Steel angles measuring L4x4x3/8 and L4x4x1/2 are positioned between the roof joists to frame the opening in a roof deck supported by roof joists or wide flange beams. The design accommodates a maximum opening dimension of 6'-0" and a 600 lb load over the opening, with larger openings or heavier loads requiring submission to the structural engineer for review.
ROOF JOIST OR WF BEAM REF. PLAN ROOF JOIST OR WF BEAM REF. PLAN 11'-0" MAX. 6'-0" MAX. NOTE: DESIGN IS BASED ON A 6'-0" MAX. OPENING DIMENSION AND A 600 LB. LOAD OVER OPENING. LARGER OPENINGS OR HEAVIER LOADS SHALL BE SUBMITTED TO STRUCTURAL ENGINEER FOR REVIEW. L4x4x3/8 L4x4x1/2 BETWEEN ROOF JOISTS TYP. TYP. TYP. TYP. ROOF DECK SPAN DIRECTION REF. PLAN 11 S612 12 S612 12 S612 13 S612
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