Deep drilling, development and stabilization of tubewell upto 300 mtrs BGL, including completion of tubewell by way of sealing and providing gravel feed pipes to prevent contamination by surface water flow into the tube well, by Dual Rotary/Direct Ro

Amount

Deep drilling, development and stabilization of tubewell upto 300 mtrs BGL, including completion of tubewell by way of sealing and providing gravel feed pipes to prevent contamination by surface water flow into the tube well, by Dual Rotary/Direct Rotary Method at Kot in Raipur Domana Constituency of District Jammu

Clearing of site by way of bush cutting, making approach road, shifting of machinery and allied material, preparation of site, proper leveling for installation of machinery.

Drilling of gravel packed bore hole of 530mm diameter and lowering of liner assembly consisting of blind and strainer pipes of 300 mm dia. in all types of strata to suite geological requirements and conditions. i) From 0 to 200 mts BGL

From 200 to 250 mts BGL

From 250 to 300 mts BGL

Providing and lowering of liner assembly after welding upto the desired length and design approved by the competent authority. (The quantity in BOQ is tentative and payment shall be made on actual quantity consumed)

Providing of pea shaped gravel as per IS-4097 of 1967 with latest amendments for gravel packing of tubewell shrouding during lowering of liner assembly and development of tubewell. (To be charged as per actual)

Development of tubewell by air compressor of 1400 CFM & 350 PSI capacity to give clear water free from sand and other impurities.

Stabilization and yield testing of tubewell by using V. T. Pump / Submersible Pump Set as per IS-Code-Part I 2800 of 1991 & IS-2800 Part II of 1979 reaffirmed 1999 with upto date amendments.

Cost for slotting of MS Casing pipe (To be charged as per actual) 300mm dia

Fabrication providing / fitting of steel supporting structure for clamping of tubewell housing using 2 No. parallel ISMB-250 of 5 mtr length each and M.S. angle 40x40x6mm and M.S. plate 10mm thick with 2 Nos cement concrete blocks of size 1.00mtr x 1.00mtr x 1.00 mtr 1 No. each of both ends. Note: The job includes well capping after yield test in presence of the representative of the department.