stability, sanitation, light and
ventilation, energy conservation, and safety to life and property from fire and
other hazards attributed to the built environment, and to provide safety to
fire fighters and emergency responders during emergency operations. The
Stille-DeRossett-Hale single state construction code act, 1972 PA 230, MCL
125.1501 to MCL 125.1531, takes precedence over all provisions of
this code.
R101.4.
Severability. If any section, subsection, sentence, clause, or phrase of this
code is found to be invalid by a court of competent jurisdiction, such decision
will not affect the validity of the remaining portions of this code.
R 408.30505 Work exempt from permit.
Rule 505. Section R105.2 of the code is amended to read as follows:
R105.2. Work exempt from permit. Exemption from the permit requirements of the code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of the code or any other laws or ordinances of this jurisdiction. Permits are not required for any of the following:
(a) Building permits shall not be required for any of the following:
(i) One-story detached. accessory structures, if the floor area does not exceed 200
square feet, (18.58 m2
meters
squared).
(ii) A fence
that is not more than 7 feet, (2,134 mm millimeters), high.
(iii) A
retaining wall that is not more than 4 feet, (1,219 mm millimeters), in height
measured from the bottom of the footing to the top of the wall, unless
supporting a surcharge.
(iv) A water tank supported directly upon grade if the capacity is not more than
5,000 gallons (18,927 L liters) and the ratio of
height to diameter or width is not greater than 2 to 1.
(v) A sidewalk
and driveway not more than 30 inches, (762 mm millimeters), above adjacent grade
and not over any basement or story below and not part of an accessible route.
(vi) Painting, papering, tiling, carpeting, cabinets, counter tops, and similar finish
work.
(vii) A
prefabricated swimming pool that is less than 24 inches, (610 mm
millimeters), deep, and not
greater than 5,000 gallons, (18, 925 L liters), and is installed
entirely above ground.
(viii) Swings and other playground equipment accessory to detached 1- or 2-family
dwellings.
(ix) Window awnings in group R-3 and U occupancies, supported by an exterior
wall that do not
project more than 54 inches, (1,372 mm
millimeters), from the exterior
wall and do not require additional support, as applicable in Ssection 101.2 and
group U occupancies.
(x) Decks,
porches, patios, landings, or similar structures not exceeding 200 square feet, (18.58 m2
meters
squared), in area, that are
not more than 30 inches, (762 mm millimeters), above grade at
any point as prescribed by Ssection R312.1.1, are not attached
to a dwelling or its accessory structures, are not within 36 inches, (914 mm
millimeters), of a dwelling
or its accessory structures, and do not serve any ingress or egress door of the
dwelling or its accessory structures.
(b)
Electrical permits shall not be required, as in accordance with the Michigan electrical
code, R 408.30801 to R 408.30880, for any of the following:
(i) Repairs and
maintenance: Minor repair work, including the replacement of lamps or the
connection of approved portable electrical equipment to approved permanently
installed receptacles.
(ii) Radio and
television transmitting stations: The provisions of the code do not apply to
electrical equipment used for radio and television transmissions,but do apply
to equipment and wiring for power supply and to the installation of towers and
antennas.
(iii) Temporary
testing systems: A permit is not required for the installation of any temporary
system required for the testing or servicing of electrical equipment or apparatus.
(bc) Mechanical
permits shall not be required for any of the following:
(i) A portable
heating or gas appliance that has inputs of less than 30,000 BTU’sBritish thermal
units, BTUs,
per hour.
(ii) Portable ventilation appliances and equipment.
(iii) A portable cooling unit.
(iv) Steam, hot water, or chilled water piping within any heating or cooling equipment or appliances regulated by this code.
(v) Replacement
of any minor part that does not alter the approval of equipment or an appliance
or make such equipment or appliance unsafe. Except for a heat
exchanger, replacement of any manufacturer installed part on a listed and
labeled appliance or listed and labeled equipment, if the replacement does not
alter the approval of the appliance or equipment or make the appliance or
equipment unsafe.
(vi) A portable evaporative cooler.
(vii)
Self-contained refrigeration systems that contain 10 pounds, (4.5 kg
kilograms), or less of refrigerant,
or that are actuated by motors of 1 horsepower, (0.75kW kilowatt), or less.
(viii) Portable fuel cell appliances that are not connected to a fixed piping system and are not interconnected to a power grid.
(ix) An oil burner that does not require connection to a flue, such as an oil stove and a heater equipped with a wick.
(x) A
portable gas burner that has inputs of less than 30,000 BTU’s per hour.
(xi)(x) When changing or
relocating a gas meter or regulator, a permit is not required when installing
gas piping which shall be limited to 10 feet, (3,005 mm millimeters), in length and not
more than 6 fittings.
(xii)(xi) When installing
geothermal vertical closed loops under the supervision of a mechanical
contractor licensed in HVAC as long as the company meets both the following:
(A) Has obtained a certificate of registration as a well drilling contractor pursuant to part 127 of the public health code, 1978 PA 368, MCL 333.12701 to 333.12771.
(B) Has
installed the geothermal vertical closed loops in accordance with the department
of environment, Great Lakes, and energy's best practices regarding geothermal
heat pump closed loops. Exemption from the permit requirements of this code
shall not be deemed to grant authorization for work to be done in violation of
the provisions of this code or other laws or ordinances of this jurisdiction.
(cd) Plumbing permits
shall not be required for either of the following:
(i) The stopping of leaks in drains, water, soil, waste, or vent pipe. If any concealed trap, drainpipe, water, soil, waste, or vent pipe becomes defective and it becomes necessary to remove and replace the same with new material, then the work is considered as new work and a permit shall be obtained and inspection made as provided in the code.
(ii) The clearing of stoppages or the repairing of leaks in pipes, valves, or fixtures, and the removal and reinstallation of water closets, if the repairs do not involve or require the replacement or rearrangement of valves, pipes, or fixtures.
R 408.30506 Submittal
documents. Rescinded.
Rule 506. Sections
R106.1.4 and R802.10.1 of the code are amended and
Section R106.1.4
and figure 802.10.1 are added to the code to read as follows:
R106.1.4. Truss
design data. As an alternative to the submission of truss design drawings,
figure R802.10.1, the truss design data sheet, may be provided to the building
official as part of the construction documents at the time of application.
Truss design drawings shall be submitted to the building official prior to
truss installation as required by Section R802.10.1. R802.10.1 Truss design
drawings. Truss design drawings, prepared in conformance with Section
R802.10.1, shall be provided to the building official and approved prior to
installation. The truss design data sheet, figure R802.10.1, may be provided to
the building official at the time of permit application, as an alternative to
design drawings as permitted in SectionR106.1.4. Truss design drawings shall
include, at a minimum, the information: specified below. Truss design drawings
shall be provided with the shipment of trusses delivered to the jobsite.
(1) Slope or
depth, span, and spacing.
(2) Location of
all joints.
(3) Required
bearing widths.
(4) Design loads
as applicable.
(a) Top chord
live load (including snow loads).
(b) Top chord
dead load.
(c) Bottom chord
live load.
(d) Bottom chord
dead load.
(e) Concentrated
loads and their points of application.
(f) Controlling
wind and earthquake loads.
(5) Adjustments
to lumber and joint connector design values for conditions of use.
(6) Each
reaction force and direction.
(7) Joint
connector type and description, (e.g. size, thickness, or gauge) and the dimensioned
location of each joint connector except where symmetrically located relative to
the joint interface.
(8) Lumber size,
species, and grade for each member.
(9) Connection
requirements for the following:
(a) Truss to
truss girder.
(b) Truss ply to
ply.
(c) Field
splices.
(10) Calculated
deflection ratio and/or maximum description for live and total load.
(11) Maximum
axial compression forces in the truss members to enable the building designer
to design the size, connections, and anchorage of the permanent continuous lateral
bracing. Forces shall be shown on the truss design drawing or on supplemental
documents.
(12) Required
permanent truss member bracing location.
R 408.30507 Duct termination. Rescinded.
Rule 507. Section M1502.3 of the code is amended to read as follows:
M1502.3. Exhaust ducts shall terminate on the outside of the building. Exhaust
duct terminations shall be in accordance with the dryer manufacturer’s
installation instructions. If the manufacturer’s instructions do not specify a
termination location, the exhaust duct shall terminate no less than 3 feet (914
mm) in any direction from openings into buildings or ventilated section in a
soffit. Exhaust duct terminations shall be equipped with a backdraft damper.
Screens shall not be installed at the duct termination.
R 408.30509Frame and masonry inspection.Rescinded.
Rule 509. Section R109.1.4 of the code is amended to read as follows:
R109.1.4. Frame and masonry inspection. Inspection of framing construction shall be made after the roof, all framing, firestopping, draftstopping, and bracing are in place and after the plumbing, mechanical, and electrical rough inspections are approved. Masonry inspections shall be made after the completed installation of base course flashing as specified in section R703.7.5 of the code and water-resistive barrier as specified in section R703.2 of the code and after the masonry construction is completed.
R 408.30510 Use
and occupancy. Rescinded.
Rule 510.
Sections R110.1, R110.2, and R110.3 of the code are amended to read as follows:
R110.1. Use and
occupancy. A building or structure shall not be used or occupied, and a change
in the existing occupancy classification of a building or structure or portion
thereof shall not be made, until a certificate of occupancy has been issued in
accordance with the act.
R110.2. Change
in use. A change in the character or use of an existing structure shall not be
made, except as specified in the Michigan building code, R 408.30401 to
R 408.30499.
R110.3
Certificate issued. After the building official inspects the building or
structure and finds no violations of the provisions of this code or other laws
that are enforced by the department of building safety, the building official
shall issue a certificate of occupancy which shall contain the following:
(a) The building
permit number.
(b) The address
of the structure.
(c) A
description of that portion of the structure for which the certificate is
issued.
(d) A statement
that the described portion of the structure has been inspected for compliance
with the requirements of this code.
(e) The name of
the building official.
(f) The edition
of the code under which the permit was issued.
(g) Any special
stipulations and conditions of the building permit.
R 408.30510a Fire classification. Rescinded.
Rule 510a. Section R902.1 is amended
and Sections R902.3 and R902.4 of the code are added to read as follows:
R902.1. Roof covering materials. Roofs
shall be covered with materials as set forth in Sections R904 and R905. Class
A, B, or C roofing shall be installed in jurisdictions designated by law as
requiring their use or where the edge of the roof is less than 3 feet (914 mm)
from a lot line. Classes A, B, and C roofing required by this section to be
listed shall be tested in accordance with UL 790 or ASTM E 108.
Exceptions:
1. Class A roof assemblies include
those with coverings of brick, masonry, and exposed concrete roof deck.
2. Class A roof assemblies also include
ferrous or copper shingles or sheets, metal sheets and shingles, clay or
concrete roof tile, or slate installed on noncombustible decks.
3. Class A roof assemblies include
minimum 16 ounces per square foot copper sheets installed over combustible
decks.
4. Class A roof assemblies include
slate installed over underlayment over combustible decks.
R 408.30513 Definitions.
Rule
513. The definitions of attic and sunroom addition in Ssection R202 of the code are amended to read as follows:
R202. Definitions.
(a) “Attic,
uninhabitable with limited storage” means uninhabitable attics with limited storage
where the minimum clear height between joists and rafters is 42 inches, (1,063 mm
millimeters), or greater or where there
are not 2 or more adjacent trusses with web configurations capable of
accommodating an assumed rectangle 42 inches, (1,063 mm
millimeters), high
by 24 inches, (610 mm millimeters), in
width, or greater, within the plane of the trusses.
(b)
“Attic, uninhabitable without storage” means uninhabitable attics without
storage where the maximum clear height between joists and rafters is less than
42 inches, (1,063 mm millimeters), or
where there are not 2 or more adjacent trusses with web configurations capable of
accommodating an assumed rectangle 42 inches, (1,063 mm
millimeters), high
by 24 inches, (610 mm millimeters), in
width, or greater, within the plane of the trusses. Building Inspector”
means the individual who is responsible for the administration and enforcement
of the construction of buildings, structures, or appurtenances under the state
construction code specified in R 408.30499 and who is registered in compliance
with 2016 PA 407, MCL 339.5101 to 339.6133.
(c) “Building
Oofficial” means the person who is appointed and employed by a
governmental subdivision, who is charged with the administration and
enforcement of the state codes specified in R 408.30499, and who is
registered in compliance with 2016 PA 407, MCL 339.5101 to 339.6133.
(d) “Registered
design professional” means an individual who is licensed under the occupational
code, 1980 PA 299, MCL 339.101 to 339.29192677.
