bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - 3076783; 3076783; service provider - earth work in excavation all kind of soil by mechanical means (hydraulic excavator)/manual means over areas (exceeding 30cm in depth 1.5m in width as well as 10 sqm on plan) including disposal of excavated earth, lead up to 50m and lift up to 1.5m disposed earth to be levelled and neatly dressed.all kind of soil. , providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering-all work up to plinth level: 1:4:8 (1 cement: 4 coarse sand :8 graded stone aggregate 40 mm nominal size). , providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering-all work up to plinth level: 1:2:4 (1 cement: 2 coarse sand :4 graded stone aggregate 20 mm nominal size). , providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - all work up to plinth level : 1:1.5:3 (1 cement : 1.5 coarse sand (zone-iii): 3 graded stoneaggregate 20 mm nominal size) , steel reinforcement for r.c.c. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level : thermo-mechanically treated bars of grade fe-500d or more. , structural steel work riveted, bolted or welded in built-up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete. , brick work with fly ash bricks (non modular) of class designation 7.5 in foundation and plinth in: ement mortar 1:6 (1 cement : 6 coarse sand) , centering and shuttering including strutting, propping etc. and removal of form forfoundations, footings, bases of columns, etc. for mass concrete , random rubble masonry with hard stone in foundation and plinth including leveling up with cement concrete 1:6:12 (1 cement : 6 coarse sand :12 graded stone aggregate 20 mm nominal size) at plinth level with:cement mortar 1:6 ( 1 cement : 6 coarse sand) , 12 mm cement plaster of mix 1:6 (1 cement : 6 coarse sand) , hiring j.c.b machine with driver/operator, fuel all t&p labour etc. for propercompletion of workas per direction of engineer-in-charge