Structural · S-TYWSY

HVAC Unit Curb and Framing Detail on Steel Roof Deck

Materials

Steel

Elements

Beams Bracing Connections / Plates

Connections

Bolted Connection

About this detail

An HVAC unit is supported by a prefabricated level curb bearing on a metal roof deck, which spans across wide-flange structural steel beams. The roof framing incorporates continuous C10x15.3 channel shapes, bent plates, and a one-quarter-inch thick stiffener plate connected with three-quarter-inch diameter machine bolts. Fillet welds of three-sixteenth-inch and one-quarter-inch sizes secure the steel framing members typically on three sides as indicated. Flutes are filled with rigid insulation or insulating concrete under the curb. General notes specify that the mechanical contractor designs the heater, hangers, and sway braces, prohibits drilling structural members without written permission from the structural engineer, and requires special inspection for snug-contact bolted connections.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details