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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.
Inappropriate material storage causes collapse of ceiling of a truck dock mezzanine
This report describes the collapse of an overloaded framed ceiling.
Channel slab roof deck collapse during reroofing
This report highlights the structural risk caused by machinery during reroof a project.
Roof collapse of warehouse structure under rainwater ponding
This report highlights the structural risk caused by rainwater ponding on relatively flat roofs.
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.
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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.