REPAIR/MAINT/REPLACEMENT OF WATER SUPPLY RISING MAIN PIPE LINE AND ITS ALLIED WORKS AT VARIOUS LOCATIONS AT ZAKHAMA MILITARY STATION

Amount

Excavation in trenches not exc 1.5 m in depth and not exc 1.5 m wide for taking out/laying CI/GI pipes and getting out in hard/dense soil complete all specified and directed.

Removing excavated soil at a distance not exc 50 m and deposited where directed complete all as specified and directed.

Returning,filling in including spreading, leveling, watering and well ramming in layers not exc 25 cm complete all as specified and directed.

Taking out unserviceable/defective/damaged/blockage CI/GI pipe 100 mm bore steel water tubing,sorting out serviceable pipe fitting for reuse and cleaning the pipe including fitting and removing away all unserviceable pipe from site, complete all as specified and as directed. (Note: Exacavation and earhwork shall be measured and paid for separately.)

Taking out unserviceable/defective/damaged/blockage CI/GI pipe 150 mm bore steel water tubing,sorting out serviceable pipe fitting for reuse and cleaning the pipe including fitting and removing away all unserviceable pipe from site, complete all as specified and as directed. (Note: Exacavation and earhwork shall be measured and paid for separately.)

M & L for CI Pipes of 100 mm Bore S/S including special Class LA laid in trenches including rubber gasket joints complete all as specified and directed.

Supply, laying and jointing of centrifugally cast (Spun) ductile iron pressure pipes with socket and spigot end , Dia 100 mm , class K-9, confirming to IS 8329/2000 (latest revision) -blast furnance slag cement with portland cement properties suitable for push-up jointing with inside cement mortar lining with internal zinc mettalic coating and external black biuminous coating , duly ISI marked and making joints using EDPM/ nitrile rubber gaskets in trenches/under road/surface/ UG etc. and complete all as specified and directed. Rates are inclusive of EDPM/ nitrile rubber gaskets. Note : Excavation and earth work will be paid seperately under repective item of the schedule.

Laying only and making joints for existing serviceable , DI pipe 150 mm bore, class K-9, spigot and socket ends after taking out the existing one in between Source 1 and source 2 and testing complete all as specifed and directed.Rates are inclusive of EDPM/ nitrile rubber gaskets. Note : (a) Excavation and earth work will be paid seperately under repective item of the schedule. (b) Serviceable pipe recd under respective item of the schedule will be used for laying. DI pipe will be issued by the department.

Laying only and making joints for existing serviceable , DI pipe 150 mm bore, class K-9, spigot and socket ends after taking out the existing one in between Source 1 and source 2 and testing complete all as specifed and directed.Rates are inclusive of EDPM/ nitrile rubber gaskets. Note : (a) Excavation and earth work will be paid seperately under repective item of the schedule. (b) DI pipe will be issued by the department. Rates are inclusive of transporting the pipe from MES store/ pump house No - 04 to the site.

S&F fittings for Spigot and socketed DI pipes as per IS 9523/2000, class K-12, PN-10, inside cement mortar lining with internal zinc mettalic coating and external black biuminous coating for replacing the damaged /unsv CI/GI fittings ,bends(any type any radius/angle) straight,bend,increasung or decreasing double sockets) Tee pieces single branch, cross(all sockets and spigot collars etc) for the 100/150 mm dia of pipes and complete all as specified and as directed.

Taking out sluice valves/NRV/Air release valve from valve pit chambers and main lines for the following sizes complete all as specified and directed:-

(a) Air release valve 150 mm bore

(b) Air release valve 100 mm bore

(b) Non return valve 100 mm bore

Supplying, fixing and testing of cast iron Non return valve, nominal size DN-100 mm, and as per relvent IS code both ends flanged in existing line, complete all as specified and directed. Note : (a) Rates are inclusive of cutting of pipe (if required). (b) Suitable size flanges for existing pipe line, Joints and jointing materials (nut, bolts etc.) shall be included under this item.

Supplying, fixing and testing of cast iron air release valve, Suitable for 100 mm dia pipe, double chamber, as per IS-14845 complete all as specified and directed by Engr-in-charge. Note : Suitable size flanges for existing pipe line, Joints and jointing materials shall be included under this item.

Supplying, fixing and testing of cast iron air release valve, Suitable for 150 mm dia pipe, double chamber, as per IS-14845 complete all as specified and directed by Engr-in-charge. Note : Suitable size flanges for existing pipe line, Joints and jointing materials shall be included under this item.

M&L for Cutting the existing CI/DI pipe line by necessary tools without damaging the pipe lines as required up to 150 mm dia for necessary insertion of new fitting or replacing of pipe etc complete all as directed. (Note- The rate for earth work and new specials will be paid seperately under respecitve items of the schedule).

Construction of brick masonry valve pit of size 1200 mm x 1200mm x 900 mm (internal dimensions) with one brick thick wall in cement mortar 1 : 4 on 100 mm thick PCC 1:4:8 type D2 (using 40mm graded broken stone aggregate) as in foundation lean concrete, including PCC 1:3:6 type C-1 (using 20mm graded crushed stone aggregate) as in benching and coping and 10mm thick cement plaster in CM (1:4) internally and externally upto 15cm below ground level providing valve pit cover 40x40x6mm angle iron frame all-round fixed by means of 4 Nos holdfast 150mm long made out of flat iron 40x6mm embedded in PCC block (1:2:4) type B-1 (using 20mm graded crushed stone aggregate) of size 230x200x100mm incl provn of hinges welded with angle iron frame and MS cover 3mm thck sheet, MS handle of suitable length and size welded with MS cover and suitable locking arrangement and applying two coats of synthetic enamel paint over a coat of red oxide primer including necessary excavation and earth work in soft/loose soil complete all as shown on drawing and as specified.

J C DUTTA

Shri B K Ukil

ZEVIZO ZUTSO

MS SADHNA RAHUL

thepfuralie zutso

Shri Atoshe Tuccu