Public Works Department Tender

Finishing the top of roof with one course of machine pressed tiles of size 230mm x 230mm x 20mm of approved quality set in Cement Mortar 1:3 (One Cement and Three M-Sand) 12mm thick mixed with water proofing compound conforming to ISS at 2% by weight of cement used and the joints pointed neatly to full depth of tiles with the same cement mortar mixed with red oxide and water proofing compound including curing etc., complete complying with standard specification and as directed by the departmental officers

Old Terrace tile surface repair with UV Resistant hybrid waterproofing coating - Providing and Applying Polyurethane hybrid liquid applied GRIHA certified Waterproofing coating with flutyne protection technology, single component, cold applied, water based acrylic and UV resistant water proofing treatment to the Existing Roof having Tile or any non-porous surface applied @ 1.5 l/m2 in 2 coats to achieve 1mm DFT, having tensile strength with 45 gsm glass fibre mesh 4N/mm2 confirming to ASTM D 412; Elongation at break ≥ 300% and Crack bridging ability up to 3mm, SRI Index 106 as per ASTM E 1980-01, Water permeability @5 bar – Nil as per EN12390- 8:2019, including surface preparation, priming the surface with single component high-performance waterborne tile primer which is suitable for non - porous surface at a rate of 0.14 L/m2 and spreading 45 gsm glass fibre mesh of 2.5 mm x 2.5 mm sandwiched between the first and second coat completely as per specification. The finished cost to include surface preparation, making coving at Junction, treatment of cracks completely as per specification.

Renewing and fixing in position best approved of BIS quality 110mm dia PVC rain water down fall pipes having a pressure of 4 kg. / sq.cm including cost of necessry PVC shoe, PVC bend, cast iron gratings of required diameter and special clamps, brass screws, nails, etc., and fixing of cast iron gratings at junction of parapet and the RCC roof slab including finishing neatly etc., complete. The rate shall be inclusive of cast of removable cast iron grating. The PVC pipe shall be fixed in wall with special type of "U" clamp at the centre of the pipe line in addition to those for more than 3.0 metre pipe length, etc., complete complying with standard specification.