OUR ROLE: Engineered concept design, development and manufacture of two custom jig fixtures and upper load modules that removed precast concrete wall panels from a building façade and safely lowering them to ground level.
FACTS & FIGURES: Rated load capacity: 2112 kg
Two custom jig fixtures and an upper load module. One fixture to remove flat wall panels, the other for corner sections
Below the crane hook attachment for a roof mounted tower crane
Counter weight system to balance the loading/unloading operations
Crane scale to indicate when the grab has taken the weight of the panel
ABOUT THE PROJECT: A commercial and industrial structural steel fabrication company requested this custom lifting solution to assist with a high-rise condominium rebuilding project (they were expanding it from an 18-story building to a 55-story height). This custom fixture was used for removing the building’s old exoskeleton concrete wall. Safety was crucial on the project because of the high pedestrian traffic location of the building – safety and the perception of safety were both extremely important. ELS designed and manufactured two custom jigs – one to engage with flat wall sections and another one for corner sections. The jig fixtures needed to be below-the-crane-hook devices and were not to exceed the limits of the tower crane when loaded. Both jigs featured extended brackets that reached into and secured wall panels for removal from building to ground level. A center of gravity device was designed to accommodate both load and unload conditions. The company was very pleased with how safe and reliable the jig devices worked. They saved time, performed safe lifting operations and in the end, saved time and money.