The assembly features lightweight concrete over twenty gauge W3 metal deck spanning north-south, supported by W16 beams sized per plan. A spandrel beam aligns near the outer edge with a four-inch seismic gap separating it from adjacent framing, accompanied by guardrails provided by others. Buckling-restrained braced frame columns extend down to concrete footings below the existing slab on grade. Double angles measuring 2L3x2x1/4 with long legs back-to-back act as kicker braces typical at columns along grid 2.9.
FIRST FLOOR 0'-0" EQUIPMENT PLATFROM 14'-8" 3 2.6 2.7 3.1 2.9 3.25 LW CONC OVER 20 GA W3 DECK SPANNING NORTH-SOUTH W16 BEAM PER PLAN GUARDRAIL BY OTHERS SPANDREL BEAM 2L3x2x1/4 LLBB KICKER BRACE, TYP AT COLUMNS ALONG GRID 2.9 BRB FRAME COL [E] SLAB ON GRADE FOOTING 0'-4" SEISMIC GAP S7.2 14 S7.1 9
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