This structural plan details roof framing for an opening running perpendicular to the roof joists. C12x30 channels run below the long sides of the curb spaced at six feet on center maximum, with metal roof deck removed exclusively at penetration zones. Supporting angles sized L4x4x1/4 are positioned below the deck with the vertical leg oriented down, welded through the deck with typical one-eighth inch welds.
A A OPEN OPEN C12x30 BLW LONG SIDE OF CURB L4x4x1/4 BLW DECK VERT LEG DOWN C12x30 BLW LONG SIDE OF CURB REMOVE DECK AT PEN ONLY C12x30 AT 6'-0"oc MAX REMOVE DECK AT PEN ONLY ROOF JST UNIT PERPENDICULAR TO JSTS PLAN VIEW THRU DECK, TYP 1/8 THRU DECK 1/8
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