(e) “
Registered inspector” means an individual who is licensed under the
occupational code, 1980 PA 299, MCL 339.101 to 339.2919."Sunroom
addition" means a new structure with glazing in excess of 40% of the gross
area of the structure's exterior walls and roof added to an existing dwelling.
R 408.30515 Ground snow loads.
Rule 515. Figure R301.2(5) andTtable R301.2(1) of the code are amended andTtable R301.2(5) is added to the code to read as follows:
![](2022-016%20LR%20Construction%20Code,%20Part%205_Strike-Bold_Version_of_Final_Rule(s)_files/image001.jpg)
![](2022-016%20LR%20Construction%20Code,%20Part%205_Strike-Bold_Version_of_Final_Rule(s)_files/image002.jpg)
Table R301.2(5)P
Michigan Ground Snow Loads by Jurisdiction
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County |
Ground Snow Load |
Jurisdictions |
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Alcona |
50 |
All |
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Alger |
70 |
All |
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Allegan |
50 |
All except:
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35 |
city of Allegan city of Otsego city of Plainwell city of Wayland village of Hopkins village of Martin township of Allegan township of Dorr township of Gun Plain township of Hopkins township of Leighton township of Martin township of Monterey township of Otsego township of Salem township of Trowbridge township of Watson township of Wayland |
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Alpena |
50 |
All |
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Antrim |
60
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All except: |
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70 |
township of Banks township of Central Lake township of Echo township of Jordan township of Warner |
|
Arenac |
40 |
All |
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Baraga |
70 |
All |
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Barry |
35 |
All except: |
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30 |
village of Nashville township of Assyria township of Barry township of Johnstown township of Maple Grove |
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Bay |
35 |
All except: |
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40 |
city of Pinconning township of Fraser township of Garfield township of Gibson township of Mt. Forest township of Pinconning |
|
Benzie |
60 |
All |
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Berrien |
50 |
All |
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Branch |
25 |
All except: |
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20 |
township of Algansee township of California township of Gilead township of Kinderhook township of Ovid |
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Calhoun |
25 |
All except: |
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30 |
city of Battle Creek city of Marshall city of Springfield village of Athens township of Athens township of Battle Creek township of Bedford township of Convis township of Emmet township of Lee township of Leroy township of Marengo township of Marshall township of Newton township of Pennfield |
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Cass |
30 |
All except: |
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50 |
city of Dowagiac village of Cassopolis |
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village of Edwardsburg township of Howard township of La Grange township of Milton township of Pokagon township of Silver Creek township of Wayne |
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Charlevoix |
70 |
All |
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Cheboygan |
70 |
All except: |
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60 |
city of Cheboygan village of Afton village of Wolverine township of Aloha township of Benton township of Ellis township of Grant township of Koehler township of Nunda township of Walker township of Waverly township of Wilmot |
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50 |
township of Forest |
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Chippewa |
70 |
All except: |
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60 |
village of DeTour township of DeTour township of Raber |
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Clare |
40 |
All except: |
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50 |
township of Summerfield township of Winterfield |
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Clinton |
30 |
All except: |
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35 |
city of St. Johns village of Fowler village of Maple Rapids village of Westphalia township of Bengal township of Dallas township of Essex township of Greenbush township of Lebanon township of Westphalia |
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Crawford |
50 |
All |
|
Delta |
60 |
All except: |
|
|
70 |
township of Garden township of Masonville township of Nahma |
|
Dickinson |
60 |
All |
|
Eaton |
30 |
All except: |
|
|
35 |
village of Mulliken village of Sunfield township of Sunfield |
|
Emmet |
70 |
All |
|
Genesee |
30 |
All except: |
|
|
25 |
city of Davison city of Fenton city of Grand Blanc city of Linden village of Gaines village of Goodrich township of Argentine township of Atlas township of Davison township of Fenton township of Grand Blanc township of Mundy |
|
Gladwin |
40 |
All |
|
Gogebic |
60 |
All |
|
Grand Traverse |
60 |
All |
|
Gratiot |
35 |
All |
|
Hillsdale |
20 |
All except: |
|
|
25 |
city of Litchfield township of Litchfield township of Scipio |
|
Houghton |
80 |
All except: |
|
|
70 |
township of Adams township of Chassell township of Duncan township of Elm River township of Laird township of Portage |
|
90 |
village of Calumet village of Copper City village of Lake Linden village of Laurium township of Calumet township of Schoolcraft
|
|
|
Huron |
35 |
All |
|
Ingham |
25 |
All except: |
|
|
30 |
city of East Lansing city of Lansing city of Mason township of Alaiedon township of Aurelius township of Delhi township of Lansing township of Meridian township of Williamston |
|
Ionia |
35 |
All |
|
Iosco |
40 |
All |
|
Iron |
60 |
All |
|
Isabella |
40 |
All except: |
|
|
35 |
village of Shepherd township of Chippewa township of Coe |
|
|
|
township of Fremont township of Lincoln township of Union |
|
Jackson |
25 |
All except: |
|
|
20 |
village of Brooklyn township of Columbia township of Norvell |
|
Kalamazoo |
30 |
All except: |
|
|
35 |
city of Parchment township of Alamo township of Cooper township of Oshtemo |
|
Kalkaska |
60 |
All |
|
Kent |
35 |
All except: |
|
|
40 |
city of Cedar Springs village of Casnovia village of Kent City village of Sand Lake village of Sparta township of Nelson township of Solon township of Sparta township of Tyrone |
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Keweenaw |
90 |
All except: |
|
|
100 |
township of Eagle Harbor township of Grant township of Houghton |
|
Lake |
60 |
All except: |
|
|
50 |
township of Chase township of Cherry Valley township of Ellsworth township of Pinora township of Pleasant Plains township of Yates |
|
Lapeer |
25 |
All except: |
|
|
30 |
village of Clifford village of Columbiaville village of North Branch village of Otter Lake township of Burlington township of Burnside township of Deerfield township of Marathon township of North Branch township of Oregon township of Rich |
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Leelanau |
60 |
All |
|
Lenawee |
20 |
All |
|
Livingston |
25 |
All |
|
Luce |
70 |
All |
|
Mackinac |
60 |
All except: |
|
|
70 |
township of Newton township of Portage |
|
Macomb |
25 |
All |
|
Manistee |
60 |
All |
|
Marquette |
70 |
All except: |
|
|
60 |
township of Ewing township of Wells township of Republic |
|
Mason |
60 |
All |
|
Mecosta |
40 |
All |
|
Menominee |
60 |
All |
|
Midland |
35 |
All except: |
|
|
40 |
city of Coleman village of Sanford township of Edenville township of Geneva township of Hope township of Mills township of Warren |
|
Missaukee |
50 |
All except: |
|
|
60 |
township of Bloomfield township of Caldwell township of Pioneer |
|
Monroe |
20 |
All |
|
Montcalm |
35 |
All except: |
|
|
40 |
village of Howard City village of Lakeview village of Pierson township of Cato township of Maple Valley township of Pierson township of Reynolds township of Winfield |
|
Montmorency |
50 |
All |
|
Muskegon |
40 |
All except: |
|
|
50 |
township of Holton township of Blue Lake |
|
|
60 |
city of Montague city of Muskegon city of Muskegon Heights city of North Muskegon city of Norton Shores city of Roosevelt Park city of Whitehall township of Dalton township of Fruitland township of Fruitport township of Laketon township of Montague township of Muskegon township of Sullivan township of Whitehall township of White River village of Fruitport village of Lakewood Club |
|
Newaygo |
40 |
All except: |
|
|
50 |
village of Hesperia township of Barton township of Beaver township of Denver township of Home township of Lilley township of Merrill township of Troy
|
|
Oakland |
25 |
All |
|
Oceana |
60 |
All except: |
|
|
50 |
village of Hesperia village of Walkersville township of Colfax township of Crystal township of Elbridge township of Ferry township of Greenwood township of Leavitt township of Newfield township of Otto |
|
Ogemaw |
40 |
All except: |
|
|
50 |
city of Rose City township of Cummings township of Foster township of Goodar township of Hill township of Klacking township of Ogemaw township of Rose |
|
Ontonagon |
70 |
All except: |
|
|
60 |
township of Haight township of Interior township of McMillan |
|
Osceola |
50 |
All except: |
|
|
40 |
city of Evart village of Hersey township of Evart township of Hersey township of Orient township of Osceola township of Sylvan |
|
Oscoda |
50 |
All |
|
Otsego |
50 |
All except: |
|
|
60
|
village of Elmira village of Vanderbilt township of Corwith township of Elmira township of Hayes township of Livingston |
|
Ottawa |
50 |
All except: |
|
|
35 |
township of Georgetown township of Jamestown township of Tallmadge township of Zeeland |
|
|
40 |
city of Coopersville township of Allendale township of Blendon township of Chester township of Polkton township of Wright |
|
Presque Isle |
50 |
All except: |
|
|
60 |
township of Bearinger |
|
Roscommon |
50 |
All except: |
|
|
40 |
township of Nester |
|
Saginaw |
35 |
All except: |
|
|
30 |
city of Frankenmuth village of Birch Run village of Chesaning village of Oakley township of Albee township of Birch Run township of Brady township of Bridgeport township of Chapin township of Chesaning township of Frankenmuth township of Maple Grove township of St. Charles |
|
|
|
township of Taymouth |
|
Sanilac |
30 |
All except: |
|
|
25 |
village of Melvin township of Fremont township of Worth |
|
|
35 |
village of Minden City township of Austin township of Greenleaf township of Minden |
|
Schoolcraft |
70 |
All |
|
Shiawassee |
30 |
All except: |
|
|
25 |
village of Byron township of Burns |
|
St. Clair |
25 |
All |
|
St. Joseph |
30 |
All except: |
|
|
25 |
city of Sturgis village of Burr Oak village of Colon village of White Pigeon township of Burr Oak township of colon township of Fawn River township of Sherman township of Sturgis township of White Pigeon |
|
Tuscola |
30 |
All except: |
|
|
35 |
village of Caro village of Cass City village of Fairgrove village of Gagetown village of Reese village of Unionville township of Akron township of Almer township of Columbia township of Elkland township of Elmwood township of Fairgrove township of Gilford township of Wisner |
|
Van Buren |
50 |
All except: |
|
|
30 |
township of Porter |
|
|
35 |
city of Gobles village of Decatur village of Lawton village of Mattawan village of Paw Paw township of Almena township of Antwerp township of Bloomingdale township of Decatur township of Paw Paw township of Pine Grove township of Waverly |
|
Washtenaw |
25 |
All except: |
|
|
20 |
city of Ann Arbor city of Saline city of Ypsilanti village of Manchester township of Augusta township of Bridgewater township of Lodi township of Manchester township of Pittsfield township of Saline township of Superior township of York township of Ypsilanti |
|
Wayne |
20 |
All except: |
|
|
25 |
city of Northville |
|
Wexford |
60 |
All except: |
|
|
50 |
township of Clam Lake |
|
R 408.30516 Design criteria.
Rule 516. Table R301.2(1) of the code is amended and figures R301.2(7) and R301.2(8) are added to the code to read as follows:
TABLE R 301.2(1)
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
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For SI: 1 pound
per square foot = 0.0479 kN/m2, 1 mile per hour = 1.609 km/h.
Ground Snow Load |
WIND DESIGN
|
SEISMIC DESIGN CATEGORY |
SUBJECT TO DAMAGE FROM |
ICE BARRIER UNDERLAYMENT REQUIREDh
|
FLOOD HAZARDg
|
AIR FREEZING INDEXi |
MEANANNUAL TEMPj |
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Speedd (mph)
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Topographic Effectsk |
Special wind regionl |
Windborne debris zonem |
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Weatheringa |
Frost Line depthb |
Termitec |
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Table R301.2(4) |
107 |
No |
No |
No |
R301.2.2.1 |
Severe |
42” |
Figure R318.4 |
Yes |
See Footnoteg |
Figure R403.3.(2) |
See Footnotej |
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MANUAL J DESIGN CRITERIA |
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Elevation |
Altitude correction Factore |
Coincident wet bulb |
Indoor winter design dry-bulb temperature |
Indoor winter design dry bulb temperature |
Outdoor winter design dry-bulb temperature |
Heating temperature difference |
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- |
- |
- |
- |
- |
- |
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Latitude |
Daily range |
Indoor Summer design relative Humidity |
Indoor Summer design relative humidity |
Indoor summer design dry-bulb temperature |
Outdoor summer design dry-bulb temperature |
Cooling temperature difference |
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- |
- |
- |
- |
- |
- |
- |
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For SI: 1 pound per square foot = 0.0479 kilopascals, 1 mile per hour = 0.447 meter /second.
