A roof collapse can be a serious/expensive structural failure. The cause of the failure is often a very important part of the recovery process.
TSA's thorough on-site investigation showed evidence that the tenant made a very poor choice to cut the bottom chord of a roof joist to install his lift.
TSA work included the structural condition survey, field measuring/documenting the existing structure (no existing drawings were available), designing repairs, and providing construction phase engineering services.
