spray painting of ms chemical racks and cupboard shutters etc in environmental lab in main building at nbri, lucknow. - earth work in excavation by mechanical means ( hydraulic excavator ) / manual means in foundation trenches or drains ( not exceeding 1.5 m in width or 10 sqm on plan ) , including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. all kinds of soil. 2 filling available excavated earthexcluding rock ) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m. => limited