Repair and waterproofing work for the roofs of residences K-3 K-4 K-5 and K-6 located at Raj Bhavan premises

Disconnecting damaged overhead/terrace PVC water storage tank of any size from water supply line and removing from the terrace including shifting at ground level as per direction of Engineer-in-charge.D.S.R 14.79

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - chargeNominal concrete 1:4:8 or leaner mix (including equivalent design mix) D.S.R.15.2.2

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering -all work up to plinth level 1: 4 : 8 (1 cement : 4 coarse sand : 8 graded stone ballast aggregate 40 mm. nominal size) (zone-III) Ref. to DSR 4.1.8

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead.DSR 15.56

Providing and laying APP (Atactic Polypropylene Polymer) modified prefabricated five layer 3 mm thick water proofing membrane, black finished reinforced with non-woven polyester matt consisting of a coat of bitumen primer for bitumen membrane @ 0.40 litre/sqm by the same membrane manufacture of density at 25°C, 0.87-0.89 kg/ litre and viscocity 70-160 cps. Over the primer coat the layer of membrane shall be laid using Butane Torch and sealing all joints etc, and preparing the surface complete. The vital physical and chemical parameters of the membrane shall be as under : Joint strength in longitudinal and transverse direction at 23°C as 650/ 450N/ 5cm. Tear strength in longitudinal and transverse direction as 300/250N. 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 membrane shall be got done through the authorised applicator of the manufacturer of membrane 3 mm thick DSR 14.91.1

Providing and laying vitrified floor tiles in different sizes (thickness to be specified by the manufacturer) with water absorption less than .08% and conforming to IS: 15622, of approved make, in all colours and shades, laid on 20mm thick cement mortar 1:4 (1 cement : 4 coarse sand), jointing with grey cement slurry @ 3.3 kg/ sqm including grouting the joints with white cement and matching pigments etc., complete Size of Tile 600x600 mm 11.41.2

Providing and laying Vitrified tiles in different sizes (thickness to be specified by the manufacturer), with water absorption less than 0.08% and conforming to IS: 15622, of approved brand & manufacturer, in all colours and shade, in skirting, riser of steps, laid with cement based high polymer modified quick set tile adhesive (water based) conforming to IS: 15477, in average 6 mm thickness, including grouting of joints (Payment for grouting of joints to be made separately). Size of Tile 600x600 mm DSR 11.47.2

12 mm thick Cement plaster in single coat on wall with 1:4 (1 Cement :4 Coarse sand) mortar finished even and smooth including rounded angle upto 80 mm also including supply of all material labour T&P etc. required for proper completion of the work.DSR 13.4.1

Removing white on colour wash by scrapping and sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete.DSR 13.88

Providing and applying white cement based putty of average thickness 1mm of approved brand and manufacturer , over the plastered wall surface to prepare the surface even and smooth complete. Item no.-13.80 DSR