Casing. Use casing that is a metal shell of a thickness to withstand handling, internal and external pressures, and that is smooth and clean. Use casing in all materials that do not have sufficient strength to safely remain open and stable during and after excavation. Extract the casing at a slow uniform rate with pull in line with the center of the Compacted Aggregate Pier.
Appears in 2 contracts
Sources: Amendment to Contract, Amendment to Advertised Contract