Hollow structural section struts connect to wide-flange steel beams and truss girders using three-sixteenth-inch typical fillet welds, with sizing determined per the structural plan. A three-by-four wood blocking sits between sub-purlins spaced at two feet on center, secured by three-quarter-inch diameter welded threaded rods at twelve inches on center. A three-by wood nailer fastens with one-quarter-inch diameter by two-inch long lag screws at twelve inches on center through a three-by-three by one-quarter-inch structural angle spaced at eight feet on center. Steel joists and sub-purlins tie into the framing assembly as indicated on the roof framing plan.
A-A SECTION B-B SECTION HSS TO STEEL WF BEAM B-B SECTION HSS TO STEEL GIRDER 6x BLOCKING BETWEEN SUBPURLINS WITH 3/4" ∅ WELDED THREADED RODS @ 12"OC 3x NAILER WITH 1/4" ∅ x 2" LONG LAG SCREWS @ 12"OC THROUGH ANGLE L3x3x1/4 @ 8'-0"OC HSS SEE PLAN FOR SIZE AND LENGTH SEE SECTION "B-B" FOR CONNECTION TO STEEL GIRDER / WF BEAM 4 SD3 21 SD3 3/16 STEEL JOIST 3/16 HSS TO ANGLE TYP 3/16 HSS TO ANGLE TYP (2) ROWS AT BN SPACING (4 LINES WHERE BN IS STAGGERED) 8 SD3 SUB-PURLINS @ 2'-0"OC 8 SD3 SIM AA - STEEL JOIST SEE ROOF FRAMING PLAN 3/16 HSS TO WF BM TYP HSS SEE PLAN FOR SIZE AND LENGTH STEEL BEAM SEE PLAN 3/16 HSS TO GIRDER TYP HSS SEE PLAN FOR SIZE AND LENGTH TRUSS GIRDER SEE PLAN
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