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// CODE SNIPPET

AE502.6 Under-Floor Clearances-Ventilation and Access

2015 Michigan Residential Code > E Manufactured Housing Used as Dwellings > AE502 Foundation Systems > AE502.6 Under-Floor Clearances-Ventilation and Access
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A minimum clearance of 12 inches (305 mm) shall be maintained beneath the lowest member of the floor support framing system. Clearances from the bottom of wood floor joists or perimeter joists shall be as specified in this code.

     Under-floor spaces shall be ventilated with openings as specified in this code. If combustion air for one or more heat-producing appliance is taken from within the under-floor spaces, ventilation shall be adequate for proper appliance operation.

     Under-floor access openings shall be provided. Such openings shall be not less than 18 inches (457 mm) in any dimension and not less than 3 square feet (0.279 m2) in area, and shall be located so that any water supply and sewer drain connections located under the manufactured home are accessible.

Related Code Sections


AE502.6 Manufactured Housing Used as Dwellings, Under-Floor Clearances-Ventilation and Access
, ventilation shall be adequate for proper appliance operation.      Under-floor access openings shall be provided. Such ...
2015 Michigan Residential Code > E Manufactured Housing Used as Dwellings > AE502 Foundation Systems > AE502.6 Under-Floor Clearances-Ventilation and Access
M1305.1.4.1 General Mechanical System Requirements, Ground Clearance
Appliances suspended from the floor shall have a clearance of not less than 6 inches (152 mm) from the ground ...
2015 Michigan Residential Code > 13 General Mechanical System Requirements > M1305 Appliance Access > M1305.1 Appliance Access for Inspection Service, Repair and Replacement > M1305.1.4 Appliances Under Floors > M1305.1.4.1 Ground Clearance
R408.1 Foundations, Ventilation
1,500 square feet (140 m 2 ) of under-floor space area. One such ventilating opening shall be within 3 feet (914 mm) of each corner of the building ...
2015 Michigan Residential Code > 4 Foundations > R408 Under-Floor Space > R408.1 Ventilation
910.4 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment, Clearance
The lowest portion of the floor furnace shall have not less than a 6-inch (152 mm) clearance from the grade level; except where the lower 6-inch (152 ...
2015 Michigan Mechanical Code > 9 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment > 910 Floor Furnaces > 910.4 Clearance
1203.4 Interior Environment, Under-Floor Ventilation
The space between the bottom of the floor joists and the earth under any building except spaces occupied by basements or cellars shall be provided ...
2015 Michigan Building Code > 12 Interior Environment > 1203 Ventilation > 1203.4 Under-Floor Ventilation
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