Cold-Formed Steel Framing
Overview
Cold-formed steel framing is a durable, reliable and cost-effective option for low-rise and mid-rise building projects. It typically refers to light-frame construction where the vertical and horizontal structural elements are primarily formed by a system of repetitive framing members. The framing members are typically spaced at 16 or 24 inches on center, with spacing variations lower and higher depending on the loads and coverings.
Wall members are typically vertical lipped channel “stud” members, which fit into unlipped channel “track” sections at the top and bottom. Similar configurations are used for both floor joist and rafter assemblies, but in a horizontal application for floors, and a horizontal or sloped application for roof framing. Additional elements of the framing system include fasteners and connectors, braces and bracing, clips and connectors. Cold-formed steel floor and roof trusses are also available for cold-formed steel framing applications.
Cold-formed steel refers to a manufacturing process where metallic-coated sheet steel is roll-formed into products such as studs, joists, track, headers, angles, truss members and other components. For cold-formed steel framing, typical material thicknesses range from 0.0147 in. (0.373 mm) to about 1/8 in. (3.175 mm). Standard cold-formed steel products are defined in AISI S220, North American Standard for Cold-Formed Steel Nonstructural Framing, 2020 Edition and AISI S240, North American Standard for Cold-Formed Steel Structural Framing, 2020 Edition (free downloads at www.aisistandards.org). A variety of cold-formed steel framing products are available from various manufacturers. Cold-formed steel framing products are typically made from zinc-coated cold-rolled steel with yield strength of 33 ksi or 50 ksi.
Cold-formed steel framing in North America is typically designed and constructed in accordance with standards developed by the American Iron and Steel Institute. Cold-formed steel framing lends itself to architectural layouts where the floor and roof systems are supported on bearing walls. Cold-formed steel framing has been used successfully in building projects greater than 10 stories in height.
View the current Environmental Product Declarations (EPDs) for cold-formed steel products.
Following is a listing of cold-formed steel framing resources and organizations that can provide additional information.
Design Guides & Manuals
- AISI Cold-Formed Steel Framing
- Cold-Formed Steel Engineers Institute
- Steel Stud Manufacturers Association
- Canadian Sheet Steel Building Institute
Design Aids
- AISI Cold-Formed Steel Framing (Design Aids)
- AISI Cold-Formed Steel Framing (Design Standards)
- Cold-Formed Steel Engineers Institute
- Canadian Sheet Steel Building Institute
Research
- AISI – Research Reports
- AISI – Papers and Articles
- Cold-Formed Steel Engineers Institute
- Canadian Sheet Steel Building Institute
Webinars/Seminars
Case Studies
- Cold-Formed Steel Engineers Institute
- Steel Framing Industry Association
- Canadian Sheet Steel Building Institute
Partners
AISI Construction News
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Steel Bridge Task Force Announces Justin Ocel as the Recipient of the 2024 Richard S. Fountain Award
February 15, 2024 -
AISI Updates Standard for the Design of Profiled Steel Diaphragm Panels
December 27, 2023 -
AISI Publishes New Research Report for Cold-Formed Steel Deck Applications
October 19, 2023 -
Steel Bridge Webinar Series to Offer Solutions That Support Improvement of the National Infrastructure
October 17, 2023 -
Jonathan Humble to Conduct Energy Code Session on October 26 at the 2023 Connecticut Architecture Conference + Expo
October 10, 2023
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