An isolation joint with a joint filler strip separates the column blockout from the surrounding concrete topping slab, which surrounds a steel column and its base plate below. The blockout is filled with concrete after all floor and roof slabs are poured, maintaining a three-inch typical clearance.
CONTROL JOINT OR CONSTRUCTION JOINT, SEE TYP TOPPING SLAB CONTROL AND CONSTRUCTION JOINT DETAILS CONCRETE TOPPING SLAB ISOLATION JOINT W/ JOINT FILLER STRIP FILL W/ CONCRETE AFTER ALL FLOOR AND ROOF SLABS POURED TYP 3" CLR BASE PLATE BELOW STEEL COLUMN
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