AISI S—07 () AISI STANDARD North American Standard for. Cold- Formed Steel Framing— Header Design Edition (Reaffirmed ). Revision. AISI S Header Design *. – AISI S Lateral AISI S Prescriptive Method for One and Two . G, Using Chapter F of the NA Specification for the. The Standard for Cold-Formed Steel Framing – Header. Design(AISI S) is aimed at giving design professionals the tools they need to design headers.
|Published (Last):||27 August 2009|
|PDF File Size:||1.60 Mb|
|ePub File Size:||12.30 Mb|
|Price:||Free* [*Free Regsitration Required]|
Format defines design considerations. Leave a Comment Click here to cancel reply. This appendix contains requirements for the determination of the rotational stiffness that structural sheathing provides to framing members to facilitate the design for distortional buckling. However, rather than add to the complexity of the AISI Specification, it was decided that a new family of standards should be developed.
First Name S2122-07 Name. However, AISI S now incorporates an exception for a built-up axial load bearing section comprised of two studs oriented back-to-back forming an I-shaped cross-section.
Section reference table S and previous standard. The use of ASTM E results in higher nominal shear strength values as compared with the cantilever test method historically used for steel deck diaphragms.
The previous design standards limited their application to framing members having a maximum base steel thickness to mils 0. For curtain wall systems, aissi standard now permits the use of the bracing combination of sheathing attached to one side of the wall stud and discrete bracing for the other flange Figure 1.
Powered by WordPress and the Graphene Theme. Therefore AISI extended its standards development activity to support the growing needs of the cold-formed steel framing industry.
The exception applies where the built-up section is seated properly in a track, and the top and bottom end bearing detail of the aisl consists of a steel or concrete support with adequate strength and stiffness to preclude relative end slip aosi the two built-up stud sections.
Sheathing and discrete bracing. Additional explanatory language is also provided. This newly developed chapter provides minimum requirements for quality control and quality assurance for material control and installation for cold-formed steel light-frame construction.
This limitation has been eliminated from AISI S; however, it should be remembered that mils is still the maximum thickness of standard products in the United States and 97 mils 0. This chapter provides installation requirements previously contained in the various framing standards. This chapter contains design, manufacturing quality criteria, and installation requirements for cold-formed steel trusses as previously included in AISI Ausi Permanent link to this article: The discrete braces are limited to not greater than 8 feet 2.
This computational method is applicable for walls sheathed with steel sheet.
This method provides an alternative s212-0 to determine the shear wall strength, especially for those that are outside the limitations of the tested systems. This new exception provides for a more economical built-up member, as is often used as a jamb stud or shear wall boundary member. ASTM C has historically stipulated manufacturing tolerances for cold-formed steel structural framing members.
From tothe AISI Committee on Framing Standards developed nine different framing standards to cover specific aspects of cold-formed steel framing. The list of these standards, as well as other excellent design guides, are provided. This new chapter lists applicable AISI test standards for cold-formed steel framing members, connections, and systems. Inthe manufacturing tolerance values were extended to the flange width and stiffening lip length.
Although the AISI Specification had gained acceptance and aixi in widespread use, there were a number of design issues that were not adequately addressed for this emerging market. The document addresses the design for a C-shaped s212-007 section as a flexural member qisi a compression member.
This new standard includes design provisions for wall systems, floor and roof systems, lateral force-resisting systems, as s122-07 as truss and header assemblies. Yu, Wiley-Interscience Back to top. For roof or floor diaphragms with a maximum aspect ratio of 4: But, why would AISI develop six discrete framing standards as opposed to one design manual?
The effective strip method is permitted to be used within the following range of parameters:. The other standards addressed such topics as a code of standard practice, the definition of standard product, and prescriptive design for residential applications.
Also, for ease of use, S contains a section reference table between the S provisions and the previous provisions Table 2. This article focuses on AISI S which applies to cold-formed wisi structural members subject to gravity loading, wind loading, and seismic loading, except when specific seismic detailing is required.
The ends of a built-up compression member are connected by a weld having a length not less than the maximum width of the member or by connectors spaced longitudinally not more than 4 diameters apart for a distance equal to 1. Beneficial for the aidi engineer is a new Effective Strip Method that enables the calculation of the nominal in-plane shear wall strength for Aisk I shear walls Figure 2.
Connection design is limited to primarily a discussion of screw connections.
It outlines the scope, which is for design and installation of cold-formed steel framing of a floor and roof systems, b structural walls, c shear walls, strap braced walls, and diaphragms to resist in-plane lateral loads, and d trusses for load-carrying purposes in buildings. The scope was selected to provide coverage of the high volume application of cold-formed steel in light-framed construction. Effective strip method model for steel-sheet sheathing.
The method assumes a sheathing strip carries the lateral load via s2122-07 field action. Your message Submit S212–07.
These cold-formed steel framing standards are available as free downloads at www.
Design Documents » Wei-Wen Yu Center for Cold-Formed Steel Structures
The chapter also includes:. These applications include wall, floor and roof framing in a number of building types. The truss component structural performance load test and full-scale truss confirmatory test methods, previously included in AISI S, are provided in this appendix.
Six of these standards addressed the design of structural elements, such as general provisions, wall studs, floor joists, trusses, headers, and shear walls. Flexural Members Aiai E: This chapter contains design provisions for cold-formed steel framing members and assemblies, as previously included in AISI S, S, S, and S