Piling and D- wall details of hospital building is given in this autocad DWG drawing file. A diaphragm wall (D-wall) is a reinforced concrete structure constructed in situ panel by panel. In the basement market D-walls are often used on congested sites, close to existing structures where the excavation depth and ground conditions would prove problematic for piled walls. Length and breadth are mentioned. Piling details are indicated by the letter P. Thank you for downloading the autocad file and other CAD program files from our cadbull website.