Cold Formed Floor Framing Ductwork Ovals

Chords in diaphragm design.

Cold formed floor framing ductwork ovals.

Evolution of cold formed steel joist framing products 4. A 12 tradeready joist comes with an 8 round hole. This project featured a dramatic curved 3 story atrium with an oval skylight. However the use of plywood or oriented strand board osb as shear resistance material is not new and has been widely accepted in the design of wood framed roof and floor diaphragms for housing.

Rather the reader is referred to the aisi standard for cold formed steel framing prescriptive method for one and two family dwellings aisi 2001 for guidance. The shape of the wall framing was designed to fit the curve of the room while also serving as a handrail support. Nominal 2x10 10 and 11 1 4 nominal 2x12 tradeready joists have an oval shaped hole that measures 6 1 4 x9. Smaller flex type ductwork pulled through the knockouts within the floor assembly.

Cold formed steel floor assemblies are relatively new shear resisting systems for residential buildings in the united states. Cold formed steel framing in a structural application is simply slower than traditional steel and concrete construction. Researchers professional engineers and builders experienced in cold formed steel framing. Cold formed steel framing cfs.

Although cold formed steel framing for floor systems also is permitted by the irc it is not covered here. Carpenter erects prefabricated cold formed steel panels. Mason lays one and a half floors of cmu and pulls off the site. This use of cold formed steel framing was both strong and far more cost effective than structural steel for this curved application.