REPAIR AND MAINTENANCE TO WATER SUPPLY DISTRIBUTION SYSTEM AT MISCELLANEOUS WORK AT TECHNICAL AND DOMESTIC AREA AND REPAIRS/REPLACEMENT OF OVERHEAD TANKS AND CONNECTED ITEMS AT AF STN YELAHANKA

Amount

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth getting out in hard/ dense soil, for removing/ laying pipes complete all as specified and as directed.

Returning, filling in, including spreading leveling watering and well ramming in layers not exceeding 25 Cms all as specified and as directed.

Removing excavated material not exceeding 50mtr and depositing where directed to a level not exceeding 1.5 metre above the starting point all as specified and as directed.

Supply and spread in trenches river sand including levelling punning for cushioning of cable complete all as specified and directed. Note: - For payment purposes only punned thickness of sand will be measured & paid.

Supply , laying and testing cable XLPE insulated, screened, PVC bedded galvanised stell strip or wire armoured electric power cables ( heavy duty) 1100 Volts grade with stranded aluminium conductor of size 25 sqmm 4 core. Make Havells or equivalent

Supply , laying and testing cable XLPE insulated, screened, PVC bedded galvanised stell strip or wire armoured electric power cables ( heavy duty) 1100 Volts grade with stranded aluminium conductor of size 120 sqmm 4 core. Make Havells or equivalent

Supply , laying and testing cable XLPE insulated, screened, PVC bedded galvanised stell strip or wire armoured electric power cables ( heavy duty) 1100 Volts grade with stranded aluminium conductor of size 10 sqmm 4 core. Make Havells or equivalent

Supply and laying un rainforced precash concrate cable cover class LV type I flat size 250 mm x 150 mm x 40 and all as specified and as directed. Make Barat tile or equivalent

Supply and fixing Submerssible cable 3 core multi stranded copper conductor PVC insulated water proof ISI marked of size 6 sqmm all as specified and as directed. Make Finolx Havells, RR Cables

Supply and fixing Submerssible cable 3 core multi stranded copper conductor PVC insulated water proof ISI marked of size 4 sqmm and all as specified and as directed. Make Finolx Havells, RR Cables

Supply and fix in repairs of fountain LED light fittins with stand (Jumbo) 100% water proof restin filled multi colur auto colur charge 12 volt x 30 wattt (+3%) of type 9.9 30 y including making nesessary fixing arrangement with nuts, bolts and clamps, if necessary complete as specified and directed

Supply and Fix in repairs of water proof submersible LED IP68 3 Dynamic color changing light fittins. Including necessary fixing arrangement with nuts, botls and clamps if complete all as specified and directed. Make: AIXING or equivalent.

Dismantling and taking down unserviceable gun metal gate valve/globe valve 20mm dia from valve chamber/pipe line and all as specified and as directed by Engr-in-Charge

All as per Item No-13, hereinbefore but of size 25mm dia all as specified and as directed

Material and labour for gun metal gate valve both end screwed of size 20 mm dia all as directed by Engr-in-charge

All as per Item No-15 here in before, but of size 25 mm dia all as specified and as directed

Supply and Fix in repairs of Replacement of indication Neon lamps(R/Y/B) and all as specified and as directed by Engr-in-Charge

Supply and Fix in repairs of Replacement of auto manual switch and all as specified and as directed by Engr-in-Charge

Supply and Fix in repairs of Replacement of push button switch and all as specified and as directed by Engr-in-Charge

Supply & fixing in repair of MCCB 4 pole with neutral link 100 A rating, 25 KA with 80-100 thermal settings as outgoing feeders and all as specified and as directed by Engr-in-Charge. Make L&T, Havells.

Supply & fixing in repair of MCCB 4 pole 415 V adjustable type 200 Amps with breaking capacity 36 KA and all as specified and as directed by Engr-in-Charge, Make : Havells.or equivalent

Supply & fixing in repair of MCCB 4 pole 415 V adjustable type 250 Amps with breaking capacity 36 KA and all as specified and as directed by Engr-in-Charge.Make Havells or equivalent

Supply & Fixing in repair of OFF load change over switch 200 A 4 pole 415 V and all as specified and as directed by Engr-in-Charge Make: Havells or equivalent.

Supply & Fixing in repair of on load change over switch 630 A , 4 pole front handle SS enclosure, double end and all as specified and as directed by Engr-in-Charge. Make: Havells or equivalent.

