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Sponsored by ASCE's Structural Engineering Institute and ASCE Continuing Education.
INSTRUCTOR: Alexander Newman, P.E., F.ASCE
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Purpose and Background
Cold-formed steel framing has become one of the most common materials used in building structures. In conventional construction, light-gauge stud walls provide a cost-effective and non-combustible alternative to wood. Cold-formed girts and purlins are typically used as secondary framing of pre-engineered metal building systems. Because the design of cold-formed framing is very complex and tedious, it normally requires specialized software. Consulting structural engineers rarely perform such design by themselves, relying instead on the design tables and typical details provided by the component manufacturers. However, not all the design assumptions and details used by the suppliers are equally valid, and sometimes controversies arise about the best way to specify the framing. This webinar provides a concise and practical primer on the design of cold-formed steel framing and addresses the common areas of misunderstanding. The instructor, who has designed the framing since 1979, shares the lessons he has learned the hard way and offers his commentary on some common design practices.
Primary Topics of Discussion
- Some relevant provisions of the building codes and design standards
- The complex nature of designing cold-formed steel elements
- Lateral bracing for cold-formed C- and Z-shaped flexural members
Learning Outcomes
- Learn how cold-formed steel framing design differs from that of structural steel
- Understand the current way to identify various cold-formed steel products
- Become familiar with the differences in the design details for load-bearing and non-bearing steel studs
- Know how to use the manufacturers' load tables properly
- Find out why lateral and torsional bracing is critical for the performance of roof purlins
Webinar Benefits
- Understand how today's design practices for cold-formed steel framing differ from those used decades ago
- Know which deflection criteria, which go beyond the minimum values provided in the building codes, may be appropriate for roof purlins used in metal building systems
- Learn about the fasteners and connections used with cold-formed steel
- Study the latest design details recommended for cold-formed floor joists
- Examine the pitfalls or a common method for supporting steel studs along ribbon windows
Intended Audience
- Structural engineers
- Civil engineers
- Building owners
Webinar Outline
- Introduction to cold-formed steel framing
- Some relevant provisions of the building codes and design standards
- Typical failure modes of C- and Z- sections
- Specifying light-gauge steel studs
- Specifying cold-formed C- and Z- sections used as floor and roof flexural members
- The importance of lateral bracing
- Some failures that could have been avoided
- Conclusion and questions