Repairing of leakage to the roof top of Telephone Exchange building at Soro under Balasore SSA

Amount

Making Khurras 45X45cm with average minimum thickness of 5 cm cement concrete 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate of 20mm mnominal size ), finished with 12 mm cement palster 1:3 ( 1 cement : 3 coarse sand ) and a coat of neat cement rounding the edges and making and finishing the outlet complete including dismantaling existing Khurra and disposal of the unserviciable material upto lead of 50 Metre

Providing and fixing on wall face unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i)Single socketed pipes:

110 mm diameter

Providing and fixing on wall face unplasticised - PVC moulded fittings/ accessories for unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A including jointing with seal ring conforming to IS :5382 leaving 10 mm gap for thermal expansion.

Bend 87.5° : 75 mm bend

Shoe (Plain) : 110 mm Shoe

Providing and fixing unplasticised -PVC pipe clips of approved design to unplasticised - PVC rain water pipes by means of 50x50x50 mm hardwood plugs, screwed with M.S. screws of required length including cutting brick work and fixing in cement mortar 1:4 (1 cement : 4 coarse sand) and making good the wall etc. complete.

Providing and laying four courses water proofing treatment with bitumen felt over roofs consisting of first and third courses of blown bitumen 85/25 or 90/15 conforming to IS : 702 applied hot @ 1.45 Kg per square metre of area for each course, second course of roofing felt type 3 grade-I (hessian based self finished bitumen felt) and fourth and final course of stone grit 6 mm and down size or pea sized gravel spread at 6 cubic decimeter per square metre, including preparation of surface but excluding grading complete with :

Bitumen felt (hessian base) type 3 grade I conforming to IS : 1322

Deduct for omitting in water proofing treatment final course of spreading stone grit 6 mm down size or pea sized gravel :

at 6 cudm per sqm

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. This includes jointing of pipes & fittings with one step CPVC solvent cement and testing of joints complete as per direction of Engineer in Charge. : Internal work - Exposed on wall

25 mm nominal outer dia .Pipes.

Cleaning the top of roof surface by removing the old damaged bitumen feltsand making the roof top surface ready to receive the fresh water proofing treatment etc. including dispossal of rubbish beyond municipal area complete as per direction of Engineer in charge.

Providing & fixing 25mm nominal bore CPVC Gate valve of approved brand all complete as per the direction of Engineer-in-charge .

SUDEEP BOSE