REPAIRS TO AC SHEETS, ROOF GUTTERS, ROOF SHEETS AND ROOF TREATMENT AT CERTAIN BUILDINGS INSIDE TECHNICAL AND ADMIN AREA INSIDE DRDL CAMPUS UNDER AGE B/R-I KANCHANBAGH, HYDERABAD

Amount

Demolition of cement concrete in any position including removal of any type of old treatment, tarfelt & debries etc complete all as specified & directed by Engr-in-Charge.

Demolition of Cement Concrete (Reinforcement cut as required to facilitate demolition) of any description and in any position not otherwise specifically provided for and removing the same from Site(s), complete all as specified and as directed.

Dismantling of existing AC (corrugated, semi corrugated etc) roof covering sheet complete all as specified and directed.

S&F 3mm thick Fibre glass reinforced translucent corrugated sheeting with two corrugation side laps fixed with coach screws and washers in roof, walls etc.

M&L Pre painted galvalume aluminium zinc coating GI based corrugated /trepezoidal steel sheet 0.50 mm thick of any colour having tensile strength of 550Mpa as in roof covering/cladding to walls fixed with self tapping screws complete all as specified and directed.

M&L Pre painted galvalume aluminium zinc coating GI based plain steel sheet 0.50 mm thick of any colour having tensile strength of 550Mpa as in ridges fixed with self tapping screws complete all as directed.

Cleaning of Roof gutter including water outgoing holes at any hight of bldg,work shop and hangers and removing the materials leaves, vegitation mud or other waste materials to distance n exc 50m, complete all as specified and directed by Engineer-in-Charge.

Cutting /removing of plants and grass growth on bldg's roofs, chajjas and edges on bldgs,work shop, hangers (at any floor and any height) including spreding chemicals at plant roots area and finished the damaged area with PCC 1:2:4/ Cement plaster in CM 1:4 as required and remove the waste to a distance n exc 50m, complete all as specified and directed by Engineer-in-Charge.

Cleaning of Roof sorroundings area mud, tree leaves etc including water outgoing holes at any hight of bldg, removing the materials (sludge) to distance n exc 50m, complete all as specified and directed by Engineer-in-Charge.

Cleaning of drains by excavating of the filled earth vegetation and all forged material average width 45 cm & depth 50cm and removing the excavated materials to a distance exc. 50m and not exc. 250m complete all as specified and as directed

M&L Brick work with sub- class 'B' class bricks straight or curved on plan exc 6m mean radius in CM (1:6), including demolition of brick work complete all as specified and directed by Engineer-in-Charge.

Disconnecting existing tanks, setting aside (or lowering if required) for repairs etc and holding if required reconnection and refixing in position, capacity of tank exc 250 & n.exc 500 Ltrs capacity complete all as specified.

All as item No.12 above but for capacity of tank exc 500 & n.exc 1000 Ltrs capacity complete all as specified.

M&L for 40mm thick PCC type B0, 1:2:4 (using 12.5 mm graded stone aggregate) as in paddings in roofs complete all as specified.

M&L for cement screed/rendering 10mm thick in C.M (1:3) over roof slab including parapets inverted beams etc. mixed with water proofing compound, rendering all as specified and directed (WPC shall be measured and paid separately and finished even and smooth without using extra cement complete all as directed by engr-in- charge. Note:- IWPC will be measured & paid separately.

M&L for APP based polymeric membrane minimum weighing 3Kgs/Sqm and minimum 3 mm thick reinforced with polyster non wove fabric (wt not less than 150 gms/sqm) over a coat of hot bitumen 85/25 grade applied @ 1.20 Kg/Sqm after priming the surface with bitumenious emulsion (tack coat) @ 100 gms/sqm with 10 cm overlap of the membrane to be provided duly fused uniformly by LPG torch flame complete all as directed .

M&L for preparation of surface and applying one coat of aluminium paint @ 100 ml/sqm over APP membrane all as specified and directed.

Supply only liquid water proofing compound.

