This case involves a plumber who was called to repair a corroded pipe in a maintenance shed on a commercial property. The plumber attempted to enter the shed but found that the rolling door would not open because the wire cable had become tangled. He attempted to loosen it with one hand while holding up the door with the other. The door was too heavy for him to hold up and came down on his foot. The impact caused a severe injury to the plumber’s foot leaving him permanently disabled and unable to work. It was alleged that the contractor who installed the door used the wrong type of door for the space. An expert in rolling door installation was sought to review the case and determine if there was any negligence in the installation.