<p>Here roof piping machine detail including section plan<strong> </strong> <em>Pipe Roofing</em> are commonly used in excavations and tunneling works which require minimal disruption to major services and roads. in this drawing shown different level of pipe fittings the technique of re-reinforcing the ground ahead of the tunnel face to ensure that the excavation can proceed safely until permanent support structures can be installed. for more details of Roof piping machine detail including section plan download this file.</p>