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 W400-23: Mechanical Bridging and Bridging Anchorage of Axially Loaded Cold-Formed Steel Studs
This Tech Note Updates and Replaces Tech Note W400-16
Summary: The purpose of this technical note is to provide a clear understanding of the design requirements and methods to laterally brace (bridge) axially loaded cold-formed steel stud walls.
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 W500-23: Construction Bracing for Walls
This Tech Note Updates and Replaces Tech Note W502-12
Summary: Temporary construction bracing may be necessary to assure structural stability of wall assemblies. This temporary bracing is required to resist loads imposed on a structure during construction. The purpose of this Technical Note is to provide design guidance.
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 W601-23: Design Methodology for Hole Reinforcement of Cold-Formed Steel Compression Members
Summary: Cold-formed steel compression members, e.g., wall studs, are sometimes damaged inadvertently by other construction trades. An all-too-common damage is the cutting of large holes in either the flange or web elements of the cross section. In situations where the cross section of the cold-formed steel member has been compromised by the cutting of holes, the member must either be replaced or reinforced. This Tech Note discusses methodologies for engineering a reinforcement solution for a field cut hole in either the flange or the web element. The Tech Note presents a reinforcing concept to achieve the desired required strength of the section.
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.
Webinar on Cold-Formed Steel Attachment to Concrete in Seismic Zones
Continuing Education Credits Available – 1.5 PDH Credits
For decades, Power- Actuated Fasteners (PAFs) have been used in the construction industry as a safe, reliable, and productive method to fasten various building components-such as cold-formed steel (CFS) framing-to steel and concrete. Code provisions for the use of PAFs in seismic areas for attachments of cold-formed metal framing to concrete have been subject to various interpretations. This presentation will provide recommendations based on Hilti’s understanding of the code provisions.
AISI S100-16, North American Specification for the Design of Cold-Formed Steel Structural Members, 2016 Edition (including the latest supplements), provides some basic provisions regarding calculation of the shear and tension resistance of a connection between CFS and concrete, but does not provide specific equations or values. In addition, Chapter 13 of ASCE/SEI 7-16, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, includes some restrictions regarding the use of PAFs in Seismic Design Categories (SDC) D, E, and F. Chapter 13 is entitled “Seismic Design Requirements for Nonstructural Components,” so the focus is on nonstructural applications like partition walls.
This presentation is designed to clarify the intent of the language in the code-referenced publications AISI S100 and ASCE/SEI 7-16 as it relates to PAFs used to attach track to concrete, in SDC A-C and SDC E-F. The presentation will also provide practical guidance to the designer regarding which design values should be used and where those values can be obtained. Additional practical recommendations will be provided regarding the specification of various types of PAFs and their embedment depths into the concrete.
Christopher Gill, Hilti Inc.
Chris Gill is the Technical Services Manager for Direct Fastening at Hilti in Plano, Texas. He is responsible for the department which performs product testing, generates technical data, publishes technical documents, and obtains approvals and listings for power-actuated and screw-fastening products. He is a member of the American Iron and Steel Institute (AISI) Committee on Specifications, and a voting member of its subcommittees responsible for connections and joints, and diaphragm design. Chris recently participated in the 2020 NEHRP Provisions Update Committee, Issue Team 9, which addressed alternate provisions for seismic diaphragm design, and recommended new provisions for incorporation into ASCE/SEI 7. He has also contributed to the soon-to-be published ASCE/ SEI Design Guide “Cold-Formed Steel Connections to Other Materials.”
Chris has a total of 33 years working in the fastening and anchoring industry. He previously worked as a field engineer, field engineering manager, trade manager and product manager with Hilti. He holds a B.S. degree in Engineering from Brown University and an M.S. degree in Engineering and Technology Management from Oklahoma State University.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Webinar on Cold-Formed Steel Classroom: Connection Design 101
Continuing Education Credits Available – 1.5 PDH Credits
This webinar will review the fundamentals of cold-formed steel connection behavior and design. The primary focus will be on screw and weld connections; however, a limited discussion of bolt and power-actuated fastener (PAF) connections will also be provided. An overview of the design provisions in AISI S100, North American Specification for the Design of Cold-Formed Steel Structural Members will be included. In addition, design issues for typical cold-formed steel framing connections will be explored, including deflection track, stud-to-track, stud splice and cantilever knee wall connections. 
