REPAIR / MAINT / IMPV OF EXTERNAL WATER SUPPLY SYSTEM, CLEANING OF WATER RESERVIORS AND ALLIED WORKS AT JALAPAHAR UNDER AGE(I) DARJEELING

Amount

M&L for cutting existing GI Water Tubing of size 40 to 80mm bore for alteration or addition including screwing / threading and jointing with suitable size GI/DI Special, complete all as specified and directed by Engineer-in-Charge.

S&F in repairs or in new position cast iron sluice Valve ISI mark of size 80 mm bore confirming to IS 14846-2000, flanged ends drilled having steel spindle with cast iron wheel at top complete with nuts, bolts, washers and gaskets or necessary fittings to control water flow in 80mm pipeline, complete all as specified and as directed.

Demolition of cement concrete (unreinforced) in ground floor and pavings not exc 15 cm thickness (below or above ground level), complete all as specified and directed.

M&L for hardcore using broken stone or boulders of gauge n exc. 63mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rammed to a true surface, complete all as specified and directed.

M&L for plain cement concrete (1:4:8), type D-2, (using 40mm graded stone aggregate) as in foundations, filling and mass concrete including necessary formwork, complete all as specified and directed.

M&L for brickwork with fly ash bricks (old size bricks), straight or curved on plan exc 6m mean radius, built in cement mortar(1:6), complete all as specified and directed.

M&L for rendering 15mm thick in cement mortar (1:4) with water proofing compound @ 3% by weight of cement or in the manner specified by the manufacturer and in the proportions indicated on fair faces of brick work or concrete surfaces, finished even and smooth (without using extra lime or cement), complete all as specified and directed.

S&F in repairs GI flange of size 80mm bore, threaded type, ISI marked, complete all as specified and directed.

M&L for pipe line leakage repairing work of any size or specification after disconnecting the near by joint and replacing the GI Fitting , short pieces as required and refixing the same, complete all as specified and directed.

S&F in repairs or in new position Cast Iron Air Release Valves with single air Outlets, conforming to IS 14845 of size 50 mm dia bore and fixing up in Cast Iron Water supply mains of size 50 mm dia., complete all as specified and directed.

Taking out old unserviceable/corroded out valve pit MS cover of valve pit size 90cm x 90cm (L x B) and replace same with valve pit cover made of 2-3mm thick MS sheet welded to 40 x 5mm equal angle at sides and diagonals including 40 x 5mm equal angle for making resting base frame, both resting frame and cover should be hinged at two points along one side, including necessary locking arrangement and hash bolt, complete all as specified and directed. Note: Item shall be actually weighted and paid.

M&L for applying two coats of synthetic enamel paint including preperation of old painted existing surfaces, complete all as specified and directed.

M&L for two coat painting of pipeline 80mm by using red/yellow/ sky blue synthetic enamelled painting after scrapping / cleaning, complete all as specified and directed.

Providing & Applying Two coats of Aqua Arm Top Guard inside of the wall & floor of the tank, a two components ready to use polymer modified cementatious coating . First Coat should be applied horizontzlly and second coat should be applied verticallyThe thickness of coating shall not be less than I .5mm. complete all as specified and directed. Note: Work to be executed by the authorized applicator of manufacturer only, complete all as specified and directed.

Applying two coats Sikagard 67 or AquArm Tank Coat, a water based epoxy coating certified for portable water on all over the concrete surface from inside.Apply the first coat by brush allow it to dry for 6-8 hrs and then apply 2nd coat and allow it to cure complete 24 hrs The coating shall be applied using brush application. The Thickness after two coating should not be less than 500 microns complete all as specified and directed. 195.00 Sqm . Note: Work to be executed by the authorized applicator of manufacturer only. Complete all as specified and directed.

M&L for cleaning Semi-under ground RCC Water reservoir of capacity 30000 Gallons, complete all as specified and directed (a) Draining out reserved water by openeing drain out valve/dewatering system. (b) Removing all scale, dirt mud inside the tank by using TERBACK G10 chemeical and scrubbing the wall of tank. (c) Cleaning inside surfaces of the tank with fresh water by high speed jet pump. (d) First bacteria screening for sterlisation by using TERBACK G5 (e) Cleaning the floor of the water tank by heavy duty industrial vaccum cleaner. (f) Second bacteria screening for sterilisation by using UV rays. (g) Third bacteria screening for sterilisation by using TERBACK G65. Notes: (i) On completion sterilisation certificate to be submitted to the Engineer-in-Charge. (ii) Re-writing the letter not exceeding 25 cm in high as tank cleaned on indicating, date, month and year of cleaning with synthetic enamel paint white in colour on black background. (iii) The quoted unit rate is included for removal of mud , grits and deposits etc properly from site of work.

All as per Ser Item No. 16.00 above for Steel Water reservoir of capacity 5000 Gallons, complete all as specified and directed.

All as per Ser Item No. 16.00 above for Steel Water reservoir of capacity 14500 Gallons, complete all as specified and directed.

All as per Ser Item No.16.00 above for Steel Water reservoir of capacity 20000 Gallons, complete all as specified and directed.

Note 1:- (Applicable for all parts/items) : The bidders/contractors are advised to read tender document, all drawings & all corrigendum / amendments and general condition of contracts before entry / quoting the rates. Note 2:-The contract sum shall be arrived at after deducting amount of schedule of credit from the total quoted amount.

TSHERING WANGYAL BHUTIA (BID ID -3088879)

Damdoo Bhutia (BID ID -3089025)