Underpinning. Any excavation for footings, piers, mass columns, sumps and pits or work of similar nature adjacent to or integral with existing structures requiring the use of tight wood sheeting or steel sheet piling, which excavation extends five (5) feet or more below the lowest basement or sub-basement levels immediately adjacent thereto and which excavation is performed by hand methods and disposed of by a bucket and line, either hand power operated or shoveled out by overhead stages, shall be classified and performed as underpinning work using caisson workers with the applicable rate of pay.
Underpinning. Any excavation for footings, piers, mass columns, sumps and pits or work of similar na- ture adjacent to or integral with existing structures requiring the use of tight wood sheeting or steel sheet piling, which excavation extends five (5) feet or more below the lowest basement or sub-basement levels immediately adjacent thereto and which exca- vation is performed by hand methods and disposed of by a bucket and line, either hand power operated or shoveled out by overhead stages, shall be classi- fied and performed as underpinning work using cais- son workers with the applicable rate of pay.
Underpinning
