The lightweight, aluminum Octagon Box is comprised of standard Build-A-Box aluminum panels, pinned in exclusive 135° angle vertical posts. The result is a safe, lightweight, “manhole shield” that is ...
Conestoga-Rovers & Associates (CRA), of Canandaigua, NY, recently installed six new precast concrete manholes at an existing shopping center in Allen Park, MI. Due to the deep grade that the manholes ...