CONSTRUCTION OF BOUNDARY MASONRY WALL CHAINLINK AT SHIITAKE MUSHROOM PRODUCTION UNIT UPPER SHILLONG

Earthwork in excavation by manual means upto a depth of 2m below the existing ground level for foundation trenches of foundations, footings of column/ walls, retaining walls, septic tank etc. including bailing out water where necessary and removal of surplus earth with all lead and lifts as directed and specified for the following classification of soils (b) In ordinary rock (Soft rock/ medium rock/ hard shale)

Plain cement concrete works in foundation bed for footing steps, walls, brick works etc below plinth level as directed and specified including dewatering if necessary, and curing complete (shuttering where necessary shall be measured and paid seperately). (b) 1:3:6(1 cement: 3 coarse sand: 6 graded stone aggregate 20mm nominal size) (rate inclusive of carriage)

Providing regular stone masonry in retaining walls etc. with coursed, hammer dressed or blunt chisel dressed stones of heavy section not less than 25 cm x 25 cm x 30 cm with proper key stone each not less than 25 cm x 25 cm x 75 cm long set in cement mortar 1:6 (1-cement, 6-sand) including filling of trenches and providing of weep holes at 1.20 to 1.50 metres apart staggered .(rate inclusive of carriage)

Providing boulder or stone filling with boulders or stones 15 cm size, 60 cm wide behind the retaining wall etc. complete as directed.(rate inclusive of carriage)

Supplying, fitting and fixing in position reinforcement bars up to 1st floor level, conforming to relevant I.S Code for RCC work/R.B walling including straightening, cleaning, cutting and bending to proper shapes and length as per details, supplying and binding with 20 G annealed black wire and placing in position with proper blocks, support, chairs, spacers etc complete. (Rates inclusive of all wastage, lappage, hooks, chairs, anchorage etc and no measurement for the same is required). (b) High Yield Strength Deformed bars or Tor Bars

Providing and laying in position specified grade of reinforced cement concrete, excluding cost of centering, shuttering, finishing and reinforcement - All works upto plinth level: (b) M20 or 1:1 1/2:3 (1 cement:1 1/2 coarse sand: 3 graded stone aggregate 20mm nominal size)(rate inclusive of carriage)

Reinforced Cement Concrete Work in beams, slabs, roofs having slope upto 15° , landing, balconies, shelves, chajjas lintels, bands, plain window sills, staircases and spiral stair cases above plinth level up to first floor level, excluding the cost of centering, shutterting, finishing and reinforcement. (b) M20 or 1:1 1/2:3 (1 cement:1 1/2 coarse sand: 3 graded stone aggregate 20mm nominal size) (rate inclusive of carriage)

(a) Foundations, footings, bases of columns, etc for mass concrete (using steel)