Working Estimate for 390 TNGRHS at Sengulam Colony, Trichy under the Annual Maintenance of TNGRHS

Amount

Maintenance

Supplying and fixing of 110mm dia. PVC (SWR) pipe type B class conforming to IS 13592 and relevant specials including packing the joints with rubber lubricant fixing them into walls with necessary GI Bolts and Nuts with special clamp made of MS angle/Flat including cutting, bending (excluding the cost of MS angle/flat) holding wherever necessary and making good of the dismantled portion with necessary connections to sanitary fittings etc., complete complying with relevant standard specifications in all respects and as directed by the departmental officers.- 3m.

Chipping the external plastering to ceiling whereas required by using chipping machine to the full thickness without making damages to the concretre, identify the cracks from the concrete to treat seperately by stretching and prepare the cement mortar1:3, 10mm thick added with water proofing admixture (1 lit/m2) applying the same over the chipped area and finishing it neately and curing as directed by the departmental officers.

Special Ceiling plastering Removing the all scaled/loosed concrete or morter or reinforced structure remove all one dust by wine brush mixing the morter latex coating with cement morter 1:1/2 ratio etc., all complete and as directed by the departmental officers.

Plastering in C.M 1:3 (one of cement and three of Psand) 10mm thick for bottom of sunshade, ceiling in all floors, including scaffolding, curing ,finishing etc complete in all respects complying with relevant standard specification and as directed by the departmental officers.

White washing two coats using clean shell lime slaked including cost of lime, gum, blue, brushes, including scaffolding etc., complete in all respects. In all floors complying with relevant standard specifications & as directed by the departmental officers.

Supplying and fixing of PVC cylindrical vertical single piece moulded seamless HDPE cylindrical water storage tank of capacity 700 litres with top lid with provision for locking, free from cracks and warping to withstand the different weathering conditions and normal stress including cost and convayance to the work site and labour charges for fixing etc;.complete as directed by the departmental officers(storage tank should be got approved by the Exe.Engineer before use). The quality & brand should be got approved by the E.E.before use with ISI mark engraved on the PVC tank.

Supplying, laying, fixing and jointing the following PVC pipes as per ASTM D – 1785 of schedule 40 of wall thickness not less than the specified in IS 4985 suitable for plumbing by threading of wall thickness including the cost of suitable PVC/GI specials like Elbow, Tee reducers, Plug , union, bend, coupler, nipple etc., wherever required above ground level including the cost of Teflon tape, special clamps, GI Bolts and Nuts, nails, etc., fixing on wall to the proper gradient and alignment and redoing the chipped masonry after the pipes are laid etc., complying with relevant standard specifications & as directed by the departmental officers.

ASTM-D Schedule-40 Threaded PVC Pipe with necessary PVC / GI Specials - 25mm dia.

Sub Total

GST at 18%

M.Mohamed Hussain