About the author  ⁄ Geoffrey A. Laurin

Geoff A. Laurin, GC, NACHI is a Principal at Engineered Research Group, Inc. located near San Francisco, California. He can be reached at geoff@ergroup.org.

Recent fatalities associated with failed structural building elements have generated discussion about actual causation and whether building code changes are required. These failures have also increased the demand for architectural and structural inspections on similar existing elements.

The authors are consultants who frequently forensically diagnose alleged construction defect claims. Clients are typically developers, designers, contractors, insurance agencies, attorneys, manufacturers or building owners. This background provides a unique perspective on the relative risk to the structural engineer.

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Starting in 2008, members of the project team, along with others, performed tests to show that the American Concrete Institute (ACI) 318-11 Appendix D concrete shear capacities for steel anchor bolts with small edge distances connected to wood sill plates were extremely low compared to actual tested values.

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STRUCTURE magazine