annual repair and maintenance of najafgarh drain restoration and construction of different patches of dilapidated and broken boundary wall between rd 45316m to rd 40680m of najafgarh drain- 1 earth work in excavation by mechanical means (hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10sqm on plan) includinggetting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by engineer-in-charge.all kinds of soil 2 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:3:6 (1 cement : 3 coarse sand (zone-iii) : 6 graded stone aggregate 20 mm nominal size). 3 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 stone aggregate 20 mm nominal size). 4 reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. above plinth level up to floor five level, excluding cost of centering, shuttering, finishing and reinforcement : 1:1.5:3 (1 cement : 1.5 coarse sand(zone-iii): 3 graded stone aggregate 20 mm nominal size). 5 centering and shuttering including strutting, propping etc. and removal of form for all heights : foundations, footings, bases of columns, etc. for mass concrete 6 centering and shuttering including strutting, propping etc. and removal of form for all heights : lintels, beams, plinth beams, girders, bressumers and cantilevers 7 centering and shuttering including strutting, propping etc. and removal of form for all heights : columns, pillars, piers, abutments, posts and struts 8 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. 9 brick work with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in foundation and plinth in: cement mortar 1:6 (1 cement : 6 coarse sand) 10 brick work with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor v level in all shapes and sizes in : cement mortar 1:6 (1 cement : 6 coarse sand) 11 random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12graded stone aggregate 20 mm nominal size) upto plinth level with : cement mortar 1:6 (1 cement : 6 coarse sand) 12 12 mm cement plaster of mix : 1:4 (1 cement: 4 coarse sand) 13 15 mm cement plaster on rough side of single or half brick wall of mix: 1:4 (1 cement: 4 coarse sand) 14 finishing walls with water proofing cement paint of required shade : new work (two or more coats applied @ 3.84 kg/10 sqm) 15 pointing on stone work with cement mortar 1:3 (1 cement : 3 fine sand) : raised and cut pointing 16 steel work welded in built up sections/ framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required. in gratings, frames, guard bar, ladder, railings, brackets, gates and similar works