Numbers and Titles



Includesmoles and tunnel-boring machines. rock excavation by boring machine, drill, and blast. robotic processes.
See31 23 00 for excavation and fill. 31 50 00 for excavation support and protection. 31 72 00 for tunnel support systems. 33 05 07 for trenchless installation of utility piping
31 71 13Shield Driving Tunnel Excavation
31 71 16Tunnel Excavation by Drilling and Blasting
31 71 19Tunnel Excavation by Tunnel Boring Machine
31 71 23Tunneling by Cut and Cover