REPAIRS TO ROOF TREATMENT EXTERNAL WALL PLASTER / PARAPETS / RCC SLABS / STAIR SOFFITS / RAINWATER PIPES IN TECH AREA AT AFA HYDERABAD

Amount

M&L for Water proofing treatment to RCC roofs in repairs consisting of :- (i) Removing existing water profing treatment of any description, any type on roofs .Picking, sweeping, cleaning any washing down with water to remove all loose particles, dust etc complete all as directed by Engineer-in-charge. (ii) While doing the treatment on existing roof, concrete should be thoroungly inspected for any significant distress. such distress, if any repaired/rehabilitated and treated. Note: Pipes Over roof should be realigned where ever required. (iii) Cleaning the surface of roof & up to 300mm of parapet and crumple joint including junction of roof and parapet, providing and laying / fixing TPO (Thermoplastic Polyolefin) Water proofing membrane FOSROC Proofex ORG (minimum 1.5 mm thick) over a min 200 GSM Geo textile or asian Paints TPO or Equivalent product of M/s MC Bauchemic / CIPY / SIKA / Pidilite Dr Fixit / Thermax / STP applied as per manufacturer’s instructions. (iv) The work shall be carried out complete as per manufacturer’s specifications and application methodology. Execution to be done with authorised trained / skilled applicator of manufacturer as per technical guidance laid by manufacturer. Company bank guarantee to be given by contractor after completion of water proofing work before payment. Note:- (i) The rate quoted by the contractor shall be included for dismantling and refixing of pvc water tank hoisted on roof, taking down and refixing of water tubing and any other fitting on roof as required and no extra shall be paid (ii) work shall be carried out through authorised applicators of the manufacturer as per instruction.

M&L for water proofing treatment to chajjas / sunshade as under:- (i) preparation of surfaces on chajjas/sunshed over walls above chajjas up to 900mm and up to 600 mm on either side of chajja width, picking sweeping, cleaning and washing down with water to remove all loose particles, dust etc complete all as directed by Engineer-in-charge. surface shall be moist by sprinkling water. (ii) Applying STP LIMITED SHALICRYL-215 minimum 3 layers or equivalent product of Asian paint /M/s MC Bauchemic / CIPY / SIKA / Pidilite Dr Fixit / Thermax / STP applied as per manufacturer’s instructions.

M&L for taking down existing tar felt/water proofing membrane of any description over roof including cleaning and preparation of the roof surfaces, removal of unserviceable debris to outside MD land, and applying bitumen primer @0.30kg/sqm providing and laying 4mm thick APP modified water proofing membrane weight not less than 4.0 kg/sqm reinforced with non woven polyster mat weight not less than 160gm/sqm having softening point not less than 140 Degree centigrade longitudinal tensile strength not less than 800N per 5cm tearing strength of 180N (by torch application method) with minimum of 100mm side lap and 150mm end laps by application of torch. Applying a coat blown grade hot bitumen 90/15 over the membrane @ 1.20kg/sqm and applying a coat of silar reflective bitumenous aluminium paint @ 0.1Kg/sqm all as specified and as per manufacturr's instructions. The membrane shall be inserted in to the wall /parapet wherever required. mouth of rainwater pipes, gutters shall be properly treated to avoid ingress of the water. Note:- (i) The rate quoted by the contractor shall be included for dismantling and refixing of pvc water tank hoisted on roof, taking down and refixing of water tubing and any other fitting on roof as required and no extra shall be paid (ii) work shall be carried out through authorised applicators of the manufacturer as per instruction.

Demolition of cement concrete (unreinforced) of any description and in any position, pre-cast slabs, coving and concrete padding over roof slab incl existing tarfelt and cleaning/washing down and removing demolished material depositing where low lying area MD land .complete all as specified and as directed.

M&L for PCC 1 : 2 : 4 type B-0 ( using 12.5 mm graded stone aggregate) mixed with water proofing liquid as in padding on roofs to maintain slope as in correction layer of the depresed/ undulated portions and in roof kerbs or mud stops, rounded or chamfered on edges etc., finishing the cement concrete even and smooth without using extra cement complete all as specified and as directed. (Note :- Supply only water proofing liquid will be measured and paid separately under respective item only).

Supply only integral water proofing liquid complete all as specified and as directed.

S J REDDY

Dwarka Pershad Radhey Ramanlal

VAARAAHEE STRUCTURAL REPAIRS AND WATERPROOFING CONTRACTORS