Waterproofing for terrace: (i) Cleaning the surface areas thoroughly so that they are free of all contaminants like dirt and laitance & to remove all the loose materials by various mechanical means. Removal of all surface Imperfections, protrusions, loose concrete & filling of cracks using Seal PU or Polymer Modified Mortar in the ratio Seal Crete : Cement : Sand (1 : 2 : 5 ) . (ii) Providing and making vata at the junction of the walls and the slabs using PMC mortar in the ratio of Seal Crete : Cement : Sand (1 : 2: 5 ) using SBR Latex as the bond coat. (iii) Correct all construction joints by grouting wth grout IP at 1m apart and opening of joints in "V" cut groove and fill with PMC mortar, using SBR Latex as the bond coat. (vi) Providing and applying brush applied water based PU dispersed polymer modified Elastomeric liquid membrane, Urethane BTD with Zero VOC to form the membrane in situ at site with 3 layers of monolithic, seam less finish having > 500% elongation The first layer is to be apply primer @ 200 Gms per Sqm and shall act as the prime coat to fill in the cavities. This can be brush or roller applied. For spray application, using any airless spray system with recommended nozzle size at 30:1 at 2 bar pressure.

(v) Providing and applying the second coat @ 1 kg per Sqm using the soft brush, roller or Spray system with the recommended nozzle size on to the primed surface. Providing and applying 45 Gsm Fiber cloth over the 1 st coat,when substrate till the coat is tacky Providing and applying 3 rd coat @ 1 kg per Sqm to finish the application for a thickness of 1.5 mm membrane formed in place. The second coat should be applied perpendicular to the first coat for cross linkage and complete as per the specification. (vi) Top Screed modified with Integral Waterproofing Chemical: Placing a seperation layer of 120 GSM geotextile fabric over the waterproofing membrane and carrying out sloping screed on top of it over the with cement modified @ 0.4% with Manufacturer plast LW+ for waterproofing.

Notes: - 1. To be applied by the Rep of manufacturers authorized applicator only. Contractor has to provide manufacturer’s test certificate for the above mentioned Technical parameters and purchase Vrs. 2. Removal of existing treatment to be paid separately. 3. Roof top to be ensured to avoid water ponding. 4. For accessible terrace and inaccessible terrace, 300mm height of vertical surface/ parapet wall to be treated with same specification of slab. Make: - STP , Bostik, Berger, Fosroc, Sika, Asian or any other make approved by E-in-C’s Branch for PU based water proofing treatment.

M&L PCC 1:2:4 type B-0 (using 12.5 mm grade stone agg)as in roof kerbs,mud stops,rounded or chamfered on edges complete all as specified and directed

S&F 20mm thick hydraulically pressed cement tiles laid over 15mm thick cement screed bed 1:6 mixed with water proofing compound and joined with CM 1:3 mixed with 5% crude oil by weight of cement over APP membrane.

All as above but except tiles

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 conforming to Fe- 290. Gde E-165

Preparation of two coats of synthetic enamel paint with one coat of red oxide primer on new or previously untreated steel surfaces of any description over 10 cm in width or girth not otherwise described.

Dismantling of old Wall and ceiling boards (fibre, pulp, insulation,etc.)or insulation boards/slabs/ blankets, any thickness, including cover fillets etc.

Providing & fixing in repairs false ceiling with Semi perforated 12mm thick micro tegular edged GRG false ceiling tiles at all heights with GRG (Glass Fibre Reinforced Gypsum) false ceiling tiles of Size 595 x 595 mm of approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, NRC0.50 to 0.75 as per IS 8225:1987, Noncombustible as per BS 4 76 (part 4 )-1970 and light reflectance of 85% (minimum) to be laid in true horizontal level suspended on inter locking metal T-Grid of hot dipped galvanized iron section of 0.33mm thick (galvanized @ 120 grams per sqm including both sides) comprising of main T runners of size 15 x 32 mm of length 3000mm,cross-T of size 15x 32mm of length 1200mm and secondary intermediate cross-T of size 15 x 32 mm of length 600mm to form grid module of sIze 600x 600mm, suspended from ceiling using galvanized mild steel items (galvanizing @ 80 grams per sqm) i.e 50mm long, 8mm outer diameter M-6 dash fasteners, 6mm dia fully threaded hanger rod upto 1 OOOmm length and L shape level adjuster of size 85x25x2mm. Galvanised iron perimeter wall angle of size 24x 24x0.40mm of length 3000 mm to be fixed on periphery wall I partition with the help of plastic rawl plugs at 450 mm center to center and 40mm long dry wall wood screws. The work shall be carried out as per specifications, drawing and as per directions of the complete all as directed.

