A Newsletter from CROSS-US containing reports on structural safety issues.
Note: this Newsletter was published by CROSS (Confidential Reporting on Structural Safety). Since March 2021, Confidential Reporting on Structural Safety is renamed Collaborative Reporting for Safer Structures (CROSS).
Newsletter content
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.
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.
Under slab perimeter drain failure
Local homeowners installed perimeter drains and sump pumps after high water tables caused water leakage into their basements.
Structural engineer faces ethical challenge
A structural engineer performing a delegated design faced an ethical dilemma when discovering what is believed to be errors in the base structural design performed by others.
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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