SPECIAL REPAIRS OF ROOF TREATMENT OF CERTAIN TECHNICAL BUILDINGS OF NAD KARANJA

Amount

PART I : BLDG WORK Complete removal of existing water proofing treatment of any description and in any position any thickness and cleaning, wire brushing, watering & removal of debris outside, as specified and directed by Engr-in-Charge. Note :- Unit rate quoted shall also include for removal of PVC water storage tank wherever existing carefully and refixing at the same or other position after completion of roof repair work.

Demolition of cement concrete (unreinforced) roof or chajja padding of any description and any position not otherwise specifically provided for, complete as specified and directed by Engr-in-Charge.

Material and Labour Cutting out cracks to V-section in existing roofs or terracing, cleaning out and filling solidly with a hot mixture of bitumen and clean dry sand 1:1 (by weight), complete as specified and directed by Engr-in-Charge.

Roughening surfaces of old concrete floors by picking, sweeping clean and washing down with waters to remove dusts etc, complete as specified and directed by Engr-in-Charge.

Brushing neat cement slurry with 3kg/sqm, complete as specified and directed by Engr-in-Charge.

Material and Labour for PCC 1:2:4 type B0 using 12.5 mm graded stone aggregate as in roof/chajja padding for maintaining roof/chajja slope including WPC by weight of total cement as per manufacturers specification , complete as specified and directed by Engr-in-Charge. Note : WPC will be measured separately

Material and Labour for 10 mm thick screed bed or bedding layer of mortar in cement mortar (1:3) for laying roof finish as padding finished even and smooth (without using extra lime or cement with including WPC by weight of total cement as per manufacturers specification complete all as specified and as directed. Note : WPC will be measured separately

Material and Labour for applying oil bound primer @ 0.40 Litre/Sqm manufactured by the same agency as that of APP with density of 0.87 to 0.89 Kg/Litre at 25 degree Celsius on the prepared dry roof surface and provide and lay 4mm thick APP modified water proofing membrane reinforced with non-woven polyester matt with physical properties as given in particular specification. The laying shall got be done through authorized applicator of manufacturer as specified in particular specifications. Provide over the membrane finishing with two coats of solar reflective bituminous aluminium paint @ 0.10 Kg/sqm as prescribed by manufacturer of membrane including Ten years guarantee on prescribed form complete all as per particular specification , manufacturers instructions and as directed by Engineer-in-Charge.

Supply only liquid water proofing compound as pedicrete URP mix with cement concrete/ cement plaster as per manufacture instruction all as directed by Engr-in-Charge.

Disconnecting existing tanks, of capacity exc 500 litres and n exc 1000 litres setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position including Cleaning and removing all scale and dirt, etc, from tanks and from mouths of circulating pipes, etc, complete as specified and directed by Engr-in-Charge.

Disconnecting existing tanks, of capacity exc 1000 litres and n exc 2000 litres setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting if required reconnecting and re-fixing in position including Cleaning and removing all scale and dirt, etc, from tanks and from mouths of circulating pipes, etc, complete as specified and directed by Engr-in-Charge.

Removing building materials etc. (other than spoil payable under items 03028 to 03031 in Section-3 - Earthwork) to a distance of 1.5 km or under, beyond the lead included in the rates, including loading, unloading and stacking at the destination, complete as specified and directed by Engr-in-Charge.

Chipping , removing carefully concrete work by low impact hammer ,breaker without damaging the structure & cleaning and disposal of debris out side the premises etc. complete as directed by Engr-in-Charge. Hard concrete should not be removed by force.

Material and Labour for Clean existing reinforcement with wire/ rotary wire brush, making the surfaces free from loose material dirt etc. complete and applying two coats of alkaline rust converting primer FEOVERT of Krishna Conchem or Roff rust cleaner of Pidilite or Dr. Fixit Rust removal or ShaliRust of STP Ltd. on the rebars, including cleaning the reinforcement, wirebrushing to remove loose rust spalls, wash the rebars with clean water within 3 min and wipe it dry, complete as specified and directed by Engr-in-Charge.