Taking down the unserviceable changeover switch after disconnecting from LT panel board, supply and fix new on load type Changeover SS enclosure 415 volts 200 amps 4 pole 50Hz including necessary fabrication , addition and alterations all as specified and directed. Make: Havells or equivalent.

Taking down the unserviceable changeover switch after disconnecting from LT panel board, supply and fix new on load type Changeover SS enclosure 415 volts 400 amps 4 pole 50Hz including necessary fabrication , addition and alterations all as specified and directed. Make: Havells or equivalent.

Supply & fixing in repair of euroload changeover switch 63A 4pole complete and all as specified and as directed by Engr-in-Charge Make: Havells or equivalent

Supply and fix of automatic change over switch 100 Amps 4 pole 415 volts complete and all as specified and as directed by Engr-in-Charge make : Havells or equivalent

Cutting and cleaning the grass wild vegetation once in a quarter, from roots, shapings shrubs, bush, undergrowth, roots, removing vegetation over the fencing and removing rootas, removing, vegetation over the fencing and removing unwanted materials to a distance exceeding 400 mtrs away from the pumpe house at NPH, 1 & 2 Pump house/ water supply installations and arround UG sumps as well as OH rservoirs alongwith surrounding areas,complete and all as specified and as directed by Engr-in-Charge

M & L for two coats of synthetic enamel paintings with approved colours to pumpsets including preparation of old surfaces of pump capacity of various sizes of centrifugal and monoblock pumpsets, complete and all as specified and as directed by Engr-in-Charge

Supply and fix in repair bus bar box of size 450x300x500mm fabricated by 3mm thick MS sheet outdoor type , dust/vermin proof, mounted/ fixed on angle iron frame of MS equal angale size 40x40x6mm of height 0.90 mtr, erected in ground with PCC foundation 1:4:8 with 40mm stone aggregateand including aluminium bus bar flat of size 50x6 mm fixed as bus bar over the insultors, sleeved for three phase and neutral, provision of one MCCB 63 Amps 4 Pole, 415 AMps, 50 Hz of breaking capacity 16 KA and spray painting the box with two coats of enamel paint over a coat of metal primer incuding necessary excavation, PCC for fixing the box compelete all as specified and directed by Engr- In Charge

Fabricate, supply and fix cubicle panel board out door type size 1.20mtr x 1.30 mtr made out of 2mm thick MS sheet, front door hinged and lockable type and vermin proof complete with 75 x 40x 6mm "Base" channel iron frame for base of the cubicle panel board fixed with suitable size of bolts nut & washer etc incluing power coat. the follwoing items are to be fixed in cubicle panel board complete , sufficient space for spare starter with cable alloy and suitable size of bus bar & bus bar chamber intarnal wiring with suitable lugs cbale numering testing and commisssioing etc and necessary civil works for fixing of panel board and consisting of the following items. (1) MCCB 4 Pole, 415 V adjustable ype 160 amps with breaking capacity 35 KA -01 No (2) MCB TP 415 63 amps with 10 KA-02 Nos (3) Automatic star delta starter for 50 HP for motor, type MU-G50,415 V-01 No (4) indicator lamps -01 SET (5) Digital MDM meter 250/5CT CL:01 -1 SET

Repairs/Replacement of Aquafit dosing system which contains preparation tank, service tank, pipelines shaft impeller, motor and dosing injector for chlorination of water to the pump houses as under Make fit or Eqvt

Preparation tank 65 mm , Height 975mm m MOC:FRP

Service tank 480mm, Height 57mm , MOC: FRP

PVC pipeline with fiter is fitted from preparation tank to service tank and contains the including items such as valve, push fit, upvc sch 40, ball valve, Y strainer, union, FTA, MTA Elbow

Dosing injector (digital)

Shaft & impeller (shaft dia-32 mm, impeller dia 80mm)

