tender for procurement of medical books at learning resource center - earth work in excavation by mechanical means ( hydraulic excavator ) / manual means over areas ( exceeding 30cm in depth , 1.5 m in width as well as 10sqm on plan ) including getting out and disposal of excavated earth, lead upto 50m and lift upto 1.5m, as directed by engineer incharge.2.6.1 all kind of soil. 2 providing and laying cement concrete of specified grade excluding the cost of centering and shuttering-all work upto plinth level ( 4.1.4 ) 1:3:6 ( 1 cement: 3coarse sand:6 graded stone aggregate 20 mm normal size ) 3 providing and laying cement concrete of specified grade excluding the cost of centering and shuttering-all work upto plinth level ( 4.1.1 ) 1:1.5:3 ( 1 cement: 1.5coarse sand:3 graded stone aggregate 20mm normal size ) 4 laying reinforcement cement concrete pipe np4 / prestressed concrete pipe on first class bedding in single row. ( laying reinforced cement concrete pipe for culvers on first class bedding of granular materials in single row including fixing collar with cement mortar1:2 but excluding excavation, protection works, backfilling, concrete and masonry works in head walls and parapets. ) np3 pipe ( ii ) 900mm diameter. 5 random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6 :12 ( 1 cement :6 coarse sand : 12 graded stone aggregate 20mm nominal size ) at plinth level with: 7.1.1 cement mortar 1:6 ( 1 cement : 6 coarse sand ) 6 12 mm cement plaster of mix 13.1.1, 1:4 ( 1 cement: 4 fine sand ) 7 neat cement punning 8 boulder apron laid in wire crates ( providing and laying of boulder apron laid in wire crates made with4mm dia gi wire conforming to is :280 & is : 4826 in 100mm 100mm mesh ( weaved diagonally ) including 10% extra for laps and joints laid with stone boulder weighing not less than 40kg each. )