Material and Labour for applying two coats of Epoxy based Zinc primer in a span of four hours over the treated rebars and allow to dry for six hours, complete as specified and directed by Engr-in-Charge. The application shall be by brush. Epoxy primer for steel of make / brand - Corroseal-ZR of Krishna Conchem or Dr. Fixit Epoxy zinc primer

Material and Labour for cleaning all loose laitance on the concrete substrate and applying one coat of epoxy bonding agent on exposed concrete surface to ensure bond between old concrete & new concrete by brush application, complete as specified and directed by Engr-in-Charge. Make / brand Monobond SBR of Krishna Conchem or Dr. Fixit epoxy bonding agent or Shalicrete URP of STP Ltd.

Material and Labour for Building up the profile of structural members by using latex additives(MONOBOND) modified air cured mortar system (Polymer modified mortar) (1:5:15 = 1 monobond-5Cement-15 sand) -in damaged areas in 25mm to 30 mm thickness including levelling profiling etc , complete as specified and directed by Engr-in-Charge.

Material and Labour for Providing and applying jacketing around columns with Micro concrete (Molith-MC) M-40 including all lifts, shuttering, drilling holes and fixing shear anchor as per specification , complete as specified and directed by Engr-in-Charge. Note: Reinforcement shall be measured and paid separately.(Rates including jacketing, formwork and micro concrete)

Material and Labour for Drilling and fixing Rohibb Teflon nozzles in RCC members, including drilling holes of 12mm dia, 50 to 100mm deep holes. Works shall be carried out as under :- (i) Cleaning of holes. Clean the holes by air blower prior to fixing nozzles. (ii) Fixing of nozzles. Insert 12mm dia. Rohibb Teflon nozzles in cleaned holes. External end of nozzles to be machine to receive outlet of grouting gun. Fix it inside the holes by applying thixotropic epoxy putty to ensure complete sealing. Cure the system for min.12 hrs. (iii) Cutting of nozzles. Cut the nozzles by chisel after completion of grouting without damaging structural elements. (iv) In case crack upto 2mm wide, fix the injection nozzles directly over the cracks, at intervals of 6 to 9 inches, using a drilling machine. Fix PVC/MS nozzles in these holes with fast-setting epoxy putty & let it dry for 2 to 3 days. Also, seal the crack between the ports with epoxy putty. (v) In case where the crack is wider than 2mm upto 4 to 5mm, drill holes at the sides of the crack in a staggered fashion, at intervals of 6 inches and affix them with epoxy putty as mentioned above. (vi) Also, seal the face of the crack with a liberal application of the epoxy putty.

Material and Labour for Injecting of site mixed cement slurry grout, mixed in specified proportion containing cement, sand water with addition of plasticizers (approved make) & migratory corrosion inhibitors, water cement ratio shall be varied between 0.5 to 1.0 for each hole, shrinkage compensating cement slurry mixed to a lump free fresh creamy consistency ,Mixing shall be done by mechanical mixer continuously stirring mechanically to keep cement particles in suspension. Injection of approved/specified grout by means of pump at a pressure of 3-5 Kg/cm2 etc complete till the grout mix flows out from the nozzle indicating complete filling of grout in the holes drilled. Make / brand of Epoxy grout - Dr. Fixit Epoxy injection or EPCO KP-HP-250 of M/s Krishna Conchem or Shaligrout EI of STP Ltd.

Material and Labour for Injecting low viscosity (3-5cps) high molecular weight monomer by pressure and using mechanized injector gun with accessories till nozzles refuses to accept the grout, Including, Mixing of materials : Mixing of material components(part a&b) in the required quantities as per manufacturer's instruction by weigh batching. Grouting : Fill the grouting gun with concrete penetrating corrosion inhibitor EPCO-KP-100/Protectsil CIT or Ferogard 903. Maintain desired pressure in the gun by air compressor; maintain the pressure at exit (2 to 3kg/cm2) by monitoring pressure gauge at exit. Grout the material through prefixed nozzles in the structural elements@ 100ml per nozzle. Repeat the process for all the nozzles.

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 , complete as specified and directed by Engr-in-Charge.