Presenter: Roger LaBoube, Ph.D., P.E.
Wei-Wen Yu Center for Cold-Formed Steel Structures
Roger LaBoube, Ph.D., P.E. is Curator’s Distinguished Teaching Professor Emeritus of Civil, Architectural and Environmental Engineering and Director of the Wei-Wen Yu Center for Cold-Formed Steel Structures at the Missouri University of Science & Technology (formerly University of Missouri-Rolla). Dr. LaBoube holds B.S., M.S., and Ph.D. degrees in Civil Engineering from the University of Missouri-Rolla. Dr. LaBoube has an extensive background in the design and behavior of cold-formed steel structures. His research and design activities have touched on many facets of cold-formed steel construction including cold-formed steel beams, panels, trusses, headers, and wall studs as well as bolt, weld, and screw connections. He is active in several professional organizations and societies, including membership on the American Iron and Steel Institute’s Committee on Specifications for the Design of Cold-Formed Steel Structural Members and chairman of the AISI Committee on Framing Standards. He is a registered Professional Engineer in Missouri.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Webinar on Cold-Formed Steel Classroom: Design Topics Not in a Design Standard
Continuing Education Credits Available – 1.5 PDH Credits
Last year alone the CFSEI Hotline responded to over 4,800 inquires. These inquires cover the gamut of cold-formed steel applications. Because these questions often are beyond the scope of a design standard engineering judgement is needed. Roger will review a few of the Hotline topics with a focus on employing engineering principals to solve everyday design considerations. Topics to be addressed are:
- Should loose straps be a concern?
- Does gypsum between the steel plies impact the screw connection strength?
- For the single-side strap brace, what are the implications for the design of the boundary post?
- How does one design a shear wall for force transfer around openings?
- What wind loading drift limits are appropriate for mid-rise structures?
Presenter: Roger LaBoube, Ph.D., P.E.
Wei-Wen Yu Center for Cold-Formed Steel Structures
Roger LaBoube, Ph.D., P.E. is Curator’s Distinguished Teaching Professor Emeritus of Civil, Architectural and Environmental Engineering and Director of the Wei-Wen Yu Center for Cold-Formed Steel Structures at the Missouri University of Science & Technology (formerly University of Missouri-Rolla). Dr. LaBoube holds B.S., M.S., and Ph.D. degrees in Civil Engineering from the University of Missouri-Rolla. Dr. LaBoube has an extensive background in the design and behavior of cold-formed steel structures. His research and design activities have touched on many facets of cold-formed steel construction including cold-formed steel beams, panels, trusses, headers, and wall studs as well as bolt, weld, and screw connections. He is active in several professional organizations and societies, including membership on the American Iron and Steel Institute’s Committee on Specifications for the Design of Cold-Formed Steel Structural Members and chairman of the AISI Committee on Framing Standards. He is a registered Professional Engineer in Missouri.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Webinar on Cold-Formed Steel Classroom: Impact of the 2018 IBC
Continuing Education Credits Available – 1.5 PDH Credits
The American Iron and Steel Institute’s Committee on Framing Standards has developed 2015 editions of the suite of cold-formed steel framing design standards (S220-15, S240-15, S400-15) and the Committee on Specifications has developed S310-15 for diaphragm design, as well as a 2016 edition of the North American Specification (S100-16). This presentation will discuss the scope and some of the changes to these design standards. Specific reference will be provided to clarify adoption of the standards in the 2018 International Building Code.
