Tech Note L300-09: Design of End Posts for Diaphragm Shear Walls: A Perspective
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Summary: This Tech Note provides a rational engineering analysis that may replace assumptions that are commonly used and that may be overly conservative. The content of this Tech Note is based upon information in the engineering literature, in particular Timoshenko & Gere, Theory of Elastic Stability and upon engineering judgment.
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 B002-20: How Cold-Formed Steel is Used in Building Construction
Summary: Cold-formed steel framing is used in numerous applications across the building industry. The purpose of this Technical Note is to provide a general overview of common cold-formed steel shapes and various applications in which they are used.
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 F602-20: Screw Connections with Other Materials or Gaps Between the Plies
Summary: Screws are the most common connection type for connecting cold-formed steel members to one another. It is also common for gaps to be provided between members in the form of other materials such as gypsum or insulation, but unfortunately, the current standards do not provide clear direction for the design of screwed connections with gaps in the material. This Tech Note will summarize available test data and propose design guidance based on the available test data.
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 F502-18: Attachment of CFS Framing to Precast, Post-Tensioned, and Hollow-Core Concrete
Summary: Precast, prestressed, tilt-up, cast-in-place, and post-tensioned concrete are commonly used in podium construction. It is inevitable that the cold-formed steel design engineer will sooner or later be challenged with attaching cold-formed steel framing to podium construction. Towards this end, it is important for the designer to have a basic understanding of common precast concrete components and why connecting to them can be such a challenge. This Tech Note discusses the types of precast concrete components as well as the cold-formed steel anchorage options.
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 F300-09: Pneumatically Driven Pins for Wood Based Panel Attachment
Summary: Wood based panels for shear wall and horizontal diaphragms have traditionally been attached to cold-formed steel framing using tapping screws. To increase the speed of installation and to reduce the amount of labor used making these attachments, several companies supply pneumatic nailing systems. These products allow wood-based panels to be fastened to steel in a manner similar to which panels are nailed to wood framing. This Technical Note provides information on specifications, selection and field inspection of pneumatic drive pins.
This Technical Note updates and replaces LGSEA Technical Note 561b.
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 D200-12: Corrosion Protection for Cold-Formed Steel Framing in Coastal Areas
Summary: Cold-formed steel framing may be subject to corrosion when exposed to moisture and salt, both of which are prevalent in coastal areas. The 2003 edition of this technical note, based on guidelines published by the Federal Emergency Management Agency (FEMA 1986) for metal connectors used in wood-framed construction, described the cause of accelerated corrosion in buildings located near the ocean and some larger saltwater bays, as well as the variation in the corrosive environments within a typical building. The 2007 update incorporated the results of a corrosion study by Dr. Ian Robertson of the University of Hawaii Department of Civil Engineering, funded by the U.S. Department of Housing and Urban Development (SFA 2006). The influence of terrain and wind direction on corrosion rates was added to the original document. This 2012 update includes revised referenced documents and improved guidance on the proper storage of materials. This technical note outlines available corrosion-resistant materials for cold-formed steel framing members
and makes recommendations for buildings at various distances from the ocean and for different exposure conditions within an individual building.
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 G800-12: ASTM Standards for Cold-Formed Steel
Summary: This Technical Note provides an overview of the principal ASTM standards affecting cold-formed steel framing. These standards are often referenced in building codes and contractual documents, and are available for purchase on the ASTM website.
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.