(a) Weathering
may require a higher strength concrete or grade of masonry than necessary to
satisfy the structural requirements of this code. The weathering column shall
be filled in with the weathering index, (i.e., “negligible”, “moderate,” or
“severe”), for concrete as
determined from the weathering probability map [figure R301.2(3)]. The grade
of masonry units shall be determined from ASTM C 34, C 55, C 62, C 73, C 90, C
129, C 145, C 216 or C 652 as listed in chapter 44.Where weathering
requires a higher strength concrete or grade of masonry than necessary to satisfy
the structural requirements of this code, the frost line depth strength
required for weathering shall govern. The weathering column shall be filled in
with the weathering index, "negligible," "moderate," or
"severe" for concrete as determined from figure R301.2(1). The grade
of masonry units shall be determined from ASTM C34, ASTM C55, ASTM C62, ASTM
C73, ASTM C90, ASTM C129, ASTM C145, ASTM C216, or ASTM C652.
(b) The
frost line depth may be modified as provided in section R403.1.4 of the code. Where the frost
line depth requires deeper footings than indicated in figure R403.1(1), the
frost line depth strength required for weathering shall govern. The
jurisdiction shall fill in the frost line depth column with the minimum depth
of footing below finish grade.
(c) The
jurisdiction shall fill in this part of the table to indicate the need for
protection depending on whether there has been a history of local damage. The jurisdiction shall fill in this part of the table
to indicate the need for protection depending on whether there has been a
history of local subterranean termite damage.
(d) The
jurisdiction shall fill in this part of the table with the wind speed from the
basic wind speed map, [figure R301.2(4)]. Wind exposure
category shall be determined on a site-specific basis in accordance with
section R301.2.1.4 of the code. The jurisdiction
shall fill in this part of the table with the wind speed from the basic wind
speed map, figure R301.2(2). Wind exposure category shall be determined on a
site-specific basis in accordance with section R301.2.1.4.
(e)
The winter design temperature criteria shall be taken from appendix D of the
Michigan plumbing code, R 408.30701 to R 408.30796. The jurisdiction shall fill in this section of the
table to establish the design criteria using table 10A from ACCA Manual J or
established criteria determined by the jurisdiction.
(f) Design
category determined from section R301.2.2.1 of the code. The jurisdiction shall fill in this part of the table
with the seismic design category determined from section R301.2.2.1.
(g) The jurisdiction shall fill in
this part of the table with both of the following: The jurisdiction
shall fill in this part of the table with the date of the jurisdiction's entry
into the National Flood Insurance Program, which is the date of adoption of the
first code or ordinance for management of flood hazard areas, and the title and
date of the currently effective Flood Insurance Study or other flood hazard
study.
(ih) The date of
the jurisdiction’s entry into the national flood insurance program (date of
adoption of the first code or ordinance for management of flood hazard areas). In accordance with
sections R905.1.2, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1 and
R905.8.3.1, where there has been a history of local damage from the effects of
ice damming, the jurisdiction shall fill in this part of the table with
"YES." Otherwise, the jurisdiction shall fill in this part of the
table with "NO."
(ii) The date(s) of the currently
effective FIRM and FBFM or other flood hazard map adopted by the community, as
may be amended. Absent (i) or (ii), flood hazard areas as determined by the
state under its administration of the Part 31, floodplain regulatory authority
of the natural resources and environmental protection act, 1994 PA 451, MCL
324.101 to 324.90106, shall become the basis for regulation of floodplain
development within the community and section R408.7 of the code shall apply to
buildings and structures within those areas. The jurisdiction
shall fill in this part of the table with the 100-year return period air
freezing index, BF-days, from figure R403.3(2) or from the 100-year, 99 percent,
value on the National Climatic Data Center data table entitled, "Air
Freezing Index-USA Method (Base 32"F)."
(hj) In
accordance with sections R905.2.7, R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1
and R905.8.3.1 of the code, for areas where the average daily temperature in
January is 25 degrees Fahrenheit, (-4 degrees Celsius,) or less, or
where there has been a history of local damage from the effects of ice damming,
the jurisdiction shall fill in this part of the table with “YES”. Otherwise,
the jurisdiction shall fill in this part of the table with “NO”. The jurisdiction shall fill in this part of the table
with the mean annual temperature from the National Climatic Data Center data table
entitled, "Air Freezing Index-USA Method (Base 32°degrees Fahrenheit)."
(ik) The
jurisdiction shall fill in this part of the table with the 100-year return
period air freezing index, (bf-days), from figure
R403.3(2) or from the 100-year, (99%), value on the national
climatic data center data table “air freezing index-USA method (base 32 degrees
Fahrenheit)”. In
accordance with section R301.2.1.5, where there is local historical data
documenting structural damage to buildings due to topographic wind speed-up
effects, the jurisdiction shall fill in this part of the table with
"YES." Otherwise, the jurisdiction shall indicate "NO" in
this part of the table.
(jl)The jurisdiction shall fill in this part of the table with the mean annual temperature from the national climatic data center data table “air freezing index-USA method (base 32 degrees Fahrenheit)” atwww.ncdc.noaa.gov/fpsf.htmlIn accordance with figure R301.2(2), where there is local historical data documenting unusual wind conditions, the jurisdiction shall fill In this part of the table with "YES" and identify any specific requirements. Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
(m) In accordance with section R301.2.1.2, the jurisdiction shall indicate the wind-borne debris wind zone or zones. Otherwise, the jurisdiction shall indicate "NO" in this part of the table.
(n) The jurisdiction shall fill in these sections of the table to establish the design criteria using table la or lb from ACCA Manual .1 or established criteria determined by the jurisdiction.
(o) The jurisdiction shall fill in this section of the table using the Ground Snow Loads in figures R301.2(3) and R301.2(4).
R 408.30518 Means of egress.
Rule 518. Sections R311.6.4 and R311.2.1 are added to the code and R311.2 of the code is amended to read as follows:
R311.6.4 Modular ramps. Modular ramp systems approved pursuant to the act are not required to comply with the requirements of section R403.1.4 of the code.
R311.2. Door
type and size. The required exit door shall be a side-hinged door not less than
3 feet, (914 mm
millimeters), in width and 6
feet, 8 inches, (2,032 mm millimeters), in height. Other
exterior hinged or sliding doors shall not be less than 24 inches (6,096 mm millimeters) in width and 6
feet, 6 inches, (1,981 mm millimeters), in height.
R311.2.1.
Interior doors. Interior doors shall be not less than 24 inches, (6,096 mm millimeters), in width and 6
feet, 6 inches, (1,524 mm millimeters), in height.
Exception: Doors to areas less than 10 square feet of floor area.
R 408.30519 Treads and risers.
Rule 519. Sections R311.7.45.1 and R 311.7.45.2 of the code are amended to read as follows:
R311.7.5.1. Riser height. The maximum riser height shall be 8-1/4 inches,(210mmmillimeters). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch,(9.5mmmillimeters).
R311.7.5.2. Tread depth. The minimum tread depth shall be 9 inches,(229mmmillimeters). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch,(9.5mmmillimeters). Winder treads shall have a minimum tread depth of 10 inches,(254mmmillimeters), measured as above at a point 12 inches,(305mmmillimeters), from the side where the treads are narrower. Winder treads shall have a minimum tread depth of 6 inches,(152mmmillimeters), at any point. Within any flight of stairs, the greatest winder tread depth at the 12-inch,(305mmmillimeters), walk line shall not exceed the smallest by more than 3/8 inch,(9.5mmmillimeters).
R 408.30521Elevation requirements.Rescinded.
Rule 521. Section R322.2.1 of the code is amended to read as follows;
R322.2.1. Elevation requirements. (1) Buildings and structures shall have the lowest floor including basements elevated so the lowest point of the floor's concrete or subfloor surface is 1 foot (305 mm) or more above the design flood elevation. The bottom of the lowest horizontal structural member of the floor system shall not be lower than the design flood elevation. Compliance with this elevation requirement shall be based upon measurement taken from the floor surface without the final floor covering and from the bottom of the lowest horizontal structural member of the floor system.
(2) Crawl space interior floor grade elevation shall comply with R408.6 of the code.
(3) Basement floors that are below grade on all sides shall be considered lowest floors and shall be elevated so that the lowest point of the floor surface is 1 foot (305 mm) or more above the design flood elevation.
Compliance with this elevation requirement shall be based upon measurement taken from the floor surface without the final floor covering.
Exception: Enclosed areas below the design flood elevation, including basements that have floors which are not below grade on all sides, shall meet the requirements of section R322.2.2 of the code.
R 408.30521a Rooftop mounted photovoltaic panel systems.
Rule 521a.
Sections R9097.1, R9097.2, and R9097.3 of the code are
added to read as follows:
R9097.1. General. The
installation of photovoltaic panel systems that are mounted on or above the
roof covering shall comply with the provisions of this code, Ssection R324, and
NFPA 70.
R9097.2. Structural
requirements. Rooftop mounted photovoltaic panel systems shall be designed to
structurally support the system and withstand gravity loads in accordance with
chapter 3. The roof upon which these systems are installed shall be designed
and constructed to support the loads imposed by such systems in accordance with
chapter 8.
R9097.3.
Installation. Rooftop mounted photovoltaic systems shall be installed in
accordance with the manufacturer’s instructions. Roof penetrations shall be
flashed and sealed in accordance with this chapter.
R
408.30522a Vapor retarders. Rescinded.
Rule 522a.
Section R601.3 of the code is amended to read as follows:
R601.3. Vapor
retarders. Class I or II vapor retarders shall be provided on the interior
side of frame walls in zones 5, 6, 7, 8, and marine 4.
Exceptions:
1. As permitted
in table R702.7.1.
2. Class III or
no vapor retarder shall be permitted on the interior side of below grade wall
assemblies. Class I or II vapor retarders shall be permitted on the interior
side of the wall assembly when no air permeable insulation is installed in the
below grade wall assemblies.
3. Construction
where moisture or its freezing will not damage the materials.
R 408.30522bAir freezing index.Rescinded.
Rule 522b. Table R403.3(2) of the code is amended to read as follows:
Table R403.3(2)
Air Freezing Index
for Michigan Locations by County
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R 408.30523 Placement
of lag screws or bolts in deck ledgers and band joists. Rescinded.
Rule 523.
Figure R507.2.1(1) of the code is amended to read as follows:
FIGURE
R507.2.1(1)
PLACEMENT OF LAG SCREWS AND BOLTS IN LEDGERS
R408.30523a Flashing. Rescinded.
Rule 523a.
Section R507.2.4 is added and figure R507.2.1(2) is amended to read as follows:
R507.2.4.
Flashing. An approved corrosion resistant flashing as required by Section
R703.8 shall be installed above the attached ledger as shown in figure
R507.2.1(2) or as approved.
R 408.30524 Michigan uniform energy code.
Rule 524. Buildings shall be designed and constructed in accordance with the Michigan uniform energy code part 10 rules, R 408.3100159 to R 408.3109971a.
R 408.30525a Simplified
wall bracing. Rescinded.
Rule 525a.
Section R602.10.9 is amended to read as follows:
R602.10.9.
Braced wall panel support. Braced wall panel support shall be provided as
follows:
1. Cantilevered
floor joists complying with section R502.3.3 shall be permitted to support
braced wall panels.
2. Raised floor
system post or pier foundations supporting braced wall panels shall be designed
in accordance with accepted engineering practice.
3. Masonry stem
walls with a length of 48 inches (1 219 mm) or less
supporting braced wall panels shall be reinforced in accordance with figure
R602.10.9. Masonry stem walls with a length greater than 48 inches (1 219 mm) supporting
braced wall panels shall be constructed in accordance with section R403.1.
Methods ABW and PFH shall not be permitted to attach to masonry stem walls.
4. Concrete
stem walls with a length of 48 inches (1 219 mm) or less,
greater than 12 inches (305 mm) tall shall have reinforcement sized and located
in accordance with figure R602.10.9.
R 408.30528Terms defined in other codes.Rescinded.
Rule 528. Section G2402.3 of the code is amended to read as follows:
G2402.3. Terms defined in other codes. Where terms are not defined in the code and are defined in the Michigan electrical code, R 408.30801 to R 408.30880, Michigan building code, R 408.30401 to R 408.30547, international fire code and international fuel gas code listed in chapter 44, Michigan mechanical code, R 408.30901 to R 408.30998 or Michigan plumbing code, R 408.30701 to R 408.30796, the terms shall have the meanings ascribed to them as in those codes.
