REPAIRS MAINTENANCE OF ROOF TREATMENT TO CERTAIN BUILDINGS OF DNEC FOG CPDC ELSEC EETF DSP AND ANSP ETC AT RCI HYDERABAD

Amount

Taking down existing roof treatment including scrapping old bitumen layer complete of any description and removing of cement plaster/padding concrete on concrete surface of roof slab upto original roof slab including cleaning and disposal of debris off the premises complete all as directed.

M& L 10 mm thick Cement plster in CM 1:3 on fair faces of brick work or Concrete surfaces, Mixing with water proofing chemical (WPC will be measured and paid separetely) over neat cement slurry @3 Kg/Sqm on old concrete Surfaces

Material and labours chipout the existing loosened bitumen/bitumen mambrane completely reachup mother slab, clean the surface thoroughly to make it smooth and clean of any foreign materials repair the concrete where ever damaged using PMM HS repair, repairing of construction Joints/cracks/chasing with machine and filled the same with polymerised mortar in HS repair,coping of 75 x 75mm should be made at the junction of wall and raft slab using polymerised cement mortar 1:4 add mixed with advance latex plus. (b) Applying one coat of 50% diluted self priming PU roof coat. Allow to dry priming coat for 4 to 6 hours before applying PU coats and surface to be cleaned before applying PU coats. (c) Applying two coats of single components cold applied, water based poly urithene modified acrylic dispersion with highly elastic and UV registant water proofing treatment to the roof with HS PU roof at 0.6 kg/sqm for each coat without dilusion confirming to ASTM D 6083-97a (Standard specification for liquid applied acrylic coating using in roofing) each coat should be allowed to dry 4 to 6 hours the components shall have a density of 1.5 to 1.3 kg/ltr having tensile strength of 1.5N/mm2 having elongation of 350% with solid content 60% in two coats. SRI value should be more than 100. The quoted rate shall include surface preparation, repairing the cracks in mother slab by chasing with cutting machine and filled the same with polymerized mortar in CM 1:4 admixed with latex agent of reputed manufacturers, making coving at junction, bore packing, treatment of construction joints completely as per manufacturers specification and direction of the Engineer-in-Charge. The above treatmenet shall be got carried out by the authorised applicator of the manufacturer approved by the Garrison Engineer. Make : Bostik / Berger/ Fosroc/ Sika/ Asian or any other make approved by E-in-C's Branch for PU based water proofing treatment

Supply only Geotextile 30-40 GSM Complete all as per manufacturers instructions

M&L, PCC 1:2:4, type B-0 using 12.5mm graded stone aggregate as in padding concrete/levelling course, to maintain slopes on roof and finishing the surfaces fair and even including necessary formwork and other similar work complete all as specified and directed.

M&L, APP based polymeric membrane weighing minimum 3.5 Kg/Sqm and minimum 3 mm thick, reinforced with polyester non woven fabric( weight not less than 160 grams/Sqm) laid over primed surface including bitumens primer conforming to IS-3384 applied at rate of 0.3 litre/Sqm by forced application, complete all as specified and directed. Roof treatmentI roof shall consist of:- Note: The treatment shall be got executed through approved specialist agency or under their supervision and guidence.

(a) Applying one coat of bituminous primer by torch application conforming to IS-3384 @ 0.3Litre/Sqm (b) Laying of APP base membrane of specified thickness and weight (c) Applying one coat bitumen grade 85/25 @ 1.2 Kg/Sqm over memberene (d) Applying two coats of bituminous aluminium paint @ 100ml/Sqm

M & L Cutting grooves in brick wall, 75mm wide and 65mm deep and shaping horizantal faces of grooves with cement mortar in CM 1:3 and making good in CM 1:3 after inserting membrance in to the groove.

M & L, PCC 1:2:4 Type B1 (using 20 mm graded stone aggregate)as in roof kerbs or covering rounded or chamfered on edges all as specified.