M&L for preparation of old distempered surfaces of walls by washing, rubbing down and stopping and applying one coat of oil emulsion distemper complete all as directed.

M&L for preparation of old distempered surfaces of ceilings by washing, rubbing down and stopping and applying one coat of oil emulsion distemper complete all as directed.

M&L for preparation of old distempered surfaces of walls by washing, rubbing down and stopping and applying one coat of weatherproof antifungal exterior paint complete all as directed.

M&L for preparation of old painted steel surfaces of any description not otherwise described over 10cm width or girth and applying one coat of synthetic enamel paint complete all as directed.

M&L for preparation of old painted wooden surfaces of any description not otherwise described over 10 cm width or girth and applying one coat of synthetic enamel paint complete all as directed.

S&F PVC (SWR) pipes 110mm bore, single socketed in any length with rubber ring joints fixed to wall or laid in floors including taking down old pipe complete all as directed.

S&F PVC (SWR) pipes 150mm bore, single socketed in any length with rubber ring joints fixed to wall or laid in floors including taking down old pipe complete all as directed.

S&F 150mm PVC (SWR )bends with access door of any radius all as specified & directed.

M&L for PCC (1:2:4) type B-1(using 20 mm graded stone aggregate) of 100 mm thick as in plinth protection / Path / PCC floor, finished even and fair, complete all as specified and as directed.

Taking up or down steel tubing of 15 mm bore and connections, including cleaning for re- fixing or removal to store

Supplying and laying of 16mm CPVC pipes SDR 11 & Plain CPVC SDR 11 fittings on walls/ceiling or laying in floors complete all as specified.

Taking up or down steel tubing of 20 bore and connections, including cleaning for re- fixing or removal to store

Supplying and laying of 20mm CPVC pipes SDR 11 & Plain CPVC SDR 11 fittings on walls/ceiling or laying in floors complete all as specified.

Taking up or down steel tubing of 25 mm bore and connections, including cleaning for re- fixing or removal to store

Supplying and laying of 25mm CPVC pipes SDR 11 & Plain CPVC SDR 11 fittings on walls/ceiling or laying in floors complete all as specified.

S&F in repair 20 mm Stop valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions and fixed

S&F in repair 25 mm Stop valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions and fixed

S&F in repair 25 mm bore Ball valves high pressure of PTMT with epoxy coated Aluminium rod & highdensity plastic ball screwed for iron pipe and fixed. (Minimum weight 15mm-142gms/ 2 0mm-210gms./ 25mm-455gms)

Cleaning and removing all scale and dirt, etc, from tanks of exc 500 & n.exc 1000 ltr capacity and from mouths of circulating pipes, etc

M & L for 1000 ltr capacity Rotational moulded polyethylene water storage tanks tripple layer ISI Mark (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I

Rendering 15mm thick cement plaster in CM 1:4 on fair faces of brick work or concrete surfaces to back of tiles. Note:- For Sl No. 01 to 24 (Work shall be carried out upto G+2 storey bldg, contractor to quote rates accordingly).

Sai construction & services (BID ID -3397406)

K CHANDRAPAL REDDY (BID ID -3398943)

Maruthi international (BID ID -3396945)

Anjana corporation (BID ID -3396792)

SM CONSTRUCTIONS (BID ID -3397997)

PAVAN ENTERPRISES (BID ID -3415401)

SUN LIGHT HOUSE (BID ID -3414900)

M/S GDR CONSTRUCTIONS (BID ID -3396428)

M/s K Venkateswara Rao (BID ID -3397321)

rahi consultant (BID ID -3397594)

BHAGYARAM ENTERPRISES (BID ID -3396710)

WELDECOR (BID ID -3397169)

SRI SAI ENTERPRISES (BID ID -3397005)