The post-tensioned slabs of One Hundred, a 36-story building under construction in St. Louis, were a handful for contractor Clayco, thanks to setbacks and irregular jagged slab edges that create a sawtooth footprint with no two floor plates alike.
The varying geometry of both floor slabs and perimeter columns requires precise positioning. “After our crews make the mold for the concrete, they scan and process the data,” says Faith Feng, technology integration manager for Clayco. “We then overlay the model with the point cloud so that we can go in and see the embeds, see where a wall is currently installed. We’ll go really into detail.”