The American Iron and Steel
Institute (AISI) Committee on Framing Standards (COFS) has developed this
Commentary on the Standard for Cold-Formed Steel Framing - Prescriptive
Method for One and Two Family Dwellings [Commentary] to provide the
background, supplemental information, engineering assumptions and methods,
and detailed calculations for the provisions of the Prescriptive Method
(AISI, 2001d). In 2004, this Commentary was expanded to address the 2004
Supplement to the Standard for Cold-Formed Steel Framing – Prescriptive
Method for One and Two Family Dwellings, 2001 Edition (AISI, 2004).
The loads, load combinations, and other design parameters used to develop
the provisions in the Prescriptive Method were based on the International
Residential Code (ICC, 2000b), the International Building Code
(ICC, 2000a) (where no provisions are included in the IRC) and ASCE 7
(ASCE, 1998).
Commentary is provided only for those sections of the Prescriptive
Method where background or supplemental information is of benefit
to the user. Sections thought to need no explanation are left blank.
This document is divided into two sections. Section 1, Commentary, contains the background, supplemental information and engineering assumptions. Section 2, Design Examples, contains detailed calculations that demonstrate how the values in the Prescriptive Method were derived.
Terms within the body of this Commentary that are shown in
italics indicate that the italicized word is a defined term by the
Prescriptive Method or by the General Provisions (AISI,2001a).
The Committee acknowledges and is grateful for the contributions of the numerous
engineers, researchers, producers and others who have contributed to the
body of knowledge on the subjects. The Committee wishes to also express
their appreciation for the support and encouragement of the Steel Framing
Alliance.
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