excavation in foundations in ordinary soil (loam clay or sand) including lift upto 1.5 m.(5 fts.) and lead upto 30m.(100 fts.) & including filling. watering and ramming of excavated earth into the trenches or into the space between the building and the sides of foundation trenches or into the plinth and removal and disposal of surplus earth as directed by the engineer-incharges upto a distance of 30 m.(100 fts.) from the foundation trenches.