Attic Fau Framing Detail
Fau unit shall be doubled with a minimum 2x6 joists.
Attic fau framing detail. Chapter 7 or note special. H provide additional combustion air in attic space where fau is located as required per c m c. Additionally if the attic and roof is conventionally framed ceiling joist under the location of the fau unit shall be doubled with a minimum 2x6 joists. Install passageway platform minimum 24 inches width and maximum 20 feet in length to fau.
If the attic and roof framing is a pre fabricated engineered truss system an engineering report wet stamped and signed by a licensed engineer shall be submitted for review and approval prior to issuance of a building permit. An attic in which a fau is installed shall be accessible by an opening and passageway 30 x 30 in size. Attic furnace passageway minimum dimensions requirements. If the attic and roof framing is a pre fabricated engineered truss system an engineering report wet stamped and signed by a licensed engineer shall be submitted for review and approval prior to issuance of a building permit.
Attic access may be reduced to 22 x 30 provided the largest piece of equipment can be removed through the opening. If the attic and roof framing is a prefabricated engineered truss system an engineering report wet stamped and signed by a licensed engineer shall be submitted for review and approval prior to issuance of a building permit.