Abstract: The writer is engaged by the Occupational Safety and Health Administration (OSHA) to study the National Bureau of Standards (NBS) report on the L'Ambiance Plaza Building collapse and develop supplemental information for ...

Abstract: A new stiffness matrix for the analysis of thin walled beams is derived. Starting from the principle of virtual displacements, an updated Lagrangian procedure for nonlinear analysis is developed. Inclusion of nonuniform ...

Abstract: A geometric stiffness matrix for a beam element has been derived in a related paper. The derived matrix implies quasitangential behavior of bending moments and semitangential behavior of torques. Use of this element matrix ...

Abstract: Progressive collapse is a situation in which a localized failure in a structure, caused by an abnormal load, triggers a cascade of failure affecting a major portion of the structure. Several buildings have collapsed in ...

Abstract: A fundamental aim of developing and applying nonlinear analysis is to improve the quality of design by providing the engineer with a more reliable prediction of the performance of a structural system that is under design ...

Abstract: Functional relationships between cross-sectional properties of standard sections are useful for preliminary design, and for automated optimization. Expressions which relate the area, moment of inertia, and the torsional ...

Abstract: The condition of the interior of a 3‐1/4‐in. steel cable after approximately 20 yrs in service is described. The cable studied was one of 21 bridge strands that support a very large radio telescope. It had suffered minor ...

Abstract: A design study of a three‐dimensional 22‐story frame is presented to demonstrate the use of second‐order inelastic analysis in load and resistance factor design. This study is a follow‐up to a set of low‐rise planar frame ...