The presentation will highlight available design aids provided by AISI such as AISI D110-16, Cold-Formed Steel Framing Design Guide, which has been updated to reflect the design requirements of AISI S100-2012 and AISI S240-2015. Another excellent source for design examples is the Cold-Formed Steel Engineers Institute Tech Notes which will also be addressed by the presentation. Also, an overview of the soon to be published AISI D113 Cold-Formed Shear Wall Design Guide will be provided.
Presenter: Roger LaBoube, Ph.D., P.E.
Wei-Wen Yu Center for Cold-Formed Steel Structures
Roger LaBoube, Ph.D., P.E. is Curator’s Distinguished Teaching Professor Emeritus of Civil, Architectural and Environmental Engineering and Director of the Wei-Wen Yu Center for Cold-Formed Steel Structures at the Missouri University of Science & Technology (formerly University of Missouri-Rolla). Dr. LaBoube holds B.S., M.S., and Ph.D. degrees in Civil Engineering from the University of Missouri-Rolla. Dr. LaBoube has an extensive background in the design and behavior of cold-formed steel structures. His research and design activities have touched on many facets of cold-formed steel construction including cold-formed steel beams, panels, trusses, headers, and wall studs as well as bolt, weld, and screw connections. He is active in several professional organizations and societies, including membership on the American Iron and Steel Institute’s Committee on Specifications for the Design of Cold-Formed Steel Structural Members and chairman of the AISI Committee on Framing Standards. He is a registered Professional Engineer in Missouri.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Webinar on Cold-Formed Steel Connection Applications
Continuing Education Credits Available – 1.5 PDH Credits
This webinar will explore common cold-formed steel connection applications with an emphasis on clip angles. Until AISI D114, Cold-Formed Steel Clip Angle Design Guide was issued in 2021, there was no recognized design approach for clip angles. Based on research at the University of North Texas, a better understanding of the behavior and therefore the design requirements are now available.
Connection design information provided by AISI D110, Cold-Formed Steel Framing Design Guide, AISI D112, Brick Veneer Cold-Formed Steel Framing Design Guide and CFSEI Tech Notes will also be discussed.
Presenter: Roger LaBoube, Ph.D., P.E., Cold-Formed Steel Engineers Institute
Dr. Roger A. LaBoube is Curator’s Distinguished Teaching Professor Emeritus of Civil, Architectural and Environmental Engineering and former director of the Wei-Wen Yu Center for Cold-Formed Steel Structures at the Missouri University of Science & Technology. Dr. LaBoube holds B.S., M.S., and Ph.D. degrees in Civil Engineering from the University of Missouri-Rolla. He has an extensive background in the design and behavior of cold-formed steel structures. His research and design activities have touched on many facets of cold-formed steel construction, including cold-formed steel beams, panels, trusses, headers, and wall studs as well as bolt, weld, and screw connections. Dr. LaBoube is active in several professional organizations and societies. He served as chairman of the American Iron and Steel Institute (AISI) Committee on Framing Standards and is an emeritus member of the AISI Committee on Specifications for the Design of Cold-Formed Steel Structural Members. He is a registered professional engineer in Missouri.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Price: $100
Webinar on Cold-Formed Steel Curtain Wall Design
Continuing Education Credits Available – 1.5 PDH Credits
Curtain walls with various types of cladding are commonly used for many modern structures and are often framed with cold-formed steel. Curtain walls are typically attached to the main building frame and therefore must be designed to accommodate deflections of the structural frame and also designed to transfer wind and seismic forces to the structure. This webinar will cover many of the topics a designer will need for a complete cold-formed steel curtain wall design. The information presented will be based upon AISI S100, North American Specification for the Design of Cold-Formed Steel Structural Members, AISI S211, North American Standard for Cold-Formed Steel Framing – Wall Stud Design and various CFSEI Technical Notes. Some specific topics covered will include stud design, top track design, design of openings, bridging and various additional miscellaneous topics. Example calculations will also be provided covering studs, top track, connections and openings.
Presenter: Sutton Stephens, P.E., S.E., Ph.D.
