Structural · S-86ZCG

Typical Conduit in Slab on Steel Deck

Materials

Concrete Reinforced Concrete Steel Timber / Wood Glass / Glazing Composite

Elements

Beams Floors / Slabs Decks Arches Reinforcing Roof / Floor Openings

Connections

Shear Stud / Composite

About this detail

Conduits are placed within the concrete thickness above the deck flutes, requiring a three-quarter inch minimum clear cover and choked off the deck with chairs. Light conduit arrangements specify half-inch diameter conduits with three-quarter-inch outside diameter maximum in a three-inch minimum concrete thickness, maintaining a three-inch minimum spacing and one-foot six-inch minimum spacing between groups. Heavy conduit configurations specify three-quarter-inch diameter conduits with one-inch outside diameter maximum in a four-and-a-half-inch minimum concrete thickness, requiring number four reinforcing bars at twelve inches on center perpendicular to conduits and extended one foot past conduit on both sides. Welded wire reinforcement is placed over conduits where applicable, and reinforcement takes precedence over conduit placement without adjustments. Conduits crossing composite beams are routed in the outer third of beam spans with transverse crossovers meeting a forty-five degree minimum angle.

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