Class Codes & Rates:

 Code 6252 is applied to specialist contractors engaged in all operations involving shaft sinking for bridge footings, piers or foundations. The operations involve the removal of earth from a hole with a relatively small diameter and usually from a considerable depth as compared with its diameter. To prevent cave-ins, wooden or steel sheeting may be driven into the shaft by hand or power apparatus. The classification contemplates these operations as well as any pile driving and concrete work connected herewith. Code 6252 also is applied to specialist contractors engaged in all operations involving pneumatic caisson work for bridge or pier foundations.