editions of the Specification developed by AISI and CSA. AISI: for example, this Specification will be referred as AISI S, where the last. AISI SSERIES FRAMING STANDARDS BUNDLE. This bundle includes 11 documents. (Download). AISI S/S (). AISI S AISI. AISI-S General requirements for residential and commercial construction, prescriptive and engineered design. Examples include member identification.

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This newly developed chapter provides minimum requirements for quality control and quality assurance for material control and installation for cold-formed steel aixi construction. ASTM C has historically stipulated manufacturing tolerances for cold-formed steel structural framing members.

This new chapter lists applicable AISI test standards for cold-formed steel framing members, connections, and systems. This computational method is applicable for walls sheathed with steel sheet. The effective strip method is permitted to be used within the following range of parameters:. This chapter contains design provisions for cold-formed steel aii members s200-70 assemblies, as previously included in AISI S, S, S, and X200-07 Inthe manufacturing tolerance values were extended to the flange width and stiffening lip length.

For roof or floor diaphragms s20-007 a maximum aspect ratio of 4: This chapter provides installation requirements previously contained in the various framing standards.

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 other standards addressed such topics as a code of standard practice, the definition of standard product, and prescriptive design for residential applications.

Beneficial for the design engineer is a new Effective Strip Method that enables the calculation of the nominal in-plane shear wall strength for Type I shear walls Figure 2. 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.

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Six of these standards addressed the design of structural elements, such as general provisions, wall studs, floor joists, trusses, headers, and shear walls. This method provides an alternative approach to determine the shear wall strength, especially for s200–07 that are outside the limitations of the tested systems. Section reference table S and previous standard.

Free CFS Publications from the AISI/SMDI Construction Market Council

Effective strip method model for steel-sheet sheathing. This new exception provides for a more economical built-up member, as is often used as a jamb stud or shear wall boundary member. These cold-formed steel framing standards are available as free downloads at www. This has been an often asked question by framing design engineers. 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.

The truss component structural performance load test and full-scale truss confirmatory test methods, previously included in AISI S, are provided in this appendix. Sheathing aiis discrete bracing.

AISI Cold-Formed Steel Standards Offered As Free Downloads

The chapter also includes:. The method assumes a sheathing strip carries the lateral load via tension field action.

The ends of aii 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. From tothe AISI Committee on Framing Standards developed nine different framing standards to cover specific aspects of cold-formed steel framing.

First Name Last Name. For curtain wall systems, the standard now permits the aosi of the bracing combination of sheathing attached to one side of the wall stud and discrete bracing for the other flange Figure 1. Also, for ease of use, S contains a section reference table between the S provisions and s20-07 previous provisions Table 2. This new standard includes design provisions for wall systems, floor and roof systems, lateral force-resisting systems, as well as truss and header assemblies.

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Your message Submit Comment. The discrete braces are limited to not greater than 8 feet 2. 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.

However, AISI S now incorporates an exception for a built-up aisii load bearing section comprised of two studs oriented back-to-back forming an I-shaped cross-section.

Leave a Comment Click here to cancel reply. The simple reason is, it was easier to develop small single-topic documents versus a more comprehensive multi-topic document. Format defines design considerations. This article focuses on AISI S which applies to cold-formed steel structural members subject to gravity loading, wind loading, and seismic loading, except when specific seismic detailing is required.

But, why would AISI develop six discrete framing standards as opposed to one design manual? The exception applies where the built-up section is seated properly in a track, and the top and bottom end bearing detail of the studs consists of a steel or concrete support with adequate strength and stiffness to preclude relative end slip of the two built-up stud sections.

The previous design standards limited their application to framing members having a maximum base steel aissi to mils 0. This chapter contains design, manufacturing quality criteria, and installation requirements for cold-formed steel trusses as previously included in AISI S