The detail shows two distinct conditions: bolting through a high flute and bolting through a low flute of a concrete-filled metal deck. It specifies requirements for expansion anchors, angle sizes, grout filling for oversized holes, and thread burring after tightening nuts for security. Callouts indicate specific placement rules for structural angles engaging multiple flutes.
Text on the drawing
L3x3x1/4, UNO ANGLE MUST ENGAGE (2) TWO FLUTES MIN & MUST EXTEND 1/2" PAST OUTER EDGE OF FLUTE BASE PLATE BOLT THROUGH LOW FLUTE BOLT THROUGH HIGH FLUTE IF HOLE DIAMETER EXCEEDS BOLT DIAMETER BY 1/8" OR MORE FILL SPACE W/ GROUT EQUIPMENT PLATE A B BURR THREADS AFTER TIGHTENING NUTS TYP 1/2" DIA EXP ANCHORS W/ 3-3/4" MIN NOM EMBED, TYP FIRE MARSHAL STAMP
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