GE I R AND D/CHD-37/2025-26CERTAIN REPAIR TO ROOFS CHAJJA AND OTHER ALLIED WORKS IN ZONE-II TO VIII, RTRS AT TBRL RANGE RAMGARH

Amount

Disconnecting existing tanks, setting a side (or lowering if required) for repairs, cleaning etc and hoisting if required reconnecting and re-fixing in position exc 250 ltrs to 500 ltrs complete all as specified and directed.

All as per serial item no 1 above but 500 ltrs to 1000 ltrs -ditto-

Taking up or down steel tubing and connection including cleaning for refixing or removed to store, 15 mm dia bore complete all as specified and directed.

Fixing only servicable steel tubing and connection 15 mm dia bore complete all as specified and directed.

Supply and fixing for GI tubing 15mm bore medium grade with all fittings and fixed complete to wall and ceiling or laid in floors complete all as specified and directed.

Taking up or down steel tubing and connection including cleaning for refixing or removed to store, 20 mm dia bore complete all as specified and directed

Fixing only servicable steel tubing and connection 20 mm dia bore complete all as specified and directed

Supply and fixing for GI tubing 20 mm bore medium grade with all fittings and fixed complete to wall and ceiling or laid in floors complete all as specified and directed

Supply and fixing in replacement of rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I of capacity 500 ltrs 20 mm dia ball valves high pressure of PTMT with epoxy coated aluminium rod & high-density plastic ball screwed for iron pipe and fixed complete all as specified and directed. (Minimum weight 15mm-142 gms/ 20mm-210 gms/25mm-455gms/ 40mm- 690 gms)

Supply and fixing in replacement of rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I of capacity 1000 ltrs.20 mm dia ball valves high pressure of PTMT with epoxy coated aluminium rod & high-density plastic ball screwed for iron pipe and fixed complete all as specified and directed. (Minimum weight 15mm-142 gms/ 20mm-210 gms/25mm-455gms/ 40mm- 690 gms)

Demolition of cement concrete of any description and in any position complete all as specified and directed.

Dismantling of brick tiles or terracing tiles or any other roof treatment, single layer on roof & stacking serviceable tiles for use and disposal of unserviceable material off MOD premises complete all as specified and directed

Demolition of mud in roofs, any thickness, including plastering and leaping (whether full thickness removed or only a part thereof) complete all as specified and directed.

Taking down existing water proofing treatment and chiselling the existing bituminous coating and disposing rubbish off the premises to a distance exceeding 150 m and n. exc 250 m complete all as specified and directed

Roughening surfaces of old concrete floor etc by picking, sweeping clean and washing down with water to remove dust, etc. complete all as specified and directed.

Material and labour for providing plain cement concrete (1:3:6) type C1 using 20mm graded crushed stone aggregate on roof surfaces as padding to receive waterproofing treatment and to the required slope including finishing the exposed surface even and fair complete all as specified and directed.

Material and labour for plain cement concrete type B0, 1:2:4 (using 12.5 mm graded granite stone aggregate) in roof kerbs, mud stops, rounded or chamfered on edges complete all as specified and directed.

Material and labour for screed bed 10 mm thick on fair faces of brick work or concrete surfaces of slab in cement mortar (1:4) and finished even and fair with using water proof compound @ 2% by weight of cement complete all as specified and directed. Note: Water proofing compound shall be measured and paid for separately.

Material and labour for applying evenly a tack coat of industrial bitumen 85/25 at the rate of 1.20 kg per sqm including cleaning of surfaces complete all as specified and directed.

Material and labour for APP based polymeric membrane minimum weight 3Kg/sqm and minimum 3mm thick reinforced with polyester non wove fabric (weight not less than 150gm/Sqm) laid on primed surfaces by forced application complete all as specified and directed.

Material and labour for flush pointing in cement mortar (1:3) to brick work or brick tiles laid in floors or surface channels, roof etc complete all as specified and directed.

Material and labour for roof cleaning by cutting or uprooting grass, vegetation and small plants etc from the roof/wall, including making good cement plaster/concrete surface as specified and directed and removing rubbish off the premises, cleaning the surface complete all as specified and directed.

Material and labour for cleaning and preparation of roof/wall (RCC/BRICK/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, supplying and applying High performance Hybrid Polyurea waterproofing coating spray/hand applied liquid membrane with following specifications: (a) Elongation of range more than 450%. (b) Tensile strength more than 1.5 N/mm2. (c) Crack bridging ability of 3.00-4.00mm. (d) 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 Gollas 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

Taking down cement plaster of any description from brick wall surfaces etc including racking out joints and hacking for key, scrubbing down with water etc complete all as specified and directed.

