Tender For Remaining Repairing Work At Fire Office - 1 Grading roof for water proofing treatment with water proofing compound Cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) Cement mortar 1:4 (1cement : 4 coarse sand) 2 Centring and shuttering with plywood or steel sheet upto two stories ( each story of height upto 3.5 metre from floor level) including strutting, propping etc. and removal of form for :Foundations, footings, bases of columns, etc. for mass concrete 3 Reinforcement for R.C.C. work at all levels including straightening, cutting, bending, placing in position and binding all complete.Thermo-Mechanically Treated bars. 4 Reinforced cement concrete work in beams, suspended floors, roofs having slope upto 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases and spiral stair cases upto two stories excluding the cost of centring, shuttering, finishing and reinforcement: M-20 Grade Concrete (1:1½:3 (1 cement : 1½ coarse sand : 3 graded stone aggregate 20 mm nominal size) -As per design mix) 5 Providing and laying lean cement concrete 1:4:8 in Sub- base over a prepared sub-grade with coarse and fine aggregate conforming to IS: 383, the size of coarse aggregate not exceeding 25 mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per table 600-1, cement content not to be less than 150 kg/ cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, laid with a paver with electronic sensor, compacting with 8-10 tonnes vibratory roller, finishing and curing complete as per clause 601, 112 of MoRT&H specification including all material, labour, machinery, lighting, guarding and maintenance of diversion. 6 Providing and laying un-reinforced, plain cement concrete mix with Concrete Mixer & vibrator pavement over a prepared sub base with 43 grade cement , coarse and fine aggregate conforming to IS: 383,maximum size of coarse aggregate not exceeding 25 mm, mixed as per approved mix design, laid, spread, compacted and finished in a continuous operation including provision of contraction, expansion, construction and longitudinal joints etc including all material, labour, machinery, lighting, guarding and maintenance of diversion.PCC M-20 7 Random rubble masonry with hard stone in foundation and plinth :Cement mortar 1:6 (1 cement : 6 coarse sand) Extra for random rubble masonry with hard stone in superstructure above plinth level and upto two stories 8 Providing and laying granular sub-base material having P.I.not more than 6, including spreading in layers not exceeding 150 mm compacted thicknessand consolidation by 8-10 tonne power rollerto required camber and grade including cost of water and hire charges of machinery, including T&P with all lead (Compacted thickness to be measured).as per MORTH specification table 400-1, 400-2 : For grading-III with CBR value not less than 20.to attain 100% proctor density.
