Tech Note G801-13: ASTM A1003 – No Cause for Rejection
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Summary: Building codes and design standards that reference ASTM International (ASTM) A1003 standard for cold-formed steel framing products have the potential to cause confusion and project delays for those who are unfamiliar with the requirements of this new material standard. This Technical Note, first published in 2008, provides a comparison of the requirements of A1003 with the more familiar standards traditionally used for cold-formed steel framing products, and demonstrates that steel ordered or furnished to the old standards should be no cause for rejection. The 2013 revision references a change to the requirements of ASTM A1003 regarding material thickness when ordering or supplying steel sheet.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
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Tech Note S300-21: Coordinating Cold-Formed with Metal Buildings
Summary: This Technical Note presents a discussion of both the design responsibilities and the need for coordination when integrating field-framed, i.e., stick-built, cold-formed steel (CFS) framing with a metal building system. Important potential coordination topics connection details and design concepts are highlighted.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note L001-10: Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006 IBC
Summary: This Technical Note is intended to discuss some of the design requirements, detailing and practical limitations of diagonal strap bracing design. Diagonal flat strap bracing is a commonly used type of lateral force resisting system in residential and low rise commercial cold-formed steel applications.
This Technical Note is an editorial revision of Technical Note L001-09.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note G900-23: Design Methodology for Hole Reinforcement of Cold-Formed Steel Bending Members
This Tech Note Updates and Replaces Tech Note G900-15
Summary: The AISI S100, North American Specification for the Design of Cold-Formed Steel Structural Members does not provide guidelines for the reinforcement of holes in cold-formed steel members. This Technical Note provides a methodology for engineering a reinforcement solution.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note J100-23: Cold-Formed Steel Floor Joist Design
This Tech Note Updates and Replaces Tech Note J100-11
Summary: Cold-formed steel (CFS) joists have become very popular where non-combustible material and long unsupported spans are required in design. The purpose of this Tech Note is to provide a review and summary of the AISI S240, North American Standard for Cold-Formed Steel Structural Framing and S100, North American Specification for the Design of Cold-Formed Steel Structural Members design requirements for cold-formed steel floor joists.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note W200-23: Header Design
This Tech Note Updates and Replaces Tech Note W200-09
Summary: AISI S240, North American Standard for Cold-Formed Steel Structural Framing provides provisions needed to design headers over door and window openings in buildings. AISI S240 Section B3.3 – Header Design reflects the appropriate design procedures for back-to-back headers, box headers, and Single, Double and Inverted L-headers subject to gravity loads or wind uplift loads. This Technical Note provides additional recommendations and design examples intended to supplement the AISI S240 header provisions.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note F701-23: Evaluation of Screw Strength
This Tech Note Updates and Replaces Tech Note J100-11
Summary: The design provisions for screw connections contained in the AISI S100, North American Specification for the Design of Cold-Formed Steel Structural Members contains specific limit states equations that pertain to the design strength of the connecting elements, i.e., sheets. In addition to sheet related design limit states, AISI S100 also provides design provisions for the screw when subjected to either pure shear or pure tension. However, the screw design provisions require that the screw capacity be defined by tests. In the absence of test data, the design engineer is at a loss for evaluating the strength of the screw. This Tech Note provides design guidance for the evaluation of the screw when subjected to pure shear, pure tension and combined shear and tension.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note L101-23: Design of Cold-Formed Steel Sheet and Wood Structural Panel Sheathed Shear Walls for Wind and Seismic Forces
Summary: This Technical Note provides an overview of low seismic and wind-controlled steel sheet and wood structural panel sheathed cold-formed steel (CFS) framed shear wall designs. It is a digest of the AISI D113-19, Cold-Formed Steel Shear Wall Design Guide and presents a more basic overview of design considerations. Sample shear wall capacity and loading comparisons are provided. For detailed design examples, refer to the AISI D113-19.
Code references are limited to AISI S240-15, North American Standard for Cold-Formed Steel Structural Framing; more detailed references, including AISI S400-15, North American Standard for Seismic Design of Cold-Formed Steel Structural Systems for high seismic design requirements can be found in the AISI D113-19.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.
Tech Note FC101-22: Design of Cold-Formed Steel Rim Track
Summary: Cold-formed steel floor, roof, soffit, and ceiling joists are widely used in commercial applications. End of the joist rim track is an important component of many floor/roof/ceiling/soffit systems used to transfer load from the joist to another component of the structure. This Technical Note provides an overview of different rim track applications and how each is designed.
Disclaimer: Designs cited herein are not intended to preclude the use of other materials, assemblies, structures or designs when these other designs demonstrate equivalent performance for the intended use. CFSEI documents are not intended to exclude the use and implementation of any other design or construction technique.