R 408.30528a CSST.
Rescinded.
Rule 528a.
Section G2411.1.1 (310.1.1) of the code is amended to read as follows:
G2411.1.1.
CSST. Corrugated stainless steel tubing (CSST) gas piping systems shall be
bonded to the electrical service grounding electrode system or where provided,
lightening protection electrode system. The bonding jumper shall connect to a
metallic pipe, pipe fitting, or CSST fitting between the point of delivery and
the CSST utilizing a device listed for the application. The bonding jumper
shall be not smaller than 6 AWG copper wire or equivalent, not longer than 75
feet and accessible. Gas piping systems that are bonded in accordance with
this section shall be considered effectively bonded regardless of the amount of
CSST in the system. Any additional grounding electrodes used shall be bonded
to the electrical service grounding electrode system, or where provided, the
lighting protection grounding electrode system.
Exception: CSST
piping systems tested and listed by the manufacturer for intallation without
additional bonding when installed in accordance with the listing.
R 408.30529 Lining required.
Rule 529. Section P2709.2 of the code is amended to read as follows:
P2709.2. Lining required. The adjoining walls and floor framing enclosing on-site built-up shower receptors shall be lined with 1 of the following:
1. Sheet lead.
2. Sheet copper.
3. Plastic liner material that complies with ASTM D 4068 or ASTM D 4551.
4. Sheet-applied load-bearing, bonded waterproof membranes that comply with ANSI A118.10.
The lining
material shall extend not less than 3 inches, (76 mm millimeters), beyond or around
the rough jambs and not less than 3 inches, (76 mm millimeters), above finished
thresholds. Sheet-applied load bearing, bonded waterproof membranes shall be
applied in accordance with the manufacturer’s instructions.
R 408.30530 Requirements for discharge pipe.
Rule 530. Section P28034.6.1 of the code is amended to read as follows:
P28034.6.1. Requirements for discharge pipe. Relief valves shall not discharge so as to be a hazard, a potential cause of damage, or a nuisance.
A relief valve discharge pipe shall be provided for each individual relief valve and shall meet all of the following:
(a) Shall terminate atmospherically not more than 4 inches,(102mmmillimeters), from the floor with an unthreaded end.
(b) Shall not be interconnected.
(c) Valves shall not be connected in the relief valve discharge pipe.
(d) Shall be rigid pipe approved for water distribution, with a minimum temperature rating of 210 degrees Fahrenheit.
(e) Shall have the same nominal inside diameter as the relief valve outlet and shall drain by gravity flow.
(f) Shall discharge to the floor, or to the pan serving the water heater or storage tank, or to a waste receptor.
The outlet of a pressure, temperature, or other relief valve shall not be directly connected to the drainage system.
R 408.30532 Roof extension.
Rule 532. Section P3103.1 of the code is amended to read as follows:
P3103.1. Roof extension. All open vent pipes that extend through a roof shall terminate at least 1 foot,(305mmmillimeters), above the roof, except that if a roof is to be used for any purpose other than weather protection, then the vent extension shall be run not less than 7 feet,(2,134mmmillimeters), above the roof.
R 408.30533 Frost closure.
Rule 533. Section P3103.2 of the code is amended to read as follows:
P3103.2. Frost closure. To prevent frost closure, every vent extension through a roof shall be not less than 3 inches,(76mmmillimeters), in diameter. Any increase in the size of the vent shall be made inside the building with a minimum of 1 foot,(305mmmillimeters), below the roof or inside the wall.
R 408.30533a Rough plumbing.
Rule 533a. Section P2503.5.1 of the code is amended and P2503.8, P2503.8.1 and P2503.8.2 are added to read as follows:
P2503.5.1. Rough plumbing. DWV systems shall be tested on completion of the rough piping installation by water or air with no evidence of leakage. Either test shall be applied to the drainage system in its entirety or in sections after rough piping has been installed, as follows:
1. Water test.
Each section shall be filled with water to a point not less than 10 feet, (3, 048 mm millimeter), above the highest
fitting connection in that section, or to the highest point in the completed
system. Water shall be held in the section under test for a period of 15
minutes. The system shall prove leak free by visual inspection.
2. Air test.
The portion under test shall be maintained at a gauge pressure of 5 pounds per
square inch (psi), (34 kPa
kilopascals), or 10 inches, (254 mm
millimeters), of mercury column, (34 kPa
kilopascals). This pressure
shall be held without introduction of additional air for a period of 15
minutes.
P2503.8 Inspection and testing of backflow prevention devices. Inspection and testing of backflow prevention devices shall comply with sections P2503.8.1 and P2503.8.2.
P2503.8.1 Inspections. Inspections shall be made of backflow prevention assemblies to determine whether they are operable.
P2503.8.2 Testing. Reduced pressure principle, double check, double check detector, and pressure vacuum breaker backflow preventer assemblies shall be tested at the time of installation and immediately after repairs or relocation.
R 408.30533b Sewer depth.
Rule 533b. Section P2603.5.1 of the code is amended to read as follows:
P2603.5.1.
Sewer depth. A building sewer that connects to a private disposal system shall
be a minimum of 8 inches, (203 mm millimeters), to the top of the
pipe below finished grade at the point of septic tank connection. Building
sewers shall be installed a minimum of 42 inches, (1,067 mm millimeters), below grade.
Exception: When permitted by the code official.
R 408.30533c Pipe fittings.
Rule 533c. Section P2906.6 is added to the code to read as follows:
Pipe Fittings
MATERIAL |
STANDARD |
Acrylonitrile butadiene styrene (ABS) plastic |
ASTM D2468 |
Cast-iron |
ASME B16.4 |
Chlorinated polyvinyl chloride (CPVC) plastic |
ASSE 1061; ASTM D2846; ASTM F437; ASTM F438; ASTM F439; CSA B137.6 |
Copper or copper alloy |
ASSE 1061; ASME B16.15; ASME B16.18; ASME B16.22; ASME B16.26; ASME B16.51 |
Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE) |
ASTM F1986 |
Fittings for cross-linked polyethylene (PEX) plastic tubing |
ASSE 1061; ASTM F877; ASTM F1807; ASTM F1960; ASTM F2080; ASTM F2098; ASTM F2159; ASTM F2434; ASTM F2735; CSA B137.5 |
Gray iron and ductile iron |
AWWA C110/A21.10; AWWA C153/A21.53 |
Galvanized steel pipe |
ASTM A53 |
Malleable iron |
ASME B16.3 |
Insert fittings for Polyethylene/aluminum/polyethylene (PE-AL-PE) and cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) |
ASTM F1974; ASTM F1281; ASTM F1282; CSA B137.9; CSA B137.10 |
Polyethylene (PE) plastic |
ASTM D2609; CSA B137.1 |
Fittings for polyethylene of raised temperature (PE-RT) plastic tubing |
ASTM F1807; ASTM F2098; ASTM F2159; ASTM F2735; ASTM F2769 |
Polypropylene (PP) plastic pipe or tubing |
ASTM F2389; CSA B137.11 |
Polyvinyl chloride (PVC) plastic |
ASTM D2464; ASTM D2466; ASTM D2467; CSA B137.2; CSA B137.3 |
Stainless steel (Type 304/304L) pipe |
ASTM A312; ASTM A778 |
Stainless steel (Type 316/316L) pipe |
ASTM A312; ASTM A778 |
Steel |
ASME B16.9; ASME B16.11; ASME B16.28 |
R 408.30534 Venting.
Rule 534. Section P3105.1 is amended and section 3105.4 and figure P3105.4 are added to the code and figure N3 in appendix AN of the code is amended to read as follows:
P3105.1. Distance of trap from vent. Each fixture trap shall have a protecting vent located so that the slope and the developed length in the fixture drain from the trap weir to the vent fitting are within the requirements in table P3105.1 of the code.
P3105.4. Vertical leg for waste fixture drains. A vertical leg,(see figure P3105.4), is permitted within a fixture drain of a waste fixture in accordance with the following criteria:
(1) Minimum trap diameter shall be in accordance with table P3201.7 of the code.
(2) The diameter of section A shall be equal to the diameter of the trap.
(3) The length of section A shall not be less than 8 inches,(2,032mmmillimeters), and in accordance with table P3105.1 of the code.
(4) The diameter of section B shall be 1 pipe size larger than the diameter ofSsection A.
(5) The length of section B shall not be more than 36 inches,(9,144mmmillimeters).
(6) The diameter of section C shall be 1 pipe size larger than the diameter of section B.
(7) The total length of section A and section C shall not exceed the distance allowed in table P3105.1 of the code.
(8) Bends shall be the diameter of the largest connected section.
![](2022-016%20LR%20Construction%20Code,%20Part%205_Strike-Bold_Version_of_Final_Rule(s)_files/image009.gif)
R 408.30535 Connection.
Rule 535. Section P3111.2.2 of the code is amended to read as follows:
P3111.2.2. Connection. The combination waste and vent systems shall be provided with a dry vent connected to a point within the system or the system shall connect to a horizontal drain that is vented in accordance with one of the methods specified in this chapter. Combination waste and vent systems connecting to building drains receiving only the discharge from a stack or stacks shall be provided with a dry vent. The vent connecting the combination waste and vent pipe shall extend vertically not less than 6 inches,(152mmmillimeters), above the flood level rim of the highest fixture being vented before offsetting horizontally.
R 408.30536 Electrical; general; electrical conductors; connections and electrical grounding.
Rule 536. Sections
E3401.1, E3401.2, E3401.3, E3705.4.1, E3908.8.1, and E3908.8.2 of the
code are is amended and
E3401.5, E3401.6, E3401.6.1, E3401.6.2, E3401.6.3, E3401.7, and E3401.8 are
added to read as follows:
E3401.1. Applicability Scope. This chapter governs the electrical
components, equipment and systems used in buildings and structures covered by
this code. Electrical components, equipment and systems shall be designed and
constructed in accordance with the provisions of the Michigan electrical code,
R 408.30801 to R 408.30873.The provisions of chapters 34 to 43 of the
code shall establish the general scope of the electrical system and equipment
requirements of the code. Chapters 34 to 43 of the code cover those wiring
methods and materials most commonly encountered in the construction of 1- and
2-family dwellings and structures regulated by the code. Other wiring methods,
materials, and subject matter covered in the Michigan electrical code, R
408.30801 to R 408.30880 are also allowed by the code.
E3401.2. Scope.
Chapters 34 to 43 of the code shall cover the installation of electrical
systems, equipment, and components indoors and outdoors that are within the
scope of the code, including services, power distribution systems, fixtures,
appliances, devices, and appurtenances. Services within the scope of the code
shall be limited to 120/240 volt, 0- to 400- ampere, single-phase systems.
These chapters specifically cover the equipment, fixtures, appliances, wiring
methods, and materials that are most commonly used in the construction or alteration
of 1- and 2-family dwellings and accessory structures regulated by the code.
The omission from these chapters of any material or method of construction
provided by the Michigan electrical code, R 408.30801 to R 408.30880, shall not
be construed as prohibiting the use of such material or method of
construction. Electrical systems, equipment, or components not specifically
covered in these chapters shall comply with the applicable provisions of the
Michigan electrical code, R 408.30801 to R 408.30880.
E3401.3. Not
covered. Chapters 34 to 43 do not cover the following:
(1)
Installations under the exclusive control of communications utilities and
electric utilities.
(2) Services
over 400 amperes.
E3401.5.
General. This section provides for the design, construction, installation,
alteration, and repair of photovoltaic equipment and systems. [690.1]
E3401.6.
Requirements. The installation, inspection, maintenance, repair, and
replacement of photovoltaic systems and all system components shall comply with
the manufacturer’s instructions, Sections E3401.6.1 through E3401.6.3 and NFPA
70. [690.3]
E3401.6.1.
Roof-mounted panels and modules. Where photovoltaic panels and modules are
installed on roofs, the roof shall be constructed to support the loads imposed
by such modules. Roof-mounted photovoltaic panels and modules that serve as
roof covering shall conform to the requirements for roof coverings in chapter
9. Where mounted on or above the roof coverings, the photovoltaic panels and
modules and supporting structure shall be constructed of noncombustible
materials or fire-retardant treated wood equivalent to that required for the
roof construction.
E3401.6.2. Roof
and wall penetrations. Roof and wall penetrations shall be flashed and sealed
in accordance with chapter 9 to prevent entry of water, rodents, and insects.