Taking down cement plaster on brick or stone walls, etc. including raking out joints, hacking for key, scrubbing down with water, etc, complete as specified and directed by Engr-in-Charge.

Material and Labour for rendering 15 mm thick on fair faces of brick/concrete surfaces with two coats i.e (15 mm thick backing coat in CM (1:4) and including WPC by weight of 3% of total cement content) , finished even and smooth without using extra cement, complete as specified and directed by Engr-in-Charge. Note : WPC will be measured separately

Material & Labour for applying Two or more coats of 100% Premium acrylic emulsion paint having VOC less than 50 gm/litre and UV resistance as per IS 15489:2004, Alkali & fungal resistance, dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/ 10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/ 10 sqm over new surfaces in camouflage or plain pattern, complete as specified and directed by Engr-in-Charge.

Material and Labour for new or old exterior wall decorating and water proofing treatment to wall surface by wire brushing in order to remove dust, dirt, loose particles, laitance. Thereafter wash the surface with clean water & allow to dry. Fill visible cracks/joints by Chemistic crackseal caulking compound & allow to dry for 24 Hours. Apply a primer coat of Chemistic Prime N Seal (water base primer) and allow to dry for 6 hours. Thereafter apply 02 coats of Chemistik PDS-50(WB high Build Anti Carbonation Coating cum waterproofing) & shade by brush at the interval of 08 hours between the coat and allow to dry to match the existing shade (camouflage pattern). Rate quoted shall include for scaffolding to any height , covering etc, complete as specified and directed by Engr-in-Charge. (Note:- Item rate shall be include any height of Bldgs for scaffolding as all arrangement.)

PART II : EXTERNAL E/M SERVICES Supply & fixing in repairs/replacement air termination single pointed aluminium rod 12 mm dia and 300 mm long with necessary fixing arrangement on blocks on roof, all as specified and directed by Engr-in-Charge.

Supply & fixing in repairs/replacement air termination single pointed aluminium rod of 1.00 metro long 12 mm dia and making suitable arrangement for fixing of 1 metre rod on roof complete all as specified and directed by Engr-in-Charge.

Supply and Fix copper strip 32 mm x 6 mm buried in ground for earth continuity conductor or fixed to porcelain, insulator fixed to wall as in repairs, complete all as specified and directed by Engr-in-Charge.

Supply and Fix copper strip of 20 x 3.15 mm buried in ground for earth continuity conductor or fixed to porcelain, insulator fixed to wall as in repairs, complete all as specified and directed by Engr-in-Charge.

Supply and Fix copper strip of 25 x 3.15 mm buried in ground for earth continuity conductor or fixed to porcelain, insulator fixed to wall as in repairs, complete all as specified and directed by Engr-in-Charge.

Removing & refixing of air termination single pointed aluminium rod 12 mm dia and 300 mm long by tightening with necessary fixing arrangement fixed on existing/new PCC blocks on roof and making good complete all as specified and directed by Engr-in-Charge.

Removing & refixing of air termination single pointed aluminium rod 12 mm dia and 1000 mm long by tightening with necessary fixing arrangement fixed on existing/new PCC blocks on roof and making good complete all as specified and directed by Engr-in-Charge.

Supply and Fix in repair/replacement aluminium strip of size 25 x 3.15 mm fixed with suitable saddles and Fixing screw etc on roof with rubber & bitumen washer & fixed to insulator on wall for down conductor as fixed in repairs, complete all as specified and directed by Engr-in-Charge.

Supply and Fix in repair/replacement of size GI strip of 32x6mm on wall/surface for conductors or as earth continuity conductor all as specified and directed by Engr-in-Charge. Note :- Porcelain Insulator & PCC required shall be measured and paid for separately under relevant items of Sch

Supply and Fix in repair GI strip 32mm x 6 mm burried in ground for loop earthing and ground grid including excavation and earth work in any type of soil complete all as specified and directed by Engr-in-Charge.

Supply and Fix in repair/replacement test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm thick drilled and screwed including 3 Nos 8 mm dia 25 mm long hexagonal head screws fixed to GI strip bracket fixed to porcelain insulator in wall as in repairs, complete all as specified and directed by Engr-in-Charge. Note :- Porcelain insulator will be measured & paid for separately.

