Journal of Failure Analysis and Prevention

, Volume 11, Issue 3, pp 208–214 | Cite as

High School Gymnasium Roof Truss Support Collapse

  • Aaron Tanzer
Case History---Peer-Reviewed


Roof truss supports from a high school gymnasium were evaluated after the roof collapsed under a heavy load of snow. The roof collapsed when the truss supports buckled. Three significant structural deficiencies were identified during the evaluation: (1) Truss supports were not gusseted, allowing for side-to-side movement. (2) Yield strength of the support was 9% below the minimum specified yield strength specified for the base material, ASTM A36. (3) Full penetration was not achieved on the butt weld between the truss and support.


Bending Compression Distortion Ductile fracture Failure analysis Fusion welded joints Mechanical behavior 

Copyright information

© ASM International 2011

Authors and Affiliations

  1. 1.Lehigh Testing Laboratories, Inc.New CastleUSA

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