PROVN OF BOREWELLS FOR WATER SUPPLY SCHEME WITH ALLIED INFRA AT UPLONA GRN UNDER GE 969 EWS , JOB NO- 15/CORPS/MAJ WK/AMWP-03/2019-20

Amount

M&L for Drilling bore hole in alluvial strata for construction of deep borewell of 350/300/250mm dia with reverse rotary rig drilling machine complete with drilling bits, drill shaft and all other accessories, complete with transportation, errection of camp at side and removal of all tools and plant on completion of borewell work all as required and all as specified and directed (Location :- Uplona Grn) Note :- 1. Two Nos trial bore will be carried out.The location for feasibility of water shall be recommended as per CGWB department report.However,the tenderer may shift the location based as available expertise and data. 2. Trial Bore and necessary fuel, lubricant, and chemical extra required for construction work shall be arrange by contractor and cost of these items shall be deemed to be included in quoted rates. 3. If so desired by the tenderer trail bore not exceeding 125 mm dia may be drilled to assess the strata/yield in the area.The rates for the same are deemed to be included in the item No 1.00 of Sch 'A'/BOQ

All as per Srl Item No 1.00 here-in-before above from Ground level to 60 mtr depth all as specified and directed.

All as per Srl Item No 1.00 here-in-before above but depth 61 mtr to 120 mtr depth below ground level all as specified and directed.

All as per Srl Item No 1.00 here-in-before above but depth 121 mtr to 180 mtr depth below ground level all as specified and directed

All as per Srl Item No 1.00 here-in-before above but depth 181 mtr to 250 mtr depth below ground level all as specified and directed

M&L for development of bore with reaming 550mm into borewell including supplying, assembling, lowering and fixing in positioning using MS sleeves 200mm long made out of 8mm thick MS plate, suitable for 250/200mm MS pipe, welding in position, necessary cleaning, painting complete all as specified and directed. Note :- MS Sleeves/casing pipe shall be measured and paid separately

Reaming upto 550mm for 60 RM from ground level complete all as specified and directed.

Reaming upto 550mm from depth exceeding 61 meter to 200 meter complete all as specified and directed.

Reaming upto 550mm from depth exceeding to 201 meter to 250 meter complete all as specified and directed.

Casing pipe as per IS-4270 of 250mm dia and thickness 8mm complete all as specified and directed.

Casing pipe as per IS-4270 of 200mm dia and thickness 8mm complete all as specified and directed.

Casing pipe as per IS-8110 of 200mm dia slotted pipe and thickness 8mm complete all as specified and directed.

M&L for Electro Logging of Borewell for designing and lowering of pipe assembly based on logging report/graph all as specified and directed by Engr-in-Chage

M&L for Reducing socket made out of MS plate 12mm thick, size 250/200mm bore MS pipe complete all as specified and directed.

M&L for Bail plug made out of MS housing pipe 200mm dia, wall thickness 8mm, one and half mtr long blocked with 10mm thick MS plate with bottom hook all as specified and directed by Engr-in-Charge.

M&L for Centre Guide made of MS flat iron (40 x 6mm) at an interval of every six meters depth for 250/200mm bore pipe all as specified and directed by Engr-in-Charge.

Supply and filling of cleaned and washed, pea gravel of size 3mm to 6mm packing around the pipe bottom to ground level all as specified and directed by Engr-in-Charge.

M&L for MS clamp suitable for 250mm dia housing pipe made for 150 x 20mm thick plate including bolts/nuts and washers of required size complete all as specified and directed by Engr-in-Charge.

M&L for MS Sleeves 10mm thick suitable for 200mm MS pipe welding at joints, width 200mm complete all as specified and directed by Engr-in-Charge.

M&L for MS Sleeves 10mm thick suitable for 250mm MS pipe welding at joints, width 200mm complete all as specified and directed by Engr-in-Charge.

