This structural plan view details roof curb framing for a mechanical unit positioned perpendicular to supporting joists. A channel shape C12x30 runs below the long sides of the curb, while an angle L4x4x1/4 is positioned below the deck with its vertical leg turned down. The metal deck is removed exclusively at the penetration openings as noted. A one-eighth-inch fillet weld is specified through the deck on a typical basis.
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 UNIT PERPENDICULAR TO JSTS PLAN VIEW THRU DECK 1/8 THRU DECK, TYP
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