This plan view details the framing layout for a roof scuttle opening using L-4x3x1/4 structural steel angles with long legs vertical. The angles span between the centerlines of supporting joists or beams. The vertical leg of the angle is coped at the edge of the structural support. An angle is omitted when the opening edge sits less than six inches from the support centerline.
PLAN VIEW L-4x3x1/4 (LLV) COPE VERTICAL LEG AT EDGE OF STRUCTURAL SUPPORT C.L. JOIST OR BEAMS C.L. JOIST OR BEAMS TYP. ANGLE NOT REQ'D WHEN EDGE IS LESS THAN 6" FROM CENTER
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