E3401.6.3.
Ground-mounted panels and modules. Ground-mounted panels and modules shall be
installed in accordance with the manufacturer’s instructions. [110.3(B)]
E3401.7.
Photovoltaic panels and modules. Photovoltaic panels and modules shall be
listed and labeled in accordance with UL 1703. [690.4(B)]
E3401.8. Inverters. Inverters shall be
listed and labeled in accordance with UL 1741. Systems connected to the utility
grid shall use inverters listed for utility interaction. [690.4(B)]
E3705.4.1.
Conductors rated 60◦C. Except where the equipment is marked
otherwise, termination provisions of equipment for circuits rated 100 amperes
or less, or marked for 14 AWG through 1 AWG conductors, shall be used only for
1 of the following:
1. Conductors
rated 60◦C (140◦F).
2. Conductors
with higher temperature ratings, provided that the ampacity of such conductors
is determined based on the 60◦C (140◦F)
ampacity of the conductor size used.
3. Conductors
with higher temperature ratings where the equipment is listed and identified
for use with such conductors. [110.14(C)(1)(a)]
E3908.8.1.
Grounding of flexible metal conduit. Flexible metal conduit shall not be
permitted as an equipment grounding conductor. [Michigan Electrical Code Rules
Part 8 250.118 amended]
E3908.8.2.
Grounding of liquid-tight flexible metal conduit. Liquid-tight flexible metal
conduit shall not be permitted as an equipment grounding conductor. [Michigan
Electrical Code Rules Part 8 250.118 amended]
R 408.30536a General
requirements. Rescinded.
Rule 536a.
Sections E3402.2, E3405.2 and E3407.5 are amended to read as follows:
E3402.2.
Penetrations of fire-resistance-rated assemblies. Electrical installations in
hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be
made so that the possible spread of fire or products of combustion will not be
substantially increased. Electrical penetrations through fire-resistance-rated
walls, partitions, floors, or ceilings shall be protected by approved methods
to maintain the fire-resistance-rating of the element penetrated. Penetrations
of fire-resistance-rated walls shall be limited as specified in Section R302.4.
E3405.2.
Working clearances for energized equipment and panelboards. Except as otherwise
specified in chapters 34 through 43, the dimension of the working space in the
direction of access to panelboards and live parts likely to require
examination, adjustment, servicing, or maintenance while energized shall be not
less than 36 inches, (914 mm millimeters), in depth.
Distances shall be measured from the energized parts where such parts are
exposed or from the enclosure front or opening where such parts are enclosed.
In addition to the 36-inch dimension, (914 mm millimeters), the work space
shall not be less than 30 inches, (762 mm millimeters), wide in front of
the electrical equipment and not less than the width of such equipment. The
work space shall be clear and shall extend from the floor or platform to a
height of 6.5 feet, (1,981 mm millimeters), or the height of
the equipment, whichever is greater. In all cases, the work space shall allow
at least a 90-degree, (1.57 radians), opening of
equipment doors or hinged panels. Equipment associated with the electrical
installation located above or below the electrical equipment shall be permitted
to extend not more than 6 inches, (152 mm millimeters), beyond the front
of the electrical equipment. [110.26(A)]
Exception:
1. In existing
dwelling units, service equipment, and panelboards that are not rated in excess
of 200 amperes may be in spaces where the height of the working space is less
than 6.5 feet, (1,981 mm millimeters), but greater
than 5 feet, (1,524 mm millimeters). [110.26(A)(3)
Exception 1 amended]
2. Meters that
are installed in meter sockets may extend beyond the other equipment. Meter
sockets shall not be exempt from the requirements of this section.
[110.26(A)(3) Exception 2]
E3407.5.
Polarity of connections. No grounded conductor shall be attached to any
terminal or lead so as to reverse the designated polarity.
R 408.30537 Separate
outdoor electric space conditioning equipment. Rescinded.
Rule 537.
Section E3601.6.3, E3601.6.4, and E3608.1.2.1 are added to the code and
Sections E3604.2.1, and E3609.7.1 are amended to read as follows:
E3601.6.3.
Separate outdoor electric space conditioning equipment. A service disconnect
for separately metered outdoor electric space conditioning equipment shall be
grouped with the service disconnecting means for the structure or immediately
adjacent to the outdoor meter cabinet. A permanent plaque or directory shall
be installed at each service disconnect location denoting the other services,
feeders, and branch circuits supplying a building or structure and area served
by each service, feeder, and branch circuit. Grounding shall be in accordance
with Sections E3607 and E3608.
E3601.6.4.
Electric vehicle charging system service disconnect. A service disconnect for
electric vehicle charging systems shall be grouped with the service
disconnecting means for the structure or immediately adjacent to the outdoor
meter cabinet. A permanent plaque or directory shall be installed at each
service disconnect location identifying the other services, feeders, and branch
circuits supplying a building or structure and area served by each service,
feeder, and branch circuit. Grounding shall be in accordance with Section
E3607 and E3608.
E3604.2.1. Above
roofs. Conductors shall have a vertical clearance of not less than 8 feet, (2,438 mm millimeters), above the roof
surface. The vertical clearance above the roof level shall be maintained for a
distance of not less than 3 feet, (914 mm millimeters), in all directions
from the edge of the roof. See figure E3604.2.1. [230.24(A)]
Exceptions:
1. Conductors
above a roof surface subject to pedestrian traffic shall have a vertical
clearance from the roof surface in accordance with Section E3604.2.2.
[230.24(A) Exception 1]
2. Where the
roof has a slope of 4 inches, (102 mm millimeters), in 12 inches, (305 mm millimeters), or greater and is
not accessible from an operable window, the minimum clearance shall be 3 feet, (914 mm millimeters). [230.24(A)
Exception 2 amended]
3. The minimum
clearance above only the overhanging portion of the roof shall not be less than
18 inches, (457 mm millimeters), where not more
than 6 feet, (1,829 mm millimeters), of conductor
length passes over 4 feet, (1,219 mm millimeters), or less of roof
surface measured horizontally and such conductors are terminated at a
through-the-roof raceway or approved support. [230.24(A) Exception 3]
4. The
requirement for maintaining the vertical clearance for a distance of 3 feet, (914 mm millimeters), from the edge of
the roof shall not apply to the final conductor span where the service drop is
attached to the side of a building. [230.24(A) Exception 4]
5. Where the
voltage between conductors does not exceed 300 and the roof area is guarded or
isolated, a reduction in clearance to 3 feet, (914 mm millimeters), shall be
permitted. [230.24(A) Exception 5]
E3608.1.2.1.
Verification of the installation of the concrete encased electrode specified
for in E3608.1.2. The inspection of a concrete incased electrode meeting the
requirements of E3608.1.2 except for the connection of the grounding electrode
conductor to the electrode shall be completed by 1 of the following:
1. The
electrical inspector for the enforcing agency.
2. The building
inspector for the enforcing agency if all of the following conditions are met:
a. Both the
electrical and building inspectors for the enforcing agency(s) shall sign a
written agreement which shall remain on file with the enforcing agency that
designates authority to the building inspector for that agency to inspect a
concrete encased electrode.
b. Upon
inspection and verification by the building inspector of a concrete encased
electrode, the building inspector shall provide written documentation to the
electrical inspector that the installation of the concrete encased electrode
meets the requirements set forth in E3608.1.2. Electrode shall be ½” diameter, (13mm millimeters), reinforcing bar
or larger, a minimum of 20 feet, (6,096 mm millimeters), long including
usual tie wire connections, and encased in 2 inches, (51 mm millimeters), of concrete
except for the end of the electrode which shall be in an accessible location
and not subject to deteriorating conditions (i.e. backfill).
c. Verification
of approval of the concrete encased electrode shall be made at the construction
site by signature of the field copy of the building permit noting that the
concrete encased electrode was approved along with the footing inspection or by
a readily available inspection tag attached to the accessible grounding
electrode reinforcing bar.
d. The
grounding electrode conductor connection to the concrete encased electrode
shall be inspected by the electrical inspector for the enforcing agency.
E3609.7.1.
Corrugated stainless steel tubing (CSST). Corrugated stainless steel tubing
gas piping systems shall be bonded to the electrical service grounding
electrode system or where provided, lightening protection electrode system.
The bonding jumper shall connect to a metallic pipe, pipe fitting, or CSST
fitting between the point of delivery and the CSST utilizing a device listed
for the application. The bonding jumper shall be not smaller than 6 AWG copper
wire or equivalent, not longer than 75 feet, (22,860 millimeters), and accessible.
Gas piping systems that are bonded in accordance with this section shall be
considered effectively bonded regardless of the amount of CSST in the system.
Any additional grounding electrodes used shall be bonded to the electrical
service grounding electrode system, or where provided, the lighting protection
grounding electrode system.
Exception: CSST
piping systems tested and listed by the manufacturer for installation without
additional bonding when installed in accordance with the listing.
R 408.30537a Wiring
methods. Rescinded.
Rule 537a.
Section E3803.6 and tables E3801.4, and E3802.1 are amended to read as follows:
E3803.6.
Raceway seals. Conduits or raceways shall be sealed or plugged at either or
both ends where moisture will enter and contact live parts. Sealants shall be
identified for use with the cable insulation, shield, or other components.
Table E3801.4
ALLOWABLE
APPLICATIONS FOR WIRING METHODSa, b, c, d, e, f, g, h, i, j, k, l
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For
SI: 1 foot = 304.8 mm millimeters.
a.
Liquid-tight flexible nonmetallic conduit without integral reinforcement within
the conduit wall shall not exceed 6 feet in length.
b.
Type USE cable shall not be used inside buildings.
c.
The grounded conductor shall be insulated.
d.
Conductors shall be a type approved for wet locations and the installation
shall prevent water from entering other raceways.
e.
Shall be listed as “sunlight resistant.”
f.
Metal raceways shall be protected from corrosion and approved for the
application. Aluminum RMC requires approved supplementary corrosion
protection.
g.
RNC shall be Schedule 80.
h.
Shall be listed as “sunlight resistant” where exposed to the direct rays of the
sun.
i.
Conduit shall not exceed 6 feet in length.
j.
Liquid-tight flexible nonmetallic conduit may be encased in concrete where
listed for direct burial and only straight connectors listed for use with LFNC
are used.
k.
In wet locations under any of the following conditions.
(i)
The metallic covering is impervious to moisture.
(ii)
A lead sheath or moisture-impervious jacket is provided under the metal
covering.
(iii)
The insulated conductors under the metallic covering are listed for use in wet
locations and a corrosion-resistant jackets is provided over the metallic
sheath.
l.
Type USE cable not permitted above ground except to terminate at the exterior
of a building in an approved enclosure and protected in accordance with Section
E3803.3.
TABLE E3802.1
GENERAL
INSTALLATION AND SUPPORT REQUIREMENTS FOR WIRING METHODSa, b, c, d, e, f,
g, h, i, j, k
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For
SI: 1 inch = 25.4 mm millimeters, 1 foot = 304.8 mm millimeters, 1 degree =
0.0175 radians.
a.
Installed in accordance with listing requirements.
b.
Supports not required in accessible ceiling spaces between light fixtures where
lengths do not exceed 6 feet.
c.
Six feet for MC cable.
d.
Five feet for trade sizes greater than 1 inch.
e.
Two and one-half feet where used for service or outdoor feeder and 4.5 feet
where used for branch circuit or indoor feeder.
f.
Twenty-four inches for Type AC cable and 36 inches for interlocking Type MC
cable where flexibility is necessary.
g.
Where flexibility after installation is necessary, lengths of flexible metal
conduit and liquidtight flexible metal conduit measured from the last point
where the raceway is securely fastened shall not exceed: 36 inches for trade
sizes ½ through 1-¼, 48 inches for trade sizes 1-½ through 2 and 5
feet for trade sizes 2-½ and larger.
h.
Within 8 inches, (203 mm millimeters), of boxes without
cable clamps.
i.
Flat cables shall not be stapled on edge.
j.
Bushings and grommets shall remain in place and shall be listed for the purpose
of cable protection.
k.
See Section R502.8 and R802.7 for additional limitations on the location of
bored holes in horizontal framing members.
l.
Raceways may be unsupported where the raceway is not more than 900 millimeters
(36 inches) long and remains in unbroken lengths (without coupling). Such
raceways shall terminate in an outlet box, junction box, device box, cabinet,
or other termination at each end of the raceway.
R 408.30537b Power
and lighting distribution.Rescinded.
Rule 537b.
