excavation for structures : earth work in excavation of foundation of structures as per drawing and technical specification ,including setting out,construction of shoring and bracing,removal of stumps and other deleterious matter,dressing of sides and bottom and backfilling with approved material,complete as per clause 304 of morth specifications of road and bridge works including all accessories,complete as per direction of engineer in charge .
i. in ordinary soil a) manual means
a) without dewatering
i) upto 3m depth