Architectural · A-AN5AD

Mechanical Concrete Pad

Materials

Concrete Reinforced Concrete Metal (misc.)

Elements

Decks Waterproofing / Flashing Reinforcing

About this detail

Mechanical concrete pads sit atop structural metal decks and structural framing to support rooftop equipment including VRF units and air handlers. A reinforced waterproofing membrane wraps up the sides and continues over the concrete pad with a minimum six-inch vertical leg, transitioning as specified on structural plans. The pad assembly at the VRF unit includes a three-inch thickness over the deck with a slope and a mechanical unit stand anchored to the pad. The pad assembly at the air handler maintains a flat profile with no slope over the three-inch concrete topping.

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