Sutton Stephens, P.E., S.E., Ph.D. has experience in the structural engineering field and in education. He has worked for consulting engineering firms in Washington and Montana and taught structural engineering courses at Kansas State University in the Architectural Engineering Department. In addition to the design of cold-formed steel structures, he has authored or co-authored a number of research papers covering various topics in cold-formed steel. He has served in the AISI Committee on Framing Standards (COFS) and chaired the Prescriptive Methods sub-committee. He also served on the CFSEI Executive Committee for two terms.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically
Webinar on Cold-Formed Steel Floor System
Continuing Education Credits Available – 1.5 PDH Credits
This webinar will focus on the ideation, development, analysis and experimental evaluation of an innovative lightweight modular floor system utilizing cold-formed steel. As part of a research project funded by the American Institute of Steel Construction (AISC), researchers at the University of Kansas developed a novel floor system composed primarily of cold-formed steel, intended for modular use in steel-framed buildings. The webinar will highlight the background and initial development of the floor system, including design and construction considerations and corresponding analyses. As rapid fabrication, vibration mitigation and diaphragm behavior were emphasized in the development of the floor system, experimental testing of the floor focused on the cyclic behavior of connectors in the cold-formed steel components, vibration serviceability of the floor, and cyclic diaphragm performance within a steel-framed structure. All aspects of system validation will be presented, including physical and analytical evaluations as well as recommendations for future implementation and other project.
Matthew F. Fadden, Ph.D., P.E., Wiss, Janney, Elstner Associates
Dr. Fadden joined WJE with 10 years of experience in structural engineering research and consulting. His primary areas of expertise include the design, analysis and evaluation of steel structures (hot-rolled and cold-formed) and reinforced concrete structures. Additionally, Dr. Fadden has expertise in structural evaluation using finite element modeling and structural testing. His experience also includes seismic design, structural vibrations, offshore structures and litigation support.
Prior to joining WJE, Dr. Fadden was a professor in the Department of Civil, Environmental, and Architectural Engineering at the University of Kansas. There, his research areas included modular systems and connections for steel buildings, bolted and welded connections, ancillary sign structures, structural vibrations, and additive manufacturing for civil infrastructure. Dr. Fadden has authored many technical publications in referenced journals and provided numerous conference presentations.
Dr. Fadden is a member of the American Institute of Steel Construction (AISC), the American Society of Civil Engineers (ASCE), and the Cold-Formed Steel Engineers Institute (CFSEI). He is a registered Professional Engineer in Alabama, Florida, Kansas and Louisiana He earned a B.S. degree in Civil Engineering from the University of Illinois at Urbana-Champaign and M.S. and Ph.D. degrees in Civil Engineering from the University of Michigan.
William N. Collins, Ph.D., P.E., University of Kansas
Dr. Collins is the Chair’s Council Associate Professor of Civil, Environmental and Architectural Engineering at the University of Kansas.
Dr. Collins’ expertise is in structural engineering, with a particular focus on fracture and fatigue behavior and metallic infrastructure. He has been associated with numerous projects related to structural behavior, fabrication and inspection. He is active with numerous professional organizations, including TRB, ASTM International and the AASHTO/NSBA Collaboration. Dr. Collins is also engaged in a variety of educational initiatives at the University of Kansas, including the development and implementation of peer mentoring in structural engineering curricula, an effort that has spread to other groups and departments within the university. He was awarded the AISC Milek Fellowship in 2021.
Previously, he was a research engineer at Purdue University and a research/teaching assistant at Virginia Polytechnic Institute and State University (Virginia Tech). He was also a timberwright at Blue Ridge Timberwrights in Christiansburg, Virginia and a construction superintendent at Prospect Homes of Richmond.
Dr. Collins is a registered Professional Engineer in Kansas. He holds B.S., M.S., and Ph.D. degrees in Civil Engineering, Structural Engineering and Materials from Virginia Tech.
In order to receive credit for this course, you must complete the quiz at the end and pass with at least 80% for a certificate to be generated automatically