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Failures of cold formed steel floor systems during construction
This report describes numerous collapses during construction of cold formed steel floor systems caused by lack of bracing/fastening and overloading of an incomplete structure.
Steel column erection anchoring connection failure injured worker
This report describes how a construction worker was injured during the erection of a steel column due to shortcomings in erection procedures and inadequacies in a column base connection.
Roof collapse of warehouse structure under rainwater ponding
This report highlights the structural risk caused by rainwater ponding on relatively flat roofs.
Bottom-chord bracing for metal plate-connected wood trusses used in light-commercial applications
Concerns regarding metal plate-connected wood trusses in light-commercial construction when subject to net uplift.
Inadequate design and quality assurance on a mandatory seismic retrofit project
A tenant's structural engineer discovers widespread design and related quality problems on a mandatory seismic retrofit project.
Failure of existing long-span wood roof truss following installation of new roof-top HVAC units
Failure of an existing long-span wood roof truss following installation of new roof-top Heating, Ventilating, and Air Conditioning (HVAC) units offers lessons in the special challenges of renovations to existing buildings.
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Mandatory seismic retrofit construction with quality control problems
Standard seismic retrofit details were used for a building with a non-standard foundation, resulting in inadequate connection of structural shear walls to foundations.