Water Proofing Treatment of RB Building of Under Sub Division Shahdol.

Providing and applying UV Stable polyurethane liquid water proofing membrane having Sun Reflectivity Index (SRI) of 106 on top of concrete roof / Retainning wall / Old layer of bituminous surfaces / Polyurethane foam and metal surfaces in three or more coats @20kg/ 10 sqm consisting of a coat of two component epoxy primer in ratio of 1:3(one part of resin and 3 parts of hardner) at a consumption of 2kg/10sqm. the vital physical and chemical parameters shall be as under : Min Elongation at break of 600% as per ASTM D412 and tensile strength of 3.0 N/mm2 as per ASTM D412. The operation shall be carried out after scrapping and properly cleaning the surface to remove loose particles with wire brushes, complete in all respect as recommended by the manufacturer’s specification and direction of Engineer-in-Charge

Providing and laying six courses water proofing treatment with bitumen felt over roofs consisting of first, third and fifth course of blown bitumen 85/25 or 90/15 conforming to IS : 702 applied hot @ 1.45, 1.20 and 1.45 Kg per square metre of area respectively, second and fourth courses of roofing felt type 3 grade I conforming to IS : 1322 (Hessian based self finished bitumen felt) conforming to IS : 1322 and sixth and final course ofstone grit 6 mm and down size or pea sized gravel spread at 6 cubic dm per sqm including preparation of surface butexcluding grading, complete. (With five yearsservice gurantee).

Grading roof for receiving water proofing treatment with 22.14.1 Cement concrete 1:2:4 (1 cement : 2 sand : 4 graded stone aggregate 20 mm nominal size)

Cement mortar 1:3 (1 cement : 3 sand)

Cement mortar 1:4 (1cement : 4 sand)

Water proofing treatment over Roof, Wall, Chajjas,, Balcony with fibre glass mesh and Sealer coat at leakage/ seepage area consisting of (i) Surface preparation roughening of surface, opening cracks in ‘V’ groove in size of 5mmX10mm (WXD), filling of cracks with putty with laying fiber glass mesh, Cleaning of surface by scrubbing with steel wire/Nylon brush. Removing all dust particles and washing with adequate water to clean completely. (ii) Providing and applying 1st coat of fibre glass mesh (minimum thicknes 70-80 micron) and two component flexible waterproof and protective modified mortar, dry powder 80% chemical 20% acrylic resin having 30% solid contents) with mix proportion of part 1 and 2 with proper mixing with laying of fiber glass mesh (of weaving size of 10X10 yarn/inch duly coated with alkaline resistant polymer). Allow the coating to air cure for minimum 2 Hrs. After two hours of 1st coat applying 2nd coat (minimum thickness 100 micron) of fibre glass mesh of with mix proporation of part 1 and 2 with proper mixing. Allow the coating to air cure for minimum 2 hrs. Consumption of two component should beacrylic resin @17.90 kg for 10 sqm area or as per manufacture instructions. (After two coats of diamond shield, surface is to be cured properly minimum for 4 hrs. before application of thirdcoat). (iii) Providing and applying 1st coat of sealer coat 50-60 micron (single component Hight build elastomeric, fixable pure acrylic waterproofing membrane having solidcontent of 65%) and allow it to air cure for 4Hrs. minimum. After two hours minimum of1st coat applying 2nd and finals coat 120-140 micron of sealer coat and allow it to air cure for 4 Hrs mimimum. Consumption of Sealer coat should be @ 5.40 kg per 10 sqm area. (iv) The treated area should be cure with water for 48 hrs. by flooding the surface. (v) The final appearance of the coating willbe milky white. All above operations to be done in order.(five years guarantee)

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding including cost of binding wire all wastages and overlaps, couplers (overlaps shall be provided as per requirement of IS 13920 for ductile detalingIS 456 RCC Design & SP 34 Reinforcement detailing ) etc. complete . (Note:- 1. Spacer bars (chairs) shall be paid separately as shown in the drawing and as per direction of engineer in charge. 2. No extra payment shall be done for overlaps and/or couplers. 3. Couplers shall be conforming to IS code on “Reinforcement Couplers for Mechanical Splices of Bars for Concrete Reinforcement - Specification”) 5.16.3 Thermo-Mechanically Treated bars.FE 500 D or more conforming to IS 1786