Sections E3901.11, E3905.3.2, E3908.9, and E3908.10, are amended and E3908.9.1,
E3908.9.1.1 and E3908.9.1.2 are added to read as follows:
E3901.11.
Foyers. Foyers that are not part of a hallway in accordance with Section
E3901.10 and that have an area that is greater than 100 feet2, (9.2903 m2
meters
squared), shall have a
receptacle(s) located in each wall space that is 3 feet, (914 mm millimeters), or more in
width. Doorways, door-side windows that extend to the floor and similar
openings shall not be considered as wall space. [210.52(I) amended]
E3905.3.2.
Securing to box. All permitted wiring methods shall be secured to the boxes.
Exception:
Where nonmetallic-sheathed cable is used with boxes not larger than a nominal
size of 2-¼ inches by 4
inches, (57 mm millimeters by 102 mm millimeters), mounted in walls
or ceilings, and where the cable is fastened within 8 inches, (2,032 mm millimeters), of the box
measured along the sheath, and where the sheath extends through a cable
knockout not less than ¼ inch, (6.4 mm millimeters), securing the
cable to the box shall not be required. Multiple cable entries shall be
permitted in a single cable knockout opening. [314.17(c) Exception amended]
E3908.9.
Equipment fastened in place or connected by permanent wiring methods.
Noncurrent-carrying metal parts of equipment, raceways, and other enclosures,
where required to be grounded, shall be grounded by 1 of the following methods:
[250.134]
(a) By any of
the equipment grounding conductors permitted by Sections E3908.8 and
E3908.8.3. [250.134(A)]
(b) By an
equipment grounding conductor contained within the same raceway, cable, or
cord, or otherwise run with the circuit conductors. Equipment grounding
conductors shall be identified in accordance with Section E3407.2. [250.134(B)
Exception]
E3908.9.1.
Cord-and-plug-connected equipment. Non-current-carrying metal parts of the
cord-and-plug-connected equipment, if grounded, shall be connected to an
equipment grounding conductor by 1 of the methods in E3908.9.1.1 and
E3908.9.1.2. [250.138]
E3908.9.1.1. By
means of an equipment grounding conductor. By means of an equipment grounding
conductor run with the power supply conductors in a cable assembly or flexible
cord properly terminated in a grounding-type attachment plug with 1 fixed
grounding contact. [250.138(A)]
Exception: The
grounding contacting pole of grounding-type plug-in ground-fault circuit
interrupters may be of the movable, self-restoring type on circuits operating
at not over 150 volts between any 2 conductors or over 150 volts between any
conductor and ground. [250.138(A) Exception]
E3908.9.1.2. By
means of a separate flexible wire or strap. By means of a separate flexible
wire or strap, insulated or bare, connected to an equipment grounding
conductor, and protected as well as practicable against physical damage, where
part of the equipment. [250.138(B)]
E3908.10.
Methods of equipment grounding. Fixtures and equipment shall be considered
grounded where mechanically connected to an equipment grounding conductor as
specified in Sections E3908.8 and E3908.8.3. Wire type equipment grounding
conductors shall be sized in accordance with Section E3908.12.
R 408.30537c Devices and luminaires.
Rescinded.
Rule 537c.
Sections E4002.2, and E4002.16, are amended to read as follows:
E4002.2.
Grounding type. Receptacles installed on 15- and 20-ampere-rated branch
circuits shall be of the grounding type and connected to an equipment grounding
conductor.
Exception:
Replacement receptacles as permitted by Section E4002.16.
E4002.16.
Replacements. Replacement of receptacles shall comply with the following as
applicable. [406.4(D) amended]
(1) Grounding-type
receptacles. Where a grounding means exists in the receptacle enclosure or an
equipment grounding conductor is installed grounding type receptacles shall be
used and shall be connected to the equipment grounding conductor. [406.4(D)(1)
amended]
(2) Non-grounding-type
receptacles. Where attachment to an equipment grounding conductor does not
exist in the receptacle enclosure, the installation shall comply with 1 of the
following: [406.4(D)(2) amended]
(a) A
non-grounding-type receptacle may be replaced with another non-grounding-type
receptacle. [406.4(D)(2)(a)]
(b) A
non-grounding-type receptacle may be replaced with a ground-fault circuit
interrupter-type of receptacle. These receptacles shall be marked “no
equipment ground.” An equipment grounding conductor shall not be connected
from the ground-fault circuit-interrupter-type receptacle to any outlet
supplied from the ground-fault circuit-interrupter receptacle.
[406.4(D)(2)(b)]
(c) A
non-grounding type receptacle may be replaced with a grounding-type receptacle
where supplied through a ground-fault circuit interrupter. Grounding-type
receptacles supplied through the ground-fault circuit interrupter shall be
marked “GFCI protected” and “no equipment ground.” An equipment grounding
conductor shall not be connected between the grounding-type receptacles.
[406.4(D)(2)(c)]
(3) Ground-fault
circuit interrupters. Ground-fault circuit-interrupter protected receptacles
shall be provided where replacements are made at receptacle outlets that are
required to be so protected elsewhere in this code. [406.4(D)(3)]
Exception:
Where replacement of the receptacle type is impracticable, such as where the
outlet box size will not permit the installation of the GFCI receptacle, the
receptacle may be replaced with a new receptacle of the existing type, where
GFCI protection is provided and the receptacle is marked “GFCI protected” and
“no equipment ground” in accordance with E4002.16 (2)(a), (b),or (c).
[406.4(D)(3) Exception]
R 408.30537d Frames
of ranges and clothes dryers. Rescinded.
Rule 537d.
Section E4101.8 of the code is added to read as follows:
E4101.8. Frames
of ranges and clothes dryers. Frames of electric ranges, wall-mounted ovens,
counter-mounted cooking units, clothes dryers, and outlet or junction boxes
that are part of the circuit for these appliances shall be connected to the
equipment grounding conductor in the manner specified in E3908.9. [250.140
amended]
Exception: For
existing branch-circuit installations only where an equipment grounding
conductor is not present in the outlet or junction box, the frames of electric
ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, and
outlet or junction boxes that are part of the circuit for these appliances may
be connected to the grounded circuit conductor if all of the following
conditions are met: [250.140 Exception]
1. The supply
circuit is 120/240-volt single-phase, 3-wire connected system. [250.140
Exception (1)]
2. The grounded
conductor is not smaller than 10 AWG copper or 8 AWG aluminum. [250.140
Exception (2)]
3. The grounded
conductor is insulated, or the grounded conductor is uninsulated and part of a
type SE service-entrance cable and the branch circuit originates at the service
equipment. [250.140 Exception (3)]
4. Grounding
contacts of the receptacles furnished as part of the equipment are bonded to
the equipment. [250.140 Exception (4)]
R 408.30538Combustible insulation.Rescinded.
Rule 538. Section 302.13 of the code is amended to read as follows:
302.13. Combustible insulation. Combustible insulation shall be separated a minimum of 3 inches (76 mm) from recessed lighting fixtures, fan motors, and other heat-producing devices.
Exception: When heat-producing devices are listed for lesser clearances, combustible insulation complying with the listing requirements shall be separated in accordance with the conditions stipulated in the listing.
Recessed lighting fixtures installed in the building thermal envelope shall be installed in accordance with the manufacturer's installation instructions.
R 408.30539a Automatic fire sprinkler systems.
Rule 539a. Sections R313.1, R313.2, P2902.5.4 and P2904.1 of the code are amended to read as follows:
R313.1.Design and installation.Where installed, automatic residential fire sprinkler systems shall conform to the design and installation requirements of the national fire protection association (NFPA) standard 13D or P2904.1.Townhouse automatic fire sprinkler systems. An automatic sprinkler system may be installed in townhouses.
Exception: an automatic sprinkler system may not be required where additions or alternations are made to existing townhouses that do not have an automatic sprinkler system installed.
R313.2. One-and two-family dwellings automatic sprinkler system. An automatic sprinkler system may be installed in one-and two-family dwellings.
Exception: An automatic sprinkler system may not be required for additions or alterations to existing buildings that are not already provided with a sprinkler system.
P2902.5.4. Connections to automatic fire sprinkler systems. The potable water supply to automatic fire sprinkler systems shall be protected against backflow by a double check-valve assembly or a reduced pressure principle backflow preventer.
Exception: Isolation of the water distribution system is not required for deluge, preaction, or dry pipe system.
P2904.1. General. Where installed, residential fire sprinkler systems, or portions thereof, shall be in accordance with NFPA 13D.
R 408.30540Elevators and platform lifts.Rescinded
Rule 540. Sections R321.1, R321.2, and R321.3 of the code are amended to read as follows:
R321.1. Elevators. Where provided, passenger elevators, limited-use/limited-application elevators or private residence elevators shall comply with the Michigan elevator rules R 408.7001 to R 408.8695.
R321.2. Platform lifts. Where provided, platform lifts shall comply with the Michigan elevator rules R 408.7001 to R 408.8695.
R321.3. Accessibility. Elevators or platform lifts that are part of an accessible route required by chapter 11 of the Michigan building code, shall comply with ICC A117.1, as listed in chapter 44, and 1966 PA 1, MCL125.1354 to MCL 125.1356.
R 408.30541a Duct
Iinstallation.
Rule 541a. Section M1502.4.2 of the code is amended to read as follows:
M1502.4.2. Duct Iinstallation.
Dryer exhaust ducts shall be supported at 4 foot, (1,219 mm millimeters), intervals and
secured in place. The insert end of the duct shall extend into the adjoining
duct or fitting in the direction of airflow. Ducts shall not be joined with
screws or similar fasteners that protrude into the inside of the duct.
R 408.30542 Floor
register location. Rescinded.
Rule 542.
Section M1601.4.10 is added to the code to read as follows:
M1601.4.10.
Floor register location. Floor registers located in room or spaces containing
water closets shall be located a minimum of 3 feet (914 mm) from the water
closet.
R 408.30544 Light, ventilation, and heating.
Rule 544. Section R303.5.2 of the code is amended to read as follows:
R303.5.2. Exhaust openings. Outside exhaust openings shall be located as not to create a nuisance. Exhaust openings shall not be directed onto walkways. Exhaust openings shall not terminate within 3 feet, 914.4 millimeters, of a ventilated section in a soffit.
R 408.30544aTownhouses.Rescinded.
Rule 544a. Section R302.2 of the code is amended to read as follows:
R302.2. Townhouses. Each townhouse shall be considered a separate building and shall be separated b A 2-hour fire-resistance-rated wall assembly tested in accordance with ASTME E 119 or UL 263 with exposure from both sides.
Exception: Where the building is provided with an automatic fire sprinkler system installed in accordance with NFPA 13D or P2904.1, a common 1-hour fire-resistance-rated wall assembly tested in accordance with ASTM E 119 or UL 263, as listed in chapter 44, is permitted for townhouses if such walls do not contain plumbing or mechanical equipment, ducts, or vents in the cavity of the common wall. The wall shall be rated for fire exposure from both sides and shall extend to and be tight against exterior walls and the underside of the roof sheathing. Electrical installations shall be installed in accordance with chapters 34 to 43. Penetrations of electrical outlet boxes shall be in accordance with section R302.4.
R 408.30544b Exterior walls.
Rule 544b. Section R302.5.1 of the code is amended and table R302.1(1) is added to read as follows:
R302.5.1.
Opening protection. Openings from a private garage directly into a room used
for sleeping purposes shall not be permitted. Other openings between the
garage and residence shall be equipped with solid wood doors not less than 1-3/8 inches, (35 mm millimeters), in thickness,
solid or honeycomb-core steel doors not less than 1-3/8 inches, (35 mm
millimeters), thick, or
20-minute fire-rated doors.
TABLE R302.1(1)
EXTERIOR WALLS
EXTERIOR WALL ELEMENT |
MINIMUM FIRE-RESISTANCE RATING |
MINIMUM FIRE SEPARATION DISTANCE |
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Walls |
Fire-resistance rated |
1 hour-tested in accordance with ASTM E 119 or UL 263 with exposure from both sides |
< 5 feet
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Not fire-resistance rated |
0 hours |
≥ 5 feet |
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Projections |
Not alloweda |
NA |
< 2 feet |
Fire-resistance rated |
1 hour on the underside |
≥ 2 feet to < 5 feet |
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Not fire-resistance rated |
0 hours |
≥ 5 feet |
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Opening in walls |
Not allowed |
N/A |
< 3 feet |
25% maximum of wall area |
0 hours |
3 feet |
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Unlimited |
0 hours |
5 feet |
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Penetrations |
All |
Comply with |
< 5 feet |
None required |
5 feet |
For SI: 1
foot = 304.8 mm millimeters.
