REPAIRS, REPLACEMENT TO PPGL SHEETS, ROOF CEILING, ROOF TREATMENT AND SUNKEN REPAIR TO VARIOUS OTM AND MD ACCN AS PART OF DRY RESTORATION AND ECO FRIENDLY ASSET MANAGEMENT (DREAM) INCLUDING MISC WORKS IN THE AOR OF AGE B/R HAIG LINE

Taking down carefully existing unserviceable bitumen felt/ APP membrane including demolition of cement plaster/PCC padding (any number of layers of any thickness of cement plaster or PCC padding ) including demolition of PCC padding etc and removing of the rubbish to a distance not exceeding 500m from the building and depositing complete all as spd and directed.

M&L for rendering 10mm thick CM 1:3 on roof slab top and sides and concrete surfaces finished even and smooth without using extra cement, mixed with water proofing liquid @ 200 ml per 50 Kg of cement complete all as specified. Note: Water Proofing liquid shall be measured and paid separately.

M&L for providing plain cement concrete 1:2:4 type B-1 (using 20 mm graded stone aggregate) for filleting, benching, coping of chajjah top/junctions, padding concrete below roof treatment, etc slightly rounded or chamfered on edges wherever required including necessary form work/moulds etc including applying cement slurry on old RCC roof surface @2.50 Kg/Sqm complete all as specified and as directed .

Supply only integral liquid water proofing compound complete all as specified & as directed by Engineer-in-Charge.

M&L for water proofing on roof including flashing and junction of parapet, kerb, wall etc as under :- (a) Apply a uniform coat of primer @ 0.70 kg/sqm over cement plaster/ concrete surfaces. (b) Laying 3 mm thick and weighing not less than 3.6 kg/sqm Atactic Polypropylene Polymer (APP) modified bitumen-based prefabricated five layer water proofing membrane reinforced with non woven polyester matt black finished over compatible primer at 0.40 Ltr/sqm of density at 25 degree centigrade 0.87-0.89 kg/litre and viscosity 70-160 cps or cold sticker and torch application of APP membrane shall by torch application . The overlap shall be minimum 150 mm on the transverse direction and 100 mm on the longitudinal directions . (c) Apply two coats of bitumastic-aluminium paint over the membrane @ 0.15 Kg/ Sqm on APP membrane roof surfaces complete all as per manufacturer's instructions and as directed (d ) For vertical surfaces of parapet , wall etc APP membrane shall be tucked into groove and sealed with ewatherproof silicon sealant using gun ( Full width/depth of groove ) Note : (i) Work is to be executed at any height and situation. (ii) Performance Guaranty for Waterproofing shall be minimum 10 Years .

M & L providing and applying the plaster with single component ready to use repair mortar (SMART CARE REPAIR MORTAR or equivalent) and applying 15 mm average thickness in single layer and finishing with trowel with a bond coat SBR polymer and modified cementious bond coat @ 2.2 kg /Sqm of surface area including taking down existing roof treatment of any type and also taking down cement plaster or PCC paddinf of any layer etc brick/concrete surfaces, including raking out joints, hacking for key, scrubbing down with water etc., to receive further treatment, complete all as specified and as directed. Make: Asian Paints or equivalent in Sikka, Fosroc and STP Ltd. Note : (i) The application shall be executed on any type of surface and on horizontal/Vertical areas. (ii) The work shall be executed through authorised applicator of manufacturer only. (iii) Authrised Applicator shall be approved by GE before starting of work. (iv) All materials shall be procured directly form manufacturer. (v) The purchase voucher shall be produced to the Engineer-in-Charge for his verification of material.

