Attic Fau Framing Detail

Fau unit shall be doubled with a minimum 2x6 joists. 30 inches high 762 mm 22 inches wide 559 mm 20 feet max length 6096 mm measured along the center line between the attic access opening and the attic furnace. 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.

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Chapter 7 or note special.

Attic fau framing detail.

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. 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. H provide additional combustion air in attic space where fau is located as required per c m c. Cmc chapter 9 attic furnace diagram.

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. Attic access may be reduced to 22 x 30 provided the largest piece of equipment can be removed through the opening. Install passageway platform minimum 24 inches width and maximum 20 feet in length to fau.

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. 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.