N/A = Not applicable
a. except as allowed as per Ssection R302.1 exceptions 3 and 4
R
408.30545 Masonry veneer wall covering.Rescinded.
Rule 545. Figures R703.8, R703.8.2.1, and R703.8.2.2, of the code are amended
to read as follows:
R 408.30545a Masonry
heater clearance. Rescinded.
Rule 545a.
Section R1002.5 of the code is amended to read as follows:
R1002.5.
Masonry heater clearance. Combustible materials shall not be placed within 36
inches (914 mm) of the outside surface of a masonry heater unless installed in
accordance with NFPA 211, and the required space between the heater and
combustible material shall be fully vented to permit the free flow of air
around all heater surfaces.
Exceptions:
1. When the
masonry heater wall is at least 8 inches (203 mm) thick of solid masonry and
the wall of the heat exchange channels is at least 5 inches (127 mm) thick of
solid masonry, combustible materials shall not be placed within 4 inches (102
mm) of the outside surface of a masonry heater. A clearance of at least 8
inches (203 mm) shall be provided between the gas-tight capping slab of the
heater and a combustible ceiling.
2. Masonry
heaters listed and labeled in accordance with UL 1482 may be installed in
accordance with the listing specifications and the manufacturer’s written
instructions.
R
408.30547b Chimneys. Rescinded.
R547b. Sections R1003.9.1, R1005.4, Figure R1001.1, are amended and Figures
R1003.9.1(1) and R1003.9.1(2) are added to read as follows:
R1003.9.1. Chimney caps. Masonry chimneys shall have a concrete, metal, or
stone cap sloped a minimum of 10 degrees to shed water, a drip edge or slot and
shall be flashed in accordance with figure R1003.9.1(1). The joint space
between the flue liner and the cap shall be filled with compressible filler and
caulked with a suitable sealant to allow for expansion and contraction of the
materials. All vertical joints in a chimney cap shall be caulked with a
suitable sealant.
The cap shall be a minimum of 2” (51 mm) thick at the outer edge and overhang
the outer wall of the chimney by a minimum of 2” (51 mm). The drip slot shall
be located not less than 1-1/2” (38 mm) from the outer surface of the chimney.
A bond break shall be installed between the concrete cap and the chimney
masonry.
Metal caps shall lap down the chimney wall a minimum of 4” (102 mm) and be
sealed with a suitable sealant.
Joint sealants shall meet ASTM C 920, type S or M, grade NS, class 25 and be
installed in accordance with the manufacturer’s installation instructions.
R1005.4. Factory-built chimneys. Chimneys for use with factory-built fireplaces
shall comply with the requirements of UL 127. The metal chase cover shall be
sloped a minimum of 10◦ to shed water. Metal chase cover
shall lap down the chimney wall a minimum of 4” (102 mm) and be sealed with a
suitable sealant. Exterior wall claddings shall be applied and flashed in
accordance with Section R703 and manufacturer’s installation instructions.
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
Figure R1001.1
Fireplace and Chimney Details
R 408.30547c
General. Rescinded.
Rule 547c. Sections N1101.3.1, N1101.7, N1101.10, N1101.12.3, N1101.16, tables
N1101.10, and N1101.10.2(2) are amended and figure N1101.10a of the code is
added to read as follows:
N1101.3.1 (R101.4.3). Additions, alterations, renovations, or repairs.
Additions, alterations, renovations, or repairs to an existing building,
building system, or portion thereof shall conform to the provisions of this
code as they relate to new construction without requiring the unaltered portion(s)
of the existing building or building system to comply with this code.
Additions, alterations, renovations, or repairs shall not create an unsafe or
hazardous condition or overload existing building systems. An addition shall
be deemed to comply with this code if the addition alone complies or if the
existing building and addition comply with this code as a single building.
Exception: The following are exempt provided the energy use of the building is
not increased:
1. Storm windows installed over existing fenestration.
2. Glass only replacements in an existing sash and frame.
3. Existing ceiling, wall, or floor cavities exposed during construction
provided that these cavities are filled with insulation.
4. Construction where the existing roof, wall, or floor cavity is not exposed.
5. Reroofing where the roof is part of the thermal envelope, and where neither
the roof sheathing nor the roof insulation is exposed.
6. Reroofing where the roof is not part of the thermal envelope.
7. Replacement
of existing doors that separate conditioned space from the exterior shall not
require the installation of a vestibule or revolving door, provided, however,
that an existing vestibule that separates a conditioned space from the exterior
shall not be removed.
8. Alterations
that replace less than 50% of the luminaries in a space, provided that such
alterations do not increase the installed interior lighting power.
9. Alterations
that replace only the bulb and ballast within the existing luminaries in a
space provided that the alteration does not increase the installed interior
lighting power.
N1101.7
(R102.1.1). Above code programs. The state construction code commission may
evaluate and approve a national, state, or local energy efficiency program to
exceed the energy efficiency required by this code. Buildings approved in
writing by such an energy efficiency program, such as ICC 700-2012 “silver” or
energy star version 3 (rev. 07), shall be considered in compliance with this
code. The requirements identified as “mandatory” in chapter 4 shall be met.
N1101.10
(R301.1). Climate zones. Climate zones from figures 301.1, 301.1a or table
301.1 shall be used in determining the applicable requirements of this code.
N1101.12.3. Fenestration product rating. U-factors of fenestration products
(windows, doors, and skylights) shall be determined in accordance with NFRC 100
by an accredited, independent laboratory, and labeled and certified by the
manufacturer. Products lacking such a labeled U-factor shall be assigned a
default U-factor from table N1101.12.3(1) or N1101.12.3(2).
Exception: Computer simulations by independent NFRC certified laboratories or
approval under section 21 of 1972 PA 230, MCL 125.1521 is considered in
compliance with this section.
N1101.16
(R401.3). Certificate (mandatory). A permanent certificate shall be posted on
or in the electrical distribution panel, and shall meet all of the following:
(a) Be affixed
or attached so it does not cover or obstruct the visibility of the circuit
directory label, service disconnect label, or other required labels.
(b) Be
completed by the builder or registered design professional.
(c) List the
predominant R-values of insulation installed in or on ceiling/roof,
walls, foundation (slab, basement wall, crawlspace wall and/or floor) and ducts
outside conditioned spaces and U-factors for fenestration. If there is more
than 1 value for each component, then the certificate shall list the value
covering the largest area.
(d) List the
types and efficiencies of heating, cooling, and service water heating
equipment.
(e) If a
gas-fired unvented room heater, electric furnace, or baseboard electric heater
is installed in the residence, then the certificate shall list “gas-fired
unvented room heater,” as appropriate. An efficiency shall not be listed for
gas-fired unvented room heaters, electric furnaces, or electric baseboard
heaters.
Table N1101.10
Climate Zones by County
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Key: A
– Moist. Absence of moisture designation indicates moisture regime is
irrelevant.
Table N1101.10.2(2)
Climate Zone Definitions
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R 408.30547d Building thermal envelope.
Rule 547d. Sections
N1102.2.6, N1102.2.12, N1102.3.3, N1102.3.6, N1102.4,
N1102.4.1.1, N1102.4.1.2, N1102.4.2, N1102.4.3, N1102.4.4, tables N1102.1.1,
N1102.1.3, and N1102.4.1.1 of the code are amended to read as follows:
Section
N1102.4.6 of this code is amended to read as follows:
N1102.2.6 (R402.2.6). Steel-frame
ceilings, walls, and floors. Steel-frame ceilings, walls, and floors shall
meet the insulation requirements of table N1102.2.6 or shall meet the U-factor
requirements in table N1102.1.3. The calculation of the U-factor for a
steel-frame envelope assembly shall use a series-parallel path calculation
method.
N1 102.2.12
Thermally isolated sunroom insulation. The minimum ceiling insulation R-values
shall be R-24 in zones 5 to 7. The minimum wall R-value shall be R-13 in all
zones. New wall or walls separating a sunroom from conditioned space shall
meet the building thermal envelope requirements.
N1102.3.3
(R402.3.3). Glazed fenestration exemption. Up to 15 square feet (1.4m2)
of glazed fenestration per dwelling unit may be exempt from U-factor
requirements in section N1102.1.1. This exemption shall not apply to the
U-factor alternative approach in section N1102.1.1 and the total UA alternative
in section N1102.1.4.
N1102.3.6
(R402.3.6). Replacement fenestration. Where some or all of an existing
fenestration unit is replaced with a new fenestration product, including sash
and glazing, the replacement fenestration unit shall meet the applicable
requirements for U-factor in table N1102.1.3. Where some or all of an existing
fenestration unit is replaced with a new fenestration product, including sash
and glazing, the replacement fenestration unit shall meet the applicable
requirements for U-factor in table N1102.1.1.
N1102.4 (R402.4). Air leakage. The building thermal envelope shall be
constructed to limit air leakage in accordance with the requirements of
sections N1102.4.1 through N1102.4.4.
N1102.4.1 (R402.4.1). Building thermal envelope. The building thermal
envelope shall comply with sections N1102.4.1.1 and N1102.4.1.2.
N1102.4.1.1 (R402.4.1.1). Installation (mandatory). The components of the
building thermal envelope as listed in table N1102.4.1.1 shall be installed in
accordance with the manufacturer’s instructions and the criteria listed in
table N1102.4.1.1, as applicable to the method of construction. The sealing
methods between dissimilar materials shall allow for differential expansion and
contraction.
N1102.4.1.2 (R402.4.1.2). Testing (prescriptive). The building or dwelling
unit shall be tested and verified as having an air leakage rate of not
exceeding 4 air changes per hour. Testing shall be conducted with a blower
door at a pressure of 0.2” w.g. (50 pascals). Where required by the code
official, testing shall be conducted by a certified independent third party.
Certification programs shall be approved by the state construction code
commission. A written report of the results of the test shall be signed by the
party conducting the test and provided to the code official. Testing shall be
performed at any time after creation of all penetrations of the building
thermal envelope.
During
testing all of the following apply:
1. Exterior windows and doors, fireplace, and stove doors shall be closed, but
not sealed, beyond the intended weather stripping or other infiltration control
measures.
2. Dampers including exhaust, intake, makeup air, backdraft, and flue dampers
shall be closed, but not sealed beyond intended infiltration control measures.
3. Interior doors, if installed at the time of the test, shall be open.
4. Exterior doors for continuous ventilation systems and heat recovery
ventilators shall be closed and sealed.
5. Heating and cooling systems, if installed at the time of the test, shall be
turned off.
6. Supply and return registers, if installed at the time of the test, shall be
fully open.
N1102.4.2 (R402.4.2). Fireplaces (mandatory). New wood-burning masonry
fireplaces shall have tight-fitting flue dampers and outdoor combustion air.
N1102.4.3 (R402.4.3). Fenestration air leakage (mandatory). Windows,
skylights, and sliding glass doors shall have an air infiltration rate of no
more than 0.3 cfm per square foot (1.5 L/s/m2), and swinging doors
no more than 0.5 cfm per square foot (2.6 L/s/m2), when tested
according to NFRC 400 or AAMA/WDMA/CSA 101/I.S.2/A440 by an accredited,
independent laboratory and listed and labeled by the manufacturer.
Exception: Site-built windows, skylights, and doors.
N1102.4.4 (R402.4.4). Recessed lighting (mandatory). Recessed luminaires
installed in the building thermal envelope shall be sealed to limit air leakage
between conditioned and unconditioned spaces. All recessed luminaires shall be
IC-rated and labeled as having an air leakage rate not more than 2.0 cfm (0.944
L/s) when tested in accordance with ASTM E 283 at a 1.57 psf (75 Pa) pressure differential.
All recessed luminaires shall be sealed with a gasket or caulk between the
housing and the interior wall or ceiling covering.
N1102.4.6 Electrical and communication outlet boxes (air-sealed boxes). Electrical and communication outlet boxes installed in the building thermal envelope shall be sealed to limit air leakage between conditioned and unconditioned spaces.
TABLE N1102.1.1 (R402.1.1)
INSULATION AND FENESTRATION
REQUIREMENTS BY COMPONENTa
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a. R-values are minimums. U-factors are maximums.
