Public Works Department-PWD has published Waterproofing Of Roofs By Way Of Providing New Gi Sheets App Membrane And Tar Felting At J K House Rajaji Marg New Delhi. Submission Date for this Tender is 17-08-2020. Water Purifier Tenders in Delhi Delhi. Bidders can get complete Tender details and download the document.
Name of Work:- Waterproofing of roofs by wayof providing nw GI sheets, APP membrane and tarfelting at J K House,Rajaji Marg, New Delhi | |||||
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S.No. | Item Description | Item Code / Make | Quantity | Units | |
1 | 1 | Dismantling of old damaged AC/GI sheets and disposal of the same within 50 mtr. Lead. | 158 | sqm | |
2 | 2 | Providing fixing Asbestos cement sheets roofing 6mm thik & fixing with GI J or L hooks bolts & nuts 8mm dia GI plain & bitumen washers complete excl. cost of purlins, rafters & trusses. | 65 | sqm | |
3 | 3 | Providing corrugated GS sheets roofing incl. vertical/curved surface fixed with polymer coated J or L hooks, bolts & nuts 8mm dia with bitumen & GI limpet washers filled with white lead incl. a coat of stel primer 0.63mm thick. | 158 | sqm | |
4 | 4 | Providing and laying four courses water proofing treatment with bitumenfelt over roofs consisting of first and third courses of blown bitumen\n85/25 or 90/15 conforming to 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/sqm of area for each course, second course of roofing felt type 3 grade-I (Hessian based self finished bitumen felt) and fourth & final course of stone grit 6mm & down size or pea-sized gravel spread at 6 cubic decimeters per square metre including\npreparation of surface but excluding grading complete with: Bitumen felt (Hessian based) type 3grade I conforming to Is 1322. | 231 | sqm | |
5 | 5 | Providing and laying APP (Atactic Poly Propylene Polymer ) modified prefabricated five layer water proofing membrane, black finishing reinforced with glass fibre mat consisting of a coat of bitumen primer forbitumen membrane @ 0.40 ltr/sq. mt. by the same membrane manufacture of density at 25°C, 0.87- 0.89 kg/ltr and viscosity 70-160 cps. Over theprimer coat the layer of membrane shall be laid using Butane torch and sealing all joints etc., and preparing the surface complete. The vital\nphysical and chemical parameters of the membrane shall be as under: Softening point of membrane not less than 150°C. Cold flexibility shall be upto -2°C when tested in accordance with ASTM, D - 5147. The laying of\nmembrane shall be got done through the authorized applicator of the manufacture of membrane.With glass fibre matt: Joint strength in longitudinal and transverse direction at 23°C as 350/300 N/ 5cm. Tear strength in\nlongitudinal and transverse direction as 60/80N.matt: Joint strength in longitudinal and transverse direction at 23°C as 650/450 N/ 5cm. Tear strength in longitudinal and transverse\ndirection as 300/250N | 180 | sqm | |
6 | 6 | Repairs to plaster of thickness 12mm to 20 mm in patches of areas 2.5 sqm . and under inclu. Cutting the patch in proper shape,raking out joints and preparing the surface complete inclu. disposal to the dumping site within 50 m lead (1:4 mix) | 36 | sqm | |
7 | 7 | Cleaning of roof top by engaging labour for cutting plants, removing leaves and disposal of the same within 50 mtr lead. | 30 | No | |
8 | 8 | Providing gola 75x75mm in cement concrete 1:2:4 (1cement 2 coarse sand 4 graded stone agg: 10mm & down incl. finishing with cement mortar 1:3 (1cement 3 fine sand) | 80 | Rm | |
9 | 9 | Removal of waste material and disposal beyond municipal limits by way of mechanical transport. | 5 | trip |
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