Tech Note F501-26: Cold-Formed Steel Truss To Bearing Connections
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This Tech Note Updates and Replaces Tech Note F501-11
Summary: This Technical Note is intended as general educational information and to highlight what the Building Designer should be aware of regarding truss to bearing connections. Topics addressed include what loads due to wind truss to bearing connections may have to resist, who is ultimately responsible for truss to bearing connection design, general guidance on the design of truss to bearing connections, and an illustrative design example. Loads due to seismic forces are not addressed in this Technical Note.
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 G802-23: AISI S100 Section A3.2 Other Steels
This Tech Note Updates and Replaces Tech Note G802-13
Summary: AISI S100, North American Specification for the Design of Cold-Formed Steel Structural Members Section A3.1, Applicable Steels, provides a list of pre-qualified steels that can be used without restriction. The Specification also permits steels that are not listed in Section A3.1 to be used without restriction. This Tech note provides specific examples to demonstrate how to implement Section A3.2, Other Steels.
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 G100-23: Using Chapter K of the North American Specification for the Design of CFS Structural Members
This Tech Note Updates and Replaces Tech Note G100-07
Summary: The North American Specification for the Design of Cold-Formed Steel Structural Members is intended for use throughout the U.S., Canada and Mexico and was developed by the American Iron and Steel Institute, Canadian Standards Association, and CANACERO in Mexico. The Specification provides procedures for the design of load bearing cold-formed steel members in buildings and certain other applications.
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 562-22: Powder-Actuated Fasteners in Cold-Formed Steel Construction
This Technical Note updates and replaces Tech Note 562
Summary: Power-actuated fasteners (PAF’s) are industry standard for attachment of cold-formed steel (CFS) steel framing members, usually track, to concrete, CMU or steel structural elements. “Power-actuated” is the broad category used to refer to fasteners which are driven directly through the CFS and into the substrate, using a powder, gas, compressed air or electro-mechanically driven tool. Efficient installation of framing systems is greatly enhanced by the use of PAF’s. For CFS-to-steel applications, the specification AISI S100 addresses all relevant limit states with equations and safety/ resistance factors. For CFS-to-concrete, limited guidance is provided but not all limit states are covered. This technical note will provide design guidance based on AISI S100, as well as installation and good detailing practice.
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 F102-21: Screw Fastener Selection For Cold-Formed Steel Frame Construction
This Technical Note updates and replaces CFSEI Tech Note F102-11
Summary: Specifying the proper fastener is necessary to assure the proper performance of the connections used in cold-formed steel construction. Cold-formed steel connections primarily utilize externally threaded fasteners, so embedment is not the controlling parameter. Instead, the design of the fastener along with the thickness of the steel govern the value of the connection. This Tech Note provides basic information for determining the appropriate screw type for various applications.
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 F100-23: Design of Clip Angle Bearing Stiffeners
Summary: Clip angles are commonly used in cold-formed steel constructions to attach floor joists to the rim track. Clip angles can also work as bearing stiffeners to reinforce the web crippling strength of the floor joists at the bearing locations. As the length of the clip angle may significantly influence the floor joist web crippling strength, it is critical to ensure the minimum length of the clip angle in design.
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 F501-11: Cold-Formed Steel Truss To Bearing Connections
Summary: This Technical Note is intended as general educational information and to highlight what the building designer should be aware of with regard to truss to bearing connections. Topics addressed include what loads due to wind truss to bearing connections may have to resist, who is ultimately responsible for truss to bearing connection design, general guidance on the design of truss to bearing connections, and an illustrative design example. Loads due to seismic forces are not addressed in this Technical Note.
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.