Motor agitator 120 w single phase, 220 V AC having 900 RPM

(a) Chemical analysis and Physical observations:- Description:- White granules Granular size:- (Mess passing through-100 BSS): 1:1(+ 0.1%) Water/ Moisture: 5.00(+0.2)% Other insoluble Calcium salt:- 1.1(+0.1)% Mercury and other Heavy Metal contaminants:BDL.The chlorination chemical must contain appropriate quantities of dispersants/corrosion inhibitors to prevent encrustation/scaling in distribution systems (b) Strength of Items of quantity of chlorination chemical required to obtain free chlorine of 1 PPM per one lakh liters of water: Requirement must be 125-200 grams per one lakh liter of water to achieve 1 PPM Av.Cl at injection point( Site and raw water quantity variation may apply additionally) (c ) Stability:- Projected shelf life of chlorination chemical must be one year with minimal loss of chlorine (d) Handling of chlorination chemical for regular chlorination: (i)Operational considerations: Must be safe to use in terms of level of insoluble components. There must be no risks relating to encrustations in equipment and pipe lines, no sludge generation, no hard water scaling in supply water. (ii) Operator health considerations: Chlorination chemical must contains acceptable levels of granular size to avoid risks to operators from health safety point of view. (e) Safety & health hazard aspects on usages of chlorination chemical for regular drinking water chlorination: Mercury and other Heavy Metal contaminants in chlorination chemical must be Below Dectectable Limit(BDL),based on which the product must be considered safe to use from human health safety point of view and freedom from toxicity when used in drinking water chlorination in recommended dosage.

Supply only of Soda Ash

Cleaning and removing of all scales and dirt etc from PVC/RCC/ tanks and from mouths of circulating pipes etc capacity not exceeding 250 Ltrs all as specified and directed by Engr-in-Charge.

All as per item No.36 but capacity exceeding 250 Ltrs and not exceeding 500 Ltrs

All as per item No.36 but capacity exceeding 500 Ltrs and not exceeding 1000 Ltrs

All as per item No.36 but capacity exceeding 1000 Ltrs and not exceeding 2000 Ltrs

All as per item No.36 but capacity exceeding 2000 Ltrs and not exceeding 5000 Ltrs

All as per item No.36 but capacity exceeding 5000 Ltrs and not exceeding 10000 Ltrs

Taking down 15mm GI steel tubing including fittings and fixtures including cleaning for refixing or removal to store all as specified and directed.

All as per item No. 42 but 20mm GI Steel tubing

All as per item No. 42 but 25mm GI Steel tubing

All as per item No. 42 but 40 mm GI Steel tubing

All as per item No. 42 but 50 mm GI Steel tubing

Re-fixing old steel tube GI 15mm obtained from Sl Item No 7 above including cleaning/scaling and making connections in new or old position fixed on walls/ceiling/floor etc all as specified and directed.Note: The rate quoted shall be inclusive of providing necessary fittings for refixing the pipe

All as per item No. 47 but 20 mm GI Steel tubing

All as per item No. 47 but 25 mm GI Steel tubing

All as per item No. 47 but 40 mm GI Steel tubing

All as per item No. 47 but 50 mm GI Steel tubing

Supply and fixing of GI tubing medium grade 15mm dia with all fittings complete to walls/ceilings or laid in floor all as specified and directed.

All as per item No. 52 but 20 mm GI Steel tubing

All as per item No. 52 but 25 mm GI Steel tubing

All as per item No. 52 but 40 mm GI Steel tubing

All as per item No. 52 but 50 mm GI Steel tubing

Dismantling of PVC water tanks and supplying and fixing of 500 Litres capacity PVC rotational moulded polyethylene water storage tanks (cylindrical vertical with closed tap) hoisted and fixed in position all as specified in SSR Part 1. Make : Sintex ISI marked or equivalent ISI marked..

All as per item No. 57 but of capacity 1000 Ltrs

All as per item No. 57 but of capacity 2000 Ltrs

All as per item No. 57 but of capacity 5000 Ltrs

All as per item No. 57 but of capacity 10000 Ltrs

Supply and fixing in replacement of PVC lid (Cover) for PVC water tank of different capacity mentioned above all as directed by Engr-in-Charge.

M/L in replacement of ball valve for 25mm dia, high pressure of PTMT with exoxy quoted aluminium rod and high density plastic ball screwed for iron pipe and fixed all as specified and directed.

All as per item No. 63 but 20mm dia

Repairs to Ball valve set any size by replacing the unserviceable PVC balls, rod, GI socket, long screw etc to arrest the overflowing of service tanks all as directed

S & L in replacement of CPVC pipe size 25 mm and CPVC SDR 11 fittings in trenches complete with necessary fittings complete all as specified and directed by Engr in Charge

S & L in replacement of CPVC pipe size 32 mm and CPVC SDR 11 fittings in trenches complete with necessary fittings complete all as specified and directed by Engr in Charge

ANAND REFRIGERATION

chowdeshwariconstructionco

Lakkaiah Rangaswamy

SRI AYYAPPA ENTERPRISES

SAPTHAGIRI CONSTRUCTIONS

JM Engineering

SRI GANESH ENTERPRISES

eurekaenterprises

M/s BHOOMI ELECTRICALS