REPAIR/REPLCEMENT OF GI/CI PIPE LINES INCLUDING OF VALVES AND MAINTENANCE OF WATER TREATMENT PLANT IN DOMESTIC AND TECH AREA AT AFS 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.

Dismantling and taking down the clogged/unserviceable GI pipe 15mm dia from trenches/floor/wall all as specified and as directed. Note: Excavation, refilling & removing surplus soil shall be measured and paid separately.

All as per Item No 04 hereinbefore but of size 20mm dia all as specified and as directed.

All as per Item No 04 hereinbefore but of size 25mm dia all as specified and as directed.

All as per Item No 04 hereinbefore but of size 40mm dia all as specified and as directed.

All as per Item No 04 hereinbefore but of size 50mm dia all as specified and as directed.

All as per Item No 04 hereinbefore but of size 80mm dia all as specified and as directed.

Taking up cast iron water mains including all fittings with spigot and socket ends and lead joints including burning out joints and recovering lead of pipe of size 100 mm dia all as specified and as directed.

Taking up cast iron water mains including all fittings with spigot and socket ends and lead joints including burning out joints and recovering lead of pipe of size 150 mm dia all as directed.

Material and Labour for GI pipe 15mm dia medium grade laid in trenches/fixed on wall/floor all as specified and as directed. Note: Excavation, returning filling & removing surplus soil shall be measured and paid separately.

All as per Item No 11 hereinbefore, but of size 20mm dia all as specified and as directed

All as per Item No 11 hereinbefore, but of size 25mm dia all as specified and as directed

All as per Item No 11 hereinbefore, but of size 40mm dia all as specified and as directed

Material and Labour for GI pipe 50mm dia medium grade laid in trenches/fixed on wall/floor all as specified and as directed. Note: Excavation, refilling & removing surplus soil shall be measured and paid separately.

All as per Item No 15 hereinbefore, but of size 80mm dia all as specified and as directed

Supply laying jointing and testing of Ductile pipe iron class K-7 socket and spigot type of size 100 mm dia all as specified and as directed by Engr-in-charge

Supply laying jointing and testing of Ductile pipe iron class K-7 socket and spigot type of size 150 mm dia all as specified and directed by Engr-in-charge

Material and labour for DI specials for bends (any type, radius and angle) tapers any type,(straight ,bend, increasing, decreasing, or double socket etc) Tee pieces single branch."Y" junction, double branch, cross (all sockets or socket and spigot) collars, caps and plugs up to 150mm bore Di pipes all as specified and as directed.

Material and labour for jointing of DI pipes with rubber tyton joints all as specified of size 100 mm dia all as specified and as directed.

Material and labour for jointing of DI pipes with rubber tyton joints of size 150 mm dia all as specified and as directed.

Dismantling and taking down unserviceable sluice valve 150mm dia from valve chamber/pipe line all as specified and as directed by Engr-in-Charge

All as per item no.23 hereinbefore but of size 100 mm dia all as specified and as directed

All as per item no.23 hereinbefore but of size 80 mm dia all as specified and as directed

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

All as per Item No-26, hereinbefore but of size 25mm dia all as specified and as directed

All as per Item No-26, hereinbefore but of size 50mm dia all as specified and as directed

Material and labour for sluice valve 150mm dia both end flanged PN 1.0 with fixing arrangements such as bolt/nuts, rubber packings etc all as specified and as directed.

All as per item No.29 hereinbefore but of size 100 mm dia all as specified and as directed

All as per item No.29 hereinbefore but of size 80 mm 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-32 here in before, but of size 25 mm dia all as specified and as directed

All as per Item No-32 here in before, but of size 50 mm dia all as specified and as directed

Dismantling and taking out the Unserviceable 50 mm dia column pipe from the bore well/wells.

Supply and Fixing of GI column pipe heavy grade 50mm dia with ISI mark with GI heavy socket at one end all as specified and as directed

Material and labour for removing unserviceable lead joints from CI pipe line and making proper run lead joints of size 150mm dia complete including necessary excavation, refilling and removing the surplus soil all as specified and as directed.

All as per Item No-37, here in before but for size of 100mm dia pipe line all as specified and as directed.

All as per Item No-37, here in before but for size of 80 mm dia pipe line all as specified and as directed.

Dismantling and unscrewing the bolt/nuts, taking out the suction pipe along with unserviceable foot valve of 150mm dia all as specified and as directed.

All as per Item No-41, here in before but of size 100 mm dia all as specified and as directed.

All as per Item No-41, here in before but of size 80 mm dia all as specified and as directed.

Material and labour for CI foot valve flanged type of size 150mm dia complete with bolts/nuts, washers, rubber packing etc all as specified and as directed.

All as per Item No-43, here in before but of size 100 mm dia all as specified and as directed.

All as per Item No-43, here in before but of size 80 mm dia all as specified and as directed.

Dismantling and taking down unserviceable Non return valve 100 mm dia from pipe line all as directed by Engr-in-Charge

All as per Item No-46, here in before but of size 80 mm dia all as specified and as directed

Material and labour for Non return valve 100mm dia both end flanged with fixing arrangements such as bolt /nuts, rubber packing’s etc all as directed.

All as per Item No-48 but of size 80 mm dia all as specified and as directed.

Chemical and Bacteriogical analysis of water as per IS-10500, sample collected from bore wells/shallow wells/BWSSB water /user point all as directed by Engr-in-Charge. Note- Water to be tested once in 6 month and approved at NABL LAB.

Construction of valve chamber of size 900mm x 900mm x 900mm internal size suitable for sluice valve, with PCC (1:4:8) type (D2) for foundation one brick wall in cement mortar (1:4) PCC (1:2:4) type B1 for coping rendering in CM (1: 4) 15 mm thick including provision of mild steel sheet cover 3.15 mm thick on 40 x 40 x 6 mm angle iron frame work with two coat of synthetic enamel black paint over a coat of red oxide primer and locking arrangement including necessary excavation, earth work and demolishing the damaged valve chamber and removing debris as directed, all as specified and as shown on drawing.

S&F High strength Calcium based granular chlorination chemical of following Specifications:- Make: Declicab/Aquafit /PURI chlor (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.

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