M & L for Preparation of old plastered surfaces of External walls in different locations and at any height, contaminations, fungus and other micro organism growth shall be removed by mechanical means. Supply and applying Smartcare Damp proof single coats @ 0.45Ltr/Sqm over a coat of Damproof primer diluted with 33% by water and allow the coating to be cured complete as per manufacturer specifications. Brand: Asian/Foxroc/Pedilite Note: The above item shall be executed by Auth manufacturer/auth applicator after taking prior approval from Engineer -in- Charge

M & L for Preparation of old plastered surfaces of internal wall, in different locations and at any height, contaminations, fungus and other micro organism growth shall be removed by mechanical means. Supply and applying Damp block-2K two coats @ 1.50Kg/Sqm in two coats. Once the coating is cured, apply a single coat of epoxy triblock 1Kg/2 Sqm and allow the coating to be cured complete as per manufacturer specifications.Brand: Asian/Foxroc/Pedilite Note: The above item shall be executed by Auth manufacturer/auth applicator after taking prior approval from Engineer -in- Charge

M & L for all the visible cracks of external wall over 0.5mm size has to be cleaned properly & the same has to be cut open to 'V' grove with the help of machine and the same has to be filled with smartcare Hybrid PU sealant complete as per manufacturer recommendations. Brand: Asian/Foxroc/Pedilite Note: The above item shall be executed by Auth manufacturer/auth applicator after taking prior approval from Engineer -in- Charge

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

Supply only Liquid water proofing chemical of pedelite/Doctor fixit or equallent (ISI Marked) complete

Demolition of brickwork or stone/boulder masonary built in cement mortar including all quoins,arches,pillars,etc, but excluding ashlar facing, dressed stonework and precast concrete articles.

M&L, brickwork with sub class 'B' bricks, straight or curved on plan exceeding 6m mean radius built in cement mortar 1:6 complete all as specified and directed.

M&L rendering 15mm thick in CM 1:4 over brick work or concrete surface and finished the rendering surfaces even and smooth without using extra cement.

M&L Preparing new plastered surfaces of wall and and applying Two Coats of Distemper Oil Emulsion over a coat of alkali resistant primer and applied over 2mm thick BIRLA/JK water proof wall care putty complete all as specified and as directed.

M&L for preparation of newly plastered surfaces of walls and applying two coat of exterior weather proof paint (Apex Ultima of M/s Asian Paints / weather coat smooth of M/s Berger paint / weahter max exterior acrylic of M/s ICI Dulux) over a coat of primer over one coat of putty and as per manufacturer's instructions, complete all as specified and directed.

Dismantling of asbestos cement (corrugated, semi corrugated, etc.,) sheets in roof coverings along with ridges complete all as directed.

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as directed.

S&F, Roof trusses (framed), trussed, purlins, crane gantries rails and fastenings and heavy bracket framing of any section (beam, tee, angle, channel or flat sections) including distance pieces, cleats etc., conforming to Fe 410W (Grade E-250) quality 'A' complete all as specified and directed.

S& F pre-painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50 mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specified.

S&F, Pre-painted galvalume aluminium zinc coating GI based plain steel sheet 0.50mm thick of any colour having tensile strength of 550 MPa as in ridges, hips, valley gutters, drip and straight flashings, fixed with self tapping screws as specified, complete all as specified and directed.

S&F, 2mm thick Fibre glass reinforced translucent corrugated sheeting with two corrugations side lap fixed with L-type or J-type or cranked hook bolts in roof, wall etc., complete all as specified and directed.

M&L Preparation of new surfaces of steel and iron/steel surfaces and applying two coats of first qualtiy synthetic enamel paint over a coat of primer, complete all as specified and directed.

