excavation in foundation trenches etc. in all kinds of soil such as pick work, jumper work including chiseling / wedging etc. with all lifts stacking the excavated soil not more than 3 metres clear from the edge of excavation and then returning the stacked soil in 15 cm layers, when required into plinth sides of foundation etc. consolidating each deposited layer by ramming and watering and then disposing of all surplus excavated earth as directed with all leads and lifts of material as directed by the engineer-in-charge.