Each bolster supports supports a horizontal reinforced concrete beam that extends 15 feet beyond the bolster. The beams are connected to one another by concrete joists, each 4 inches wide. Together the beams and joists create a rectilinear grid.
Each bolster supports supports ahorizontal reinforced concrete beam that extends 15 feetbeyond the bolster. The beams are connected to one anotherby concrete joists, each 4 inches wide. Together the beamsand joists create a rectilinear grid.