The excessive loads handled by the overhead crane system and the relatively weak load bearing soils, added to the already failing foundation system on this structure. There is an obvious deflection in the roof system just above the air compressor.
A massive excavation was completed to expose the load bearing columns and intersecting grade beams. The overhead crane was loaded to its maximum capacity and set above each pier location during the installation process.
The main structure was raised 1”-2” with select columns in the loading bay area being raised as much as 5.5”. Intersecting grade beams were subsequently piered and lifted to stabilize the entire system. Notice the alignment of the roof system after the lift.