Material and labour for internal plastering 10 mm thick on fair faces of brick or concrete surfaces, in cement mortar 1:6, finished even and smooth without using extra cement complete all as specified and directed.

Material and labour for external plastering 15mm thick on fair faces of concrete surfaces in CM (1:4) using WPC @ 3% by weight of cement complete all as specified and directed. Note : WPC shall be measured and paid for separately.

Supply only water proofing compound complete all as specified and directed

Material and labour for rendering 5 mm thick in cement mortar 1:3 on fair faces of concrete surfaces of ceiling, finished even and smooth without using extra cement complete all as specified and directed.

Material and labour for applying two coats of cement base paint on walls including preparation of new plastered surfaces complete all as specified and directed.

Material and labour for two coats of oil bound distemper over a coat alkali resistant priming paint on walls including preparation of new surfaces complete all as specified and directed

Material and labour for applying three coats of white wash on ceiling including preparation of new surfaces complete all as specified and directed.

Demolition of brick / block masonry built in CM including all quoins, arches, pillars etc and clearing rubbish off the premises complete all as specified and directed.

Material and labour for brick work with subclass B bricks, straight or curved on plan exc 6m mean radius built in cement mortar (1:6) complete all as specified and directed

All as per serial item no 34 above but except brick -ditto-

Supply and fixing for framed work such as grills, gratings, etc.. with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks and similar work con- forming to Fe.290.Gde-E-165 etc complete all as specified and directed

Dismantling of asbestos cement, CGI (corrugated, semi corrugated, plain etc) sheet in roof covering complete all as specified and directed

Supply and fixing for pre- painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50mm thick of an colour having tensile strength of 550 MPA as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed.

Supply and fixing for pre- painted galvalume aluminium zinc coating GI based plain steel sheet 0.50mm thick of an colour having tensile strength of 550 MPZ as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed.

Dismantling of wrought iron or MS work of any description complete all as specified and directed

Material and labour for roof trusses framed trussed purlins crane rails and fastening and heavy brackets framing ( beam tee, angle, square, rectangular hollow sections or flat sections indl distance pieces, cleats etc Fe-410W (Gde E 250) complete all as specified and directed

Material and labour for preparation of new untreated surfaces of steel of any description exc 10cm width or girth not otherwise described and applying two coats of synthetic enamel paint over one coat of red oxide primer complete all as specified and directed

Demolition of RCC of any description and in any postion not otherwise specifically provided for etc complete all as specified and directed

Material and labour for formwork for flat rough finished surface to sides and soffits of floor or roof beams, beam haunching’s, girders, bressummers, lintels, cantilevers, shelves including sup- ports, overhangs, etc. also splays between floors and beams, etc complete all as specified and directed.

Material and labour for RCC 1:2:4 type B1 (using 20 mm graded aggregate ) as in chajjas and other RCC work etc complete all as specified and directed

Material and labour for mild steel bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips .Fe-410-W (Gde.E-250) Part- I quality-A or Fe 290 (Gde -E-165) etc complete all as specified and directed

Chipping of unsound/weak concrete material 25 mm avg thickness from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts complete all as specified and directed

Cleaning of reinforcement from rust from the reinforcing bars upto 12 mm to give it a total rust free steel surface by using alkaline chemical rust remover of approved make with paint brush and removing loose particles after 24 hours of its application with wire brush and thoroughly washing with water and allowing it to dry, complete all as specified and directed

Material and labour for providing, mixing and applying SBR Polymer of approved make @ 2% by wt of cement used) modified plain/reinforced cement concrete for beam/ chajjas with nominal mix type B 0 1:2:4 on chipped portion of RCC as per specifications complete all as specified and directed.

Material and labour for preparation of new surface of APP membrane and applying two coats of aluminium paint complete all as specified and directed.

Supply and fixing in repair 20 mm dia. gun metal globe or gate valve with iron wheel head screwed both ends for iron pipe and fixed. complete all as specified and directed

Supply and fixing in repair 15 mm dia. gun metal globe or gate valve with iron wheel head screwed both ends for iron pipe and fixed complete all as specified and directed.

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

Supply and fixing in repair PVC (SWR) 100 mm bore of bends any radius complete all as specified and directed

Supply and fixing in repair PVC (SWR) 75 mm bore of pipes double socketed in any length with rubber ring joints fixed to walls complete all as specified and directed

Supply and fixing in repair PVC (SWR) 75 mm bore of bends any radius complete all as specified and directed

M/S SATYA SAI CONSTRUCTION (BID ID -3436848)

KHOSLA ENGINEERS BUILDERS (BID ID -3437098)