Disconnecting existing tanks of capacity exceeding 500 litres and not exceeding 1000 litres setting aside (or lowering if required) for repairs,to make convinient for roo ftreatment cleaning and removing all scale and dirt etc., from tanks and from mouths of circulating pipes and hoisting as required, reconnecting and refixing in position complete all as directed.

Disconnecting existing tanks of capacity exceeding 250 litres and not exceeding 500 litres setting aside (or lowering if required) for repairs, to make convinient for roof treatment cleaning and removing all scale and dirt etc., from tanks and from mouths of circulating pipes and hoisting as required, reconnecting and refixing in position complete all as directed.

S&F in repairs, 500 litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) hoisted and fixed in position including connecting up of existing inlet and outlet pipes and ball valve complete all as specified and as directed.

S&F in repairs, 1000 litres capacity triple layered rotational moulded polyethylene water storage tank (cylindrical vertical with closed top) hoisted and fixed in position including connecting up of existing inlet and outlet pipes and ball valve complete all as specified and as directed.

S&F, 20mm bore premium PTMT Ball valves, high pressure, with epoxy coated aluminium rod and high density plastic ball and fly nut complete, screwed for iron/GI pipe or brass ferrule complete all as specified and directed. Make:Prayag CAT No152 or equivalent as approved by GE

S&F 25mm bore premium PTMT Ball valves, high pressure, with epoxy coated aluminium rod and high density plastic ball and fly nut complete, screwed for iron/GI pipe or brass ferrule complete all as specified and directed. Make:Prayag CAT No153 or equivalent as approved by GE

S&F in repairs, 15mm bore steel water tubing, medium grade, ISI marked, galvanized, including all fittings such as bends, tees, elbows, reducers, unions, plugs, sockets etc., laid in trenches or fixed to walls and ceilings or concealed in walls, ducts/ceilings or laid in floors complete all as specified and directed.

All as per item No 32 above but 20mm bore of pipe.

All as per item No 32 above but 25mm bore of pipe.

Taking down rainwater pipes (any size or pattern) fixed to walls, including all fittings, heads, shoes, bends, swan necks, etc., (measured overall as fixed along the centre line over fittings and accessories), complete all as directed.

S&F, 75mm dia PVC(SWR) pipes, ISI marked, single socketed in any length with rubber ring joints fixed to walls with PVC clamps as rain water pipe complete including removing all loose packed plaster/cement mortar around the pvc pipe, making good and water tightened around the pipe and making proper slope to troughed portion using cement mortar 1:2(using water proofing liquid) to flow water into the PVC rainwater pipe properly from roof all as specified and as directed.

S&F, 110mm dia PVC(SWR) pipes, ISI marked, single socketed in any length with rubber ring joints fixed to walls with PVC clamps as rain water pipe complete including removing all loose packed plaster/cement mortar around the pvc pipe, making good and water tightened around the pipe and making proper slope to troughed portion using cement mortar 1:2(using water proofing liquid) to flow water into the PVC rainwater pipe properly from roofall as specified and as directed.

S&F, 150mm dia PVC(SWR) pipes, ISI marked, single socketed in any length with rubber ring joints fixed to walls with PVC clamps as rain water pipe complete including removing all loose packed plaster/cement mortar around the pvc pipe, making good and water tightened around the pipe and making proper slope to troughed portion using cement mortar 1:2(using water proofing liquid) to flow water into the PVC rainwater pipe properly from roofall as specified and as directed.

S&F, 75mm bore PVC(SWR) bends any radius with access door complete all as specified and as directed.

S&F, 110mm bore PVC(SWR) bends any radius with access door complete all as specified and as directed.

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

M/S PAVANI ENTERPRISES (BID ID -3358879)

Anjana corporation (BID ID -3357750)

M/s K Venkateswara Rao (BID ID -3358748)

CHITRA ENGINEERING CORPORATION (BID ID -3357877)

WELDECOR (BID ID -3357100)

Richcon Engineers (BID ID -3346266)

the bhimani group of companies (BID ID -3352409)