M&L for Well Cap made out of 6mm thick MS plate suitable for 250mm housing pipe to provide cover at top of borewell complete with locking arrangement using 25mm dia, 400mm long MS bolt slotted through the cap and casing pipe with 1 No lock complete all as specified and directed by Engr-in-Charge.

Development of borewell with air compressor not less than 400 PSI compressor over pumping unit till sand free water obtained and testing the yeild for duration as under all as specified and directed by Engr-in-Charge Note :- Contractor has to provide own DG Set/Prime mover to run compressor and over pumping at site.

For first 24 Hrs by using air compressor all as specified and directed by Engr-in-Charge.

For subsequent 48 Hrs by over pumping method by using air compressor all as specified and directed by Engr-in-Charge Note :- All type of T&P and transportation required for development of bore shall be arrange by the contractor and cost of these items shall be deemed to be included in quoted rates.

Plain cement concrete 1:2:4 type B-2 (using 40mm graded crushed stone aggregate) as in foundations, filling and mass concrete, complete all as specified.

Supplying and fixing medium grade ISI Marked GI tubing of size 80 mm dia for feeding gravels and GI plug and socket fixed on top complete, all as specified and as directed.

M&L for strata sample box with glass cover 3mm thick and having minimum internal dimension 1000mm x 150mm x 100mm made out of Shisham 1st class hard wood planks 20mm thick with hinges staple including painting two coats of synthetic enamel paint over one coat of primer complete with soil sample placed in position of 200mm wide made with wood planks 20mm thick. The number of portion may vary with type of soil strata met and over all length of the bore and can be increased beyond 1m x 150cm all as specified and directed by Engr-in-Charge.

Yield test for the borewell by continously for 16 hours to determine using `V' Notch constructed at site all as specified and directed by Engr-in-Charge Note :- Chemical/bacteriological analysis and potability test of water obtained from borewell shall be done from approved lab and submitting the report in triplicate shall be deemed to be included in quoted rate.

M&L for Tripod made out of heavy duty GI Pipe 80mm, (length of GI pipe 3 Mtr Each) suitable for 2 ton capacity with nut & bolt and hook for suitable size complete all as specified and directed by Engr-in-Charge.

S&F Chain Pulley Block 2 Ton capacity with heavy duty chain suitable for working 3 Mtr above gound level, chain 10mtr long (load chain dia 6mm ) all as specified and directed by Engr-in-Charge.

Supply, installation, testing and commissioning of Submersible pump, electric driven 415 V,and 100 A,TP suitable for 200 mm dia bore well ( Casing pipe size 200 mm) complete 20 HP, LPM 500, Head 110 Mtr including 10mm thick stainless steel rope (length of rope 60 Mtr) with clamp for holding submersible motor pump complete all as specified and directed .

Supply and fixing submersible cable of size 25 Sqmm 3 Core copper conductor alongwith star delta starter suitable for 20 HP Submersible Pumping Set complete all as specified and directed.

Supply and lowering in borewell, MS ERW column pipe 80mm bore in 3 mtr length both end flanged with MS flanges 10mm thick with cut for passing the submersible cable and four no of holes 10mm dia with suitable size of covering nuts, bolts, washers and rubber gasket complete all as specified and directed. Note :- All arrangements and T&P required for lowering the column pipe in the bore shall be made by the contractor under their own arrangement at no extra cost.

S&F Non return valve of size 100mm ISI marked including complete fitting item with jointing materials such as nuts, bolts, washers and rubber gasket etc of suitable size all as specified and directed.

Supply and fixing Cast Iron sluice valves for 100mm nominal bore (long body) with cast iron drilled flanged ends (integrally cast) class PN 1.6 horizontal type conforming to IS-14846:2000 (ISI marked) with stainless steel spindle, brass nut and iron wheel head including jointing material complete such as rubber fibre board insertion packing ring with requisite number of nuts, bolts and washers of required size etc all as specified and directed.

Supply and fixing pressure gauge 4 dial 0-21 Kgs rating with ball valve all as specified and directed by Engr-in-Charge.