1 Hour Fire Rated Roof Overhang

A b 2 feet to 5 feet not fire resistance rated 0 hours 5 feet.

1 hour fire rated roof overhang.

Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits. Fire resistance rated 1 hour on the underside. Fm calls their acceptable risk systems class 1 while ul calls theirs classified insulated metal deck constructions. Roof eave fire resistance rating shall be permitted to be reduced to 0 hours on the underside of the.

He was told that the walls would need to have a fire resistive construction and also the eave overhang would need to be rated 1 hour as well because it encroaches into the setback. Everything you wanted to know about fire rated construction but were afraid to ask. Is required on the underside or. The detail he gave us one coat stucco sub shows 2 layers of type x screwed into the rafter tails 3 5 8 with lath and stucco over that.

With 1 2 wood structural panels with. Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits. Where when and how to determine if you need it. Enclose overhangs with soffits that have a minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. Time temperature ratings the third major roof system fire test is astm e 119. Enclose overhangs with soffits that have a minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking. This is a system test that includes structural members such as beams trusses and roof deck.