GE (I) R AND D/CHD-31/2024-25 SPECIAL REPAIR TO ROOF AND ALLIED SERVICES IN SEC 24, 42, 38, 29 UNDER GE (I) R AND D CHANDIGARH

Amount

Material and labour for cleaning and preparation of roof/wall (RCC/bricks/tiles/cement concrete) surface and made free of dirt, foreign particles, laitance followed by grinding all protrusions to make surface modulated. Thereafter, inspection for cracks on the surface caused by thermal expansion/ contraction and repairing the cracks on the surface caused by thermal machine, filled with repair mortar/General purpose grout in the proportions as recommended by manufacturer, supply and applying high performance hybrid polyurea waterproofing coating spray/hand applied liquid membrane with following specifications complete all as specified and directed. (a) Elongation of range 400% 600%. (b) Tensile strength of 8-12 N/mm2. (c) Crack bridging ability of 3.00-4.00mm. (d) Hardness (Shore ‘A’ ASTM D2240) of range 50-70.The application shall include final base preparation, epoxy primer application in ratio 1.1 (resin: hardener) with 100% water dilution and application of hybrid polyurea in two coats in 6 hrs interval to achieve total min thickness 1 to 1.50mm. The application/ treatment shall be carried out by authorized rep of approved specialist firm/manufacturer. Note:- The defect liability period of water proofing treatment to RCC roof slab including sunken floor shall be 10 years and the contractor shall be responsible to keep the entire building(s) free from leakage/seepage for a period of 10 years after certified date of completion. The contractor may obtain a similar guarantee from the specialist firm engaged by him for the purpose

Material and labour for cleaning the surface and making free of dirt, foreign particles, laitance followed by grinding all protrusions to make surface modulated, thereafter, inspection for cracks on the surface caused by thermal expansion, contraction. cutting the grooves with suitable cutter machine in "v" groove filled with repair mortar/micro concrete/general purpose grout as recommended proportionally as per recommendation of manufacturer. Making of golas at all the corners with polymer modified mortar 1:4 cement sand with acrylic polymer 3.5% by weight of cement) complete all as specified and directed.

Material and labour for waterproofing expansion joint by providing and applying thermoplastic elastomer tape 200mm wide 1mm thick, a modified flexible TPE based root resistant membrane with chemical resistant. The tape system must be tensile strength >5N/mm2 according to ASTM D412; tear strength > 25N/mm according to ASTM D 624; elongation > 400% according to ASTM D 412; chemically resistant to several chemicals; passes low temperature foldability at -40◦C according to ASTM C 1305; passes artificial weathering according to ASTM G 154. The tape must be capable of servicing a wide range of temperature of -40◦C to +80◦C. The tape, adhesive and repair mortar must by provided by same manufacturer for full compatibility. The same is applied using epoxy adhesive of layer 2mm to prepare substate on both sides of joint and both ends of the tape embedded into the adhesive with width of 38mm complete all as specified and directed

Taking down dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to a distance not exc 50 m complete all as specified and directed

Material and labour for 15 mm cement plaster on the rough side of single or half brick wall of in cm 1:6 complete all as specified and directed.

Material and labour for applying acrylic smooth exterior paint of required shade on new work (two or more coats applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm) complete all as specified and directed

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 complete all as specified and directed

Material and labour for providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS : 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank complete all as specified and directed

Dismantling G.I. pipes (external work) including excavation and refilling trenches after taking out the pipes, manually/ by mechanical means including stacking of pipes within 50 metres 15 mm to 40 mm nominal bore complete all as specified and directed

Supply and fixing G.I. pipes complete with G.I. fittings and clamps, i/c cutting and making good the walls etc 15 mm dia complete all as specified and directed

All as per serial item no 10.00 above but 20 mm dia -ditto-

Supply and fixing ball valve (brass) 15 mm dia of approved quality, high or low pressure, with plastic floats complete all as specified and directed

Supply and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) 20 mm dia complete all as specified and directed

Dismantling/taking down PVC rain water pipe (any size) including all fittings, head shoes, bends complete and removing from site complete all as specified and directed

Supply and fixing for PVC (SWR) pipes double socketed in any length with rubber ring joints fixed to walls 110mm dia complete all as specified and directed

Supply and fixing for PVC (SWR) pipes double socketed in any length with rubber ring Joints fixed to walls 75mm dia complete all as specified and directed

Supply and fixing for PVC (SWR) bends 75mm dia complete all as specified and directed

Supply and fixing for PVC (SWR) bends 110mm dia complete all as specified and directed

Supply and fixing for stack clamps out of 50 mm by 5 mm flat iron 100/75mm dia complete all as specified and directed. Note: Contractor make to temporary alternative arrangement for continue water supply to the Occupant of the said qtr from starting the works to complete works of roof failing which 10 % recovery to be made from work done

M/S MATLOOB AHMED (BID ID -3047476)

M/s Krishan Aggarwal (BID ID -3061772)