Detail of pipe support on floor and terrace plan is given in the 2D Autocad DWG drawing file. Height of parapet wall is 1200mm. Plumbing shaft size is 200 x 400 mm . Discharge pipe is given. A U-bolt is a bolt in the shape of the letter U with screw threads on both ends. U-bolts have primarily been used to support pipework, pipes through which fluids and gasses pass. Thanks for downloading Autocad 2D drawing file and other CAD program file from our website.