M & L providing and applying Smartcare Dampproof Ultra, a fibre reinforced elastomeric liquid water proofing membrane formulated with reinforcing acrylic fibers having Sun Reflectivity Index (SRI) of 105 on horizontal/vertical surfaces of roof/wall/chajjas in multiple coats @ 2.0 litre/sqm to achieve a seamless waterproofing layer. Primary coat is self-priming coat of elastomeric waterproofing liquid (dilution with water in the ratio of 3:1, damp proof : water) and other coats to be applied undiluted. The coating needs to be reinforced with needle punched non woven Geotextile with minimum weight 50 GSM, to sandwiched between 2nd & 3rd coat of coating. The application shall be carried out after scrapping and properly cleaning the surface with mechanical grinder to remove loose particles dust vegetations etc complete with wire brushes and filling the depressions and cracks with crack seal and crack repair mortar and sealing around the spout pipes GI pipes any size in all respect as per the direction of Engineer-in-Charge. Make: SmartCare Damp Proof ultra of Asian Paints or equivalent in Berger/ Nerolac/STP Ltd. Notes: (i) The work shall be executed through authorised applicator of manufacturer only. (ii) Authrised Applicator shall be approved by GE before starting of work. (iii) All materials shall be procured directly form manufacturer/authorised dealer. (iv) The purchase voucher shall be produced to the Engineer-in-Charge for his verification of material.

M & L Open the cracked joints in top form V shape groove with approx 25mm × 25mm size. Thereafter apply in-depth waterproofing as a slurry application smartcare repair polymer mix with cement (1:1). Seal the grooves with prepared in smartcare repair mortar ready mix (1:4) and polymer of 10% of weight of cement (if required). Grout the joints through PVC injection nozzles fixed @ 500 mm c/c, using cement slurry grout with CBX100 or equivalent added @ 250 gm per bag of cement to full saturation etc. Note : Quoted rates shall be deemed to include removing of old bitumen membrane upto the concrete level.

Providing and carrying out crack/joint treatment in RCC members/slabs including grinding and cleaning of surface from loose material, laitance, paint etc. by diamond/wire grinding mechanical machine and steel wire brush, drilling holes of suitable dia at required spacing and fixing non-return injection packers/special nozzles complete. Injecting two component polyurethane (PU) plain injection resin (2:1 ratio) and/or PU foam injection grout (10:1 ratio) using mechanically/electrically operated piston driven pump under pressure up to 100 bar or as required to arrest seepage/leakage and fill cracks/voids completely. Cleaning, flushing and removal of packers after completion. Filling and repairing drilled holes, damaged areas and surface grooves with epoxy repair mortar/pidipoxy putty complete. For construction and kicker joints, carrying out injection grouting by drilling GI threaded nozzles to suitable depth and pressure grouting with cement slurry admixed with approved non-shrink waterproof grouting admixture such as Pidicrete AM/Dr. Fixit or equivalent to full saturation, including all labour, material, equipment, T&P, electricity, water, scaffolding if required and complete in all respects as specified and directed.

M&L for special treatment to floor/wall sunken portion with demolition of PCC incl complete sunken portion and plaster of entire sunken area (bottom & sides ) including removal of demolished material out side of MoD land for special treatment to sunken portion with 10mm thick plaster in CM 1:4 by using Dichtament. DM 1% by weight of cemenf and surface made smooth after curing period two coat of Dichtament. DS shall be applied @ 2.50 Kg/Sqm. The paste like consistaney is made by using 2.5 Kg of Dichtament. DS powder in one litre of admixture (The. admixture is made by dissolving 1 part by volume of Natufill SBR and 4 part by volume of water).Curing the treated surface for 3 days and conducting a ponding test for 72 hours to check water tightness. Applying a protective 10 mm thick plaster in CM 1:4 incorporating waterproofing admixture Dichtament @ 1 % by weight of cement over the waterproofing layer of Dichtament DS, apply one another coat of SBR Admixture on harizontal and vertical surfaces before plastering. All joints of CI Pipe, Nahani trap, WC connection etc.shall be filled by mixture of cement, fine sand and 10 % Näfufill SBR by weight of cemenit, incl 32mim dia 450 mm long GI Spout light grade shall be provided with required slope in all sunken slabs to drain off water, provide and laying brick bat coba treatment for sunkun slab use class II bricks laid over cement mortar proportion of 1:4 with waterproofing compound and filling all voids completely incl PCC (1:5:10) 40 mm graded agg and provide top layer finish over brick bat coba with 22-25 mm CM (1:3) mixed with waterproofing compound and provide slope towards floor trap (recommanded slope 1 in 60 to 1 in 80) and curing for a minimum period of 07 Days complete all as specified and directed.(Floor area shall be measured).