Tech Note T202-20: Thermal Energy Transfer of Cold-Formed Steel Framing
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Summary: While the concepts of energy conservation and efficiency are not new, the demand for sustainable building is at an all-time high. Energy efficiency, and more specifically thermal energy transfer in steel stud construction, presents the construction team with a clear opportunity for reduction in thermal bridging. Advanced analysis of building thermal simulation through scientific thermal modeling programs illustrates that the construction team has the ability to significantly reduce thermal transfer. Use of cold-formed steel framing with a reduced thermal bridging area, in combination with increased spacing of the framing system provides, among other benefits, a significant and positive impact on thermal performance.
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 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 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 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 T100-12: Fire Assemblies of Cold-Formed Steel Construction
Summary: Cold-formed steel has been widely used in commercial buildings, especially in non-load bearing (partitions) and curtain wall applications. Cold-formed steel sections are increasingly used as primary structural members, such as beams and columns, or as load-bearing walls or partitions in commercial and residential construction. In most cases, these members are required to be fire resistant where they are part of a compartment’s wall or floor, or where they support other floors. The purpose of this Tech Note is to provide the user with a comprehensive list of resources summarizing available tested fire rated steel assemblies, building code requirements, test methods and applicable
references.
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 W600-21: Cold-Formed Steel Load-Bearing Wall Design
Summary: This Technical Note has been written to help cold-formed steel (CFS) engineers further their understanding of structural load-bearing CFS walls. Given the myriad of details required for such structures, the importance of proper design and analysis of load-bearing CFS members cannot be understated. This Technical Note will discuss the various design considerations that must be taken into consideration during the design phase of such structures.
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 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.