COMPREHENSIVE REPAIR MAINT OF CHAJJA, FACIA, SLAB, WALL GRIT, EXTERNAL TREATMENT INCL ROOF REPAIR LEAKAGE SEEPAGE OF BLDGS AND CERTAIN OTHER MISC REPAIR WORKS IN ABHM, ABHM ANNEXE, OFFRS MD ACCN AT SP MARG AND TPT COY UNDER GE NEW DELHI

Dismantling brick tiles or terracing tiles single layer on roof laid, bedded and pointed in any mortar incl removing the unserviceable material out side the MOD land.

Demolition of Mud phuska in roofs, any thickness inc plastering & leaping plaster including removing the demolition material out side the MOD land complete all as specified and directed.

Demolition of reinforced cement concrete in roof, floors (other than ground floors), beams, staircases, landing, chajjas and similar suspended work as specified including removal out side MoD land complete all as specified. Note with necessary scaffolding/form work required for completion of work upto sixth storey height including all safety factor.

M&L for reinforced cement concrete (nominal mix) type B1 1:2:4 (20mm graded crushed stone aggregate) as in Chajjas and the like complete all as specified and directed.

M&L for cement concrete 1:2:4 type B0 (using 12.50 mm graded stone aggregate) as in levelling coarse over RCC slab to bring the desired slope up to six stories of Bldg, using water proofing compound as per manufacturer instruction complete all as specified & directed. Note:- Water proofing compound shall be measured and paid separately.

M/L for cutting grooves in brick wall, 75 mm wide and 65 mm deep and shaping horizontal face of groove with cement mortar 1:3.

M&L for APP based polymeric membrane plain finish minimum weighing 3 kg/Sqm and minimum 3mm thick reinforced with polyester non woven fabric (wt not less than 150 gms/sqm) over one coat of 85/25 bitumen @1.6 kg/sqm and paste the membrane with torching method and again apply a coat of 85/25 bitumen @ 1.6 kg/sqm at overlapping joints with minimum overlap of 75mm lengthwise and 100mm widthwise of membrane over 10mm thick plaster in cement mortar 1:4 all as specefied and directed

S & F for PCC Roof /Terrace Tiles (300 mm x 300 mm x 20 mm) laid on 15 mm thick cement moter in 1:4 and grouting the joints with mix of white cement & marble powder in ratio of 1:1, including rubbing and polishing of the surface all as specefied and directed

Demolition of old damaged existing water proofing treatment on RCC roof of any description in any position and specification and cleaning the surface thoroughly and removing materials from site of work and providing the following works :- (a) Over 15 mm thick screed bed in cement mortar 1:4 on roof surface or concrete surfaces, finished even and smooth (without using extra cement) mixed with WPC (200ml per 50kg of bag cement) all as specified and directed. (b) . Applying evenly a coat of bitumen primer @ 0.40 Kg/Sqm. (c) Applying APP modified polymeric membrane over the bitumen coat surface ,weight not less than 3.0 Kg/Sqm and over lap 100mm and sealed by torch application as per manufacture instructions. (d) Sealing edges well into grooves & protect with CM 1:2 complete all as specified and directed. (e) Applying aluminium paint @ 200 gm/sqm in two coats over polymeric membrane at non approachable roof all as specified and directed

M&L for surface Preparation: The surface to receive the treatment shall be thoroughly free of laitance, scales, oil or any other loose material. It should be made free of any sharp objects. Cleaning of PCC/plaster surface shall be done with wire brushing to attain smooth levelled surface. Cracks shall be rectified, filled using dual shrinkage compensated Repair Mortar and dried for 72 hours before laying the liquid applied membrane. Grout: Providing Chemical injection treatment in the form of pressure grouting to the construction joint and cracked portion at 1m c/c by injecting cement slurry mixed with dual shrinkage compensated cementitious grout Injection grout additive, in the required consistency through the pre fixed PVC nozzles in the 18 mm dia holes, fixing of PVC nozzles with instant setting cement. Angle fillets/Coving: Providing and making of fillet, 50mm x 50mm on sharp corner of terrace with cement sand polymer mortar (add “multipurpose mortar”, 10% by weightofcement). First apply the bonding coat of Multi-Purpose Polymer 5-10% diluted in water and add to cement slurry. Apply the bonding slurry and apply the polymer mortar over the sharp edges complete all as specified and directed. Note: Grouting will be done when and where ever required and the work shall be executed through MoU with manfacturer. Treatment of pipe entry points: Preparing the inside surface of core and PVC /MS Pipe by roughening using suitable Sand paper to get better adhesion prior to packing works. Cleaning the surface by wire brushing followed water jet to remove any laitance or loose flaky particles. Packing the gap using free flowable non shrink cement polymer based grout up to the surface of the bore while the bonding agent is in tacky state. the periphery of PVC pipe should be sealed with Hybrid PU Sealant or dual shrinkage compensated Micro concreteNote: Will be done when and where ever required Application of two component Epoxy Primer (Resin & Hardener) on the cleaned surface for bonding of Polyurethane with the existing concrete surface. 33 % water dilution is recommended with the pure mixed primer. The primer mixing ratio will be 1:3(Resin:Hardner) Supplying, providing and applying waterproofing treatment to Podium area with single component highly elastomeric seamless cold applied modified PU coating complete as per manufacturer’s specifications and application methodology. The same coating shall be applied in two coats achieving a total thickness of 1mm. The coating shall have a dual combination of 280% elongation. Material coverage 1.2kg /sq.mt. Make of water proofing treatment : Dr Fixit Roof seal 148 or Asian Paint smart care damp proof or SIKA 710/715