A diagonal brace constructed from an L4x4x5/16 angle connects to a steel beam and a steel joist using three-eighths-inch thick steel plates. The connection details feature quarter-inch fillet welds applied to both sides where specified. The steel joist manufacturer must design for a positive or negative four-thousand-pound vertical point load representing seismic force at the working stress level at each brace location.
214 S6.01 6 LEVEL) AT EACH BRACE FORCE AT WORKING STRESS 4,000# VERT. POINT LOAD (SEISMIC JOIST MFR. SHALL DESIGN FOR +/- 6 3 2 2 BOTH SIDES 1/4 2 4 5 5 BRACE WHERE OCCURS 1/4 3 1/4 1 BOTH SIDES 3 1/4 3 1/4 1 2 3 4 L4x4x5/16 DIAGONAL BRACE STEEL JOIST PER PLAN PL 3/8" x 4" x 0'-4" STEEL BEAM PER PLAN
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