Tech Note FC101-22: Design of Cold-Formed Steel Rim Track
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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.
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Tech Note T201-20: Firestops in Head-of-Wall Joints for Cold-Formed Steel Construction
Summary: The selection of fire-resistive joint systems is aided by an abundance of listed options. This same abundance can make it difficult to find the fire-resistive joint system that not only meets project requirements but also the most project-friendly. Firestop manufacturers conduct training programs for installing contractors, architects, building officials, and others who would like to learn more about fire-resistive systems. Specialty firestop contractors can help with understanding project-specific opportunities. Both UL and FM offer certification programs for firestop contractors to help ensure consistency across the industry. Moreover, it is important to note whether a project will require special inspection of firestops systems. For example, 2018 IBC, Section 1705.17, lists requirements for special inspection of firestops in certain high-rise buildings. There are companies that focus on offering special inspection services. For recommendations or further learnings, please contact your firestop provider. The firestop industry is focused on improving life safety in the built environment through improved passive fire protection.
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 W103-23: Design of By-Pass Slip Connectors in Cold-Formed Steel Construction
This Tech Note Updates and Replaces Tech Note W103-11
Summary: A curtain wall can be defined as a non-vertically loaded exterior wall (aside from self weight) supported by the primary structural frame of the building. When it comes to cold-formed steel framing, this definition can encompass a great many possible assemblies and applications. This Tech Note discusses the various structural elements of a curtain wall system and introduces the subjects of Design Loads and Framing Analysis.
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 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 L002-23: Strap Braced Wall: Loose Strap Considerations
Summary: Strap braced walls are a common means of providing lateral stability for cold-formed steel load-bearing structures. Discussed in this technical note are causes of loose straps, potential stability implications as well as potential means of remediation.
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 G105-22: Compression Member Reinforcement
Summary: To modify the capacity of a compression member, e.g. wall stud or truss web, adding a reinforcement may result in a non-prismatic member. This Tech Note provides guidance to evaluate the strength of a non-prismatic compression member.
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 F101-12: Screws for Cold-Formed Steel-To-Wood and Wood-To-Cold-Formed Steel Attachments
Summary: Screws are often used to attach cold-formed steel (CFS) framing to wood members or wood structural panel decking to CFS joists or rafters. The AISI North American Specification for the Design of Cold-Formed Steel Structural Members (AISI S100) provides design equations for screw connection capacity for CFS members. The National Design Specification for Wood Construction (NDS) provides design equations for fastener/connection capacity (nails, wood screws, bolts, etc.) in wood members. The Engineered Wood Association (APA) and the building codes offer several resources for determining the capacity of screw connections attaching wood sheathing. This Tech Note reviews these resources and discusses design and detailing of these fastener connections.
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 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.