I have a old warehouse 2 story with masonry bearing walls (20" in some places) steal beams and mix of wood and steel floor structure, the building is fully sprinklered, we are demolishing the existing non-compliant stairs and adding new stairs. With this, we are adding one hour walls (U419), but...
We have 2X12 roof rafters spanning 10'4 from ridge to wall which is less than 1/2 the distance code allows it to span. Code states a birds mouth cut can only cut into a rafter 1/4 of the depth...since a 2x6 can technically span the 10'4" is it possible to cut the birdsmouth 1/2 the depth of the...