When insulation is installed in a cavity which is less than the label or design
thickness of the insulation, the installed R-value of the insulation shall not
be less than the R-values specified in the table.
b. The fenestration U-factor column excludes
skylights.
c. “15/19” means R-15 continuous insulation on the
interior or exterior of the home or R-19 cavity insulation at the interior of
the basement wall. “15/19” may be met with R-13 cavity insulation on the
interior of the basement wall plus R-5 continuous insulation on the interior or
exterior of the home. “10/13” means R-10 continuous insulation on the interior
or exterior of the home or R-13 cavity insulation at the interior of the
basement wall.
d. R-5 shall be added to the required slab edge
R-values for heated slabs.
e. Or insulation sufficient to fill the framing
cavity, R-19 minimum.
f. First value is cavity insulation, second is
continuous insulation or insulated siding, so “13 + 5” means R-13 cavity
insulation plus R-5 continuous insulation or insulated siding. If structural
sheathing covers 40% or less of the exterior, continuous insulation R-value may
be reduced by no more than R-3 in the locations where structural sheathing is
used – to maintain a consistent total sheathing thickness.
g. The second R-value applies when more than 1/2 the
insulation is on the interior of the mass wall.
TABLE N1102.1.3 (R402.1.3)
EQUIVALENT U-FACTORSa
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a. Nonfenestration U-factors shall be obtained from
measurement, calculation, or an approved source.
b. When more than half the insulation is on the
interior, the mass wall U-factors shall be a maximum of 0.065 in zone 5 and
marine 4, and 0.057 in zones 6 and 7.
TABLE N1102.4.1.1 (R402.4.1.1)
AIR BARRIER AND INSULATION
INSTALLATION
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a. In addition, inspection of log walls shall be in
accordance with the provisions of ICC-400.
R
408.30547e Simulated performance alternative. Rescinded.
Rule 547e. Table N1105.5.2(1) [R405.5.2(1)] of the
code is amended to read as follows:
TABLE N1105.5.2(1) [R405.5.2(1)]
SPECIFICATIONS FOR THE STANDARD
REFERENCE AND PROPOSED DESIGNS
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For SI: 1 square foot = 0.93 m2, 1 British
thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m2, 1
gallon (U.S.) = 3.785 L,
◦C = (◦F-3)/1.8,
1 degree = 0.79 rad, 1 inch water gauge = 1250 Pa.
a. Glazing shall be defined as sunlight-transmitting
fenestration, including the area of sash, curbing, or other framing elements,
that enclose conditioned space. Glazing includes the area of
sunlight-transmitting fenestration assemblies in walls bounding conditioned
basements. For doors where the sunlight-transmitting opening is less than 50%
of the door area, the glazing area is the sunlight transmitting opening area.
For all other doors, the glazing area is the rough frame opening area for the
door including the door and the frame.
b. For residences with conditioned basements, R-2 and
R-4 residences and townhouses, the following formula shall be used to determine
glazing area:
AF = As x FA x F
where:
AF = Total glazing area.
As = Standard reference design total
glazing area.
FA = (Above-grade thermal boundary gross wall area)/(above-grade
boundary wall area + 0.5 x below-grade boundary wall area).
F = (Above-grade thermal boundary wall
area)/(above-grade thermal boundary wall area + common wall area) or 0.56,
whichever is greater.
and where:
Thermal boundary wall is any wall that separates
conditioned space from unconditioned space from unconditioned space or ambient
conditions.
Above-grade thermal boundary wall is any thermal
boundary wall component not in contact with soil.
Below-grade boundary wall is any thermal boundary wall
in soil contact.
Common wall area is the area of walls shared with an
adjoining dwelling unit.
L and CFA are in the same units.
c. Where required by the code official, testing shall
be conducted by a certified independent third party. Hourly calculations as
specified in the ASHRAE handbook of fundamentals, or the equivalent shall be
used to determine the energy loads resulting from infiltration.
d. The combined air exchange rate for infiltration
and mechanical ventilation shall be determined in accordance with equation 43
of 2001 ASHRAE handbook of fundamentals, page 26.24 and the “whole-house
ventilation” provisions of 2001 ASHRAE handbook of fundamentals, page 26.19 for
intermittent mechanical ventilation.
e. Thermal storage element shall mean a component not
part of the floors, walls, or ceilings that is part of a passive solar system,
and that provides thermal storage such as enclosed water columns, rock beds, or
phase-change containers. A thermal storage element must be in the same room as
fenestration that faces within 15 degrees (0.26 rad) of true south, or must be
connected to such a room with pipes or ducts that allow the element to be
actively charged.
f. For a proposed design with multiple heating,
cooling, or water heating systems using different fuel types, the applicable
standard reference design system capacities and fuel types shall be weighted in
accordance with their respective loads as calculated by accepted engineering
practice for each equipment and fuel type present.
g. For a proposed design without a proposed heating
system, a heating system with the prevailing federal minimum efficiency shall
be assumed for both the standard reference and proposed design.
h. For a proposed design home without a proposed
cooling system, an electric air conditioner with the prevailing federal minimum
efficiency shall be assumed for both the standard reference design and the
proposed design.
i. For a proposed design with a non-storage-type
water heater, a 40-gallon storage-type water heater with the prevailing federal
minimum energy factor for the same fuel as the predominant heating fuel type
shall be assumed. For the case of a proposed design without a proposed water
heater, a 40-gallon storage-type water heater with the prevailing federal
minimum efficiency for the same fuel as the predominant heating fuel type shall
be assumed for both the proposed design and standard reference design.
R 408.30547f Systems.
Rescinded.
Rule 547e.
Sections N1103.2.1, N1103.2.2, and N1103.4.2 of the code are amended to read as
follows:
N1103.2.1.
Insulation (prescriptive). All portions of the air distribution system shall be
installed in accordance with Section M1601 and be insulated to an installed R-6
when system components are located within the building but outside the
conditioned space, and R-8 when located outside to the building thermal
envelope. When located within a building envelope assembly, at least R-8 shall
be applied between the duct and that portion of the assembly farthest from
conditioned space.
Exception:
Portions of the air distribution system within appliances or equipment.
N1103.2.2.
Sealing (mandatory). Ducts, air handlers, and filter boxes shall be sealed.
Joints and seams shall comply with either the international mechanical code or
international residential code, as applicable.
Exceptions:
1.
Air-impermeable spray foam products may be applied without additional joint
seals.
2. Where a duct
connection is made that is partially inaccessible, 3 screws or rivets shall be
equally spaced on the exposed portion of the joint so as to prevent a hinge
effect.
3. Continuously
welded and locking-type longitudinal joints and seams in ducts operating at
static pressures less than 2 inches (51 mm) of water column (500 Pa) pressure
classification shall not require additional closure systems.
Duct tightness
shall be verified by either of the following:
1.
Postconstruction test: Total leakage to the outside of a conditioned space or
total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 square
feet (9.29 m2) of conditioned floor area when tested at a pressure
differential of 0.1 inches (2.54 mm) w. g. (25 Pa) across the entire system,
including the manufacturer’s air handler enclosure. All register boots shall
be taped or otherwise sealed during the test.
2. Rough-in
test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100
square feet (9.29 m2) of conditioned floor area when tested at a
pressure differential of 0.1 inches (2.54 mm) w.g. (25 Pa) across the system,
including the manufacturer’s air handler enclosure. All registers shall be
taped or otherwise sealed during the test. If the air handler is not installed
at the time of the test, total leakage shall be less than or equal to 3 cfm (85
L/min) per 100 square feet (9.29 m2) of conditioned floor area.
Exception: The
total leakage test is not required for ducts and air handlers located entirely
within the building thermal envelope.
N1103.4.2. Hot
water pipe insulation (prescriptive). Insulation for hot water pipe with a
minimum thermal resistance (R-value) of R-3 shall be applied to the following:
1. Piping
larger than 3/4 inch nominal diameter.
2. Piping
serving more than 1 dwelling unit.
3. Piping
located outside the conditioned space.
4. Piping from
the water heater to a distribution manifold.
5. Piping
located under a floor slab.
6. Buried
piping.
7. Supply and
return piping in recirculation systems other than demand recirculation systems.
R 408.30547g Energy
rating index compliance alternative. Rescinded.
Rule
547f. Sections N1106.1, N1106.2, N1106.3, N1106.3.1, N1106.4, N1106.5,
N1106.6, N1106.6.1, N1106.6.2, N1106.6.3, N1106.7, N1106.7.1, N1106.7.2,
N1106.7.3, and table N1106.4 of the code are added to read as follows:
N1106.1 (R406.1). Scope. This section establishes criteria for compliance using
an energy rating index (ERI) analysis.
N1106.2 (R406.2). Mandatory requirements. Compliance with this section requires
that the mandatory provisions identified in sections N1101.2 and N1103.4.2 be
met. The building thermal envelope shall be greater than or equal to levels of
efficiency and solar heat gain coefficient in table 402.1.2 or 402.1.4 of the
2009 international energy conservation code.
Exception: Supply and return ducts not completely inside the building thermal
envelope shall be insulated to a minimum of R-6.
N1106.3 (R406.3). Energy rating index. The energy rating index (ERI) shall be
a numerical integer value that is based on a linear scale constructed such that
the ERI reference design has an index value of 100 and a residential building
that uses no net purchased energy has an index value of 0. Each integer value
on the scale shall represent a 1% change in the total energy use of the rated
design relative to the total energy use of the ERI reference design. The ERI
shall consider all energy used in the residential building.
N1106.3.1 (R406.3.1). ERI reference design. The ERI reference design shall be
configured such that it meets the minimum requirements of the 2006
international energy conservation code prescriptive requirements.
The proposed residential building shall be shown to have an annual total
normalizedmodified load less than or equal to the annual total loads of the ERI
reference design.
N1106.4 (R406.4). ERI-based compliance. Compliance based on an ERI analysis
requires that the rated design be shown to have an ERI less than or equal to
the appropriate value listed in table N1106.4 when compared to the ERI
reference design.
N1106.5 (R406.5). Verification by approved agency. Verification of compliance
with section N1106 shall be completed by an approved third party.
N1106.6 (R406.6). Documentation. Documentation of the software used to
determine the ERI and the parameters for the residential building shall be in
accordance with sections N1106.6.1 through N1106.6.3.
N1106.6.1 (R406.6.1). Compliance software tools. Documentation verifying that
the methods and accuracy of the compliance software tools conform to the
provisions of this section shall be provided to the code official.
N1106.6.2 (R406.6.2). Compliance report. Compliance software tools shall
generate a report that documents that the ERI of the rated design complies with
sections N1106.3 and N1106.4. The compliance documentation shall include all
of the following information:
1. Address or
other identification of the residential building.
2. An
inspection checklist documenting the building component characteristics of the
rated design. The inspection checklist shall show results for both the ERI
reference design and the rated design, and shall document all inputs entered by
the user necessary to reproduce the results.
3. Name of
individual completing the compliance report.
4. Name and
version of the compliance software tool.
Exception: Multiple orientations. Where an otherwise identical building model
is offered in multiple orientations, compliance for any orientation shall be
permitted by documenting that the building meets the performance requirements
in each of the 4 (north, east, south and west) cardinal orientations.
N1106.6.3 (R406.6.3). Additional documentation. The code official may require
the following documents:
1.
Documentation of the building component characteristics of the ERI reference
design.
2. A certification signed by the builder providing the building component
characteristics of the rated design.
3.
Documentation of the actual values used in the software calculations for the
rated design.
N1106.7 (R406.7). Calculation software tools. Calculation software, where
used, shall be in accordance with sections N1106.7.1 through N1106.7.3.
N1106.7.1 (R406.7.1). Minimum capabilities. Calculation procedures used to
comply with this section shall be software tools capable of calculating the ERI
as described in section N1106.3, and shall include the following capabilities:
1. Computer generation of the ERI reference design using only the input for
the rated design.
The calculation procedure shall not allow the user to directly modify the
building component characteristics of the ERI reference design.
2. Calculation of whole-building, as single zone, sizing for the heating and
cooling equipment in the ERI reference design residence in accordance with
section N1103.7.
3. Calculations that account for the effects of indoor and outdoor
temperatures and part-load ratios on the performance of heating, ventilating,
and air-conditioning equipment based on climate and equipment sizing.
4. Printed code official inspection checklist listing each of the rated design
component characteristics determined by the analysis to provide compliance,
along with their respective performance ratings.
N1106.7.2 (R406.7.2). Specific approval. Performance analysis tools meeting
the applicable sections of section N1106 shall be approved. Tools are
permitted to be approved based on meeting a specified threshold for a
jurisdiction. The code official shall approve tools for a specified
application or limited scope.
N1106.7 (R406.7.3). Input values. When calculations require input values not
specified by sections N1102, N1103, N1104, and N1105, those input values shall
be taken from an approved source.
Table N1106.4 (R406.4)
Maximum Energy Rating Index
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