Supply and Fix in repair/replacement vitreous China porcelain insulator with busbar support white type, complete all as specified and directed by Engr-in-Charge.

Re-fixing in repair only aluminium strip of size 20/25 mm x 3.15 mm fixed to porcelain insulator fixed suitable saddles and Fixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed by Engr-in-Charge.

Re-fixing in repair only copper strip of size 20 mm x 3.15 mm fixed to porcelain insulator fixed with suitable saddleSupply and Fixixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed by Engr-in-Charge.

Re fixing in repair only copper strip of size 32mm x 6 mm fixed to porcelain insulator fixed with suitable saddleSupply and Fixixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed by Engr-in-Charge.

Re fixing in repair only GI strip of size 32mm x 6 mm fixed to porcelain insulator fixed with suitable saddleSupply and Fixixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed by Engr-in-Charge.

Material and Labour for earthing complete with GI earth plate electrode of size 60 cm x 60 cm x 6 mm thick burried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below the normal ground level connected with GI strip 32 x 6 mm by means of bolts, nuts, check nuts & washers of galvanised iron steel including necessary excavation and earth work in any type of soil, removing surplus soil to a distance not exc 50 m, with and including PCC chamber in PCC (1:2:4) , type B1, using (20 mm graded stone aggregate), mild steel angle iron frame made out of MS angle iron of size 40x40x6 mm thick duly painted with two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer hinged with and including 6mm thick CI cover with handle, watering arrangement with funnel internally secured with wire mesh with 20 mm dia medium grade pipe for watering ,40 mm dia light grade GI pipe for lead protection in & including alternate layers of charcoal dust and common salt complete all as shown in electrical plate No 3 of SSR Part-1(2009) connected to earthing test point all as specified and indicated including testing on completion

-Ditto- all as per serial item No. 43 here-in-before, but with copper earth electrode of size 60 cm x 60 cm x 3.15 mm thick & earth continuity lead of size 20 mm x 3 mm copper strip, complete all as specified and directed by Engr-in-Charge. Notes for item No. 43 and 44 :- (i) copper strip upto 7.5 m will be deemed to be included in quoted rate of item No. 43 and 44 respectively. (ii) The earth chamber shall be constructed 50 cm away from the edge of earth pit & the cost of the same is deemed to be included in rate quoted for above items.(iii) The rates quoted for item Nos 43 and 44 are also deemed to be included for cost of new test point as specified.

Material and Labour for PCC (1:2: 4) type BO, using (12.5 mm graded stone aggregate) of blocks size and IE rules including necessary use and waste of form work as in grounting of porcelain insulator, all as specified and directed by Engr-in-Charge.

Material and Labour for PCC (1:2:4) type B1, using (20 mm graded stone aggregate) for earth chambers as in repairs, coping for GI pipe post including necessary form work, excavation in soft loose soil, returning in filling and removing surplus soil to a distance n. exc 50 metre and deposing where directed by Engr-in-Charge.

Supply and Fix 40 mm dia GI pipe repair/replacement medium grade for post not exceeding 3 metres in length truly vertical position embedded in PCC including not exc and earth work as in repairs, complete all as specified and directed by Engr-in-Charge. Note : PCC of pole embedded will be measured and paid separately under relevant items of Sch.

Supply and lay 40mm dia, GI pipe, repair/replacement light grade, burried in trenches as earth continuity protection as in repairs, including necessary excavation and earth work in hard/dense soil, returning & filling in, watering and well ramming, removal of surplus soil to a distance not exc 50 metres complete all as specified and directed by Engr-in-Charge.

BSK Construction (BID ID -3498708)

HARI HAR CONSTRUCTION (BID ID -3491737)

M/s. Prakash Construction (BID ID -3493212)

M/S Royal Enterprises (BID ID -3492008)

M.K Enterprises (BID ID -3496908)

M/S Tirupati Goroba Shendge (BID ID -3490604)

VARDHAMAN CONSTRUCTION COMPANY (BID ID -3489755)

Advait Enterprises (BID ID -3498664)