Frame Stability

by Jerome S. B. Iffland, Iffland Kavanagh Waterbury PC, New, York, NY, USA,
Charles Birnstiel, Iffland Kavanagh Waterbury PC, New, York, NY, USA,

Document Type: Proceeding Paper

Part of: Materials and Member Behavior


The Chapter on Frame Stability of the Fourth Edition of the SSRC Guide provides guidance on use of several stability design procedures. These include Critical Load Concept, Second-Order Inelastic Analysis, P-Delta Methods, Merchant-Rankine Formula and Moment Amplification Method. Numerical examples are presented illustrating the use of these several methods and results are compared. It is concluded that all methods are safe. The P-Delta Method is the preferred design method to account for frame instability.

Subject Headings: Frames | Numerical methods | Structural stability | Load and resistance factor design | Moment (mechanics) | Safety | Writing skills | Mathematics

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