Borewell & Tubewell Works Tenders

Surging of existing tube well with chemical treatment and bucket wash (prior to use of compressor machine) and developing the tube well with compressor machine at least 3 (three) days at 8 (eight) hours per day till the yield is obtained at least by 75% of the total specified yield of the tube well (measured by 'V' notch tank) and draw down is within the permissible limit of 10% variation and water so obtained after such washing and developing will be free from sand and bacteria for which test report from the Public Analyst is to be obtained. (The rate is inclusive of all labour and materials including hire charges of tools and plants and cost of materials.) (a) For tube well from 40 mm to 100mm top enlarged to have yield from 1500 to 3000 gallons per hour as per size and yield.

Drilling/Boring of 125 mm diameter Tubewell by Air Rotary Drilling Rig Unit suitable for lowering of MS casing of 125mm diameter in suitably drilled bore hole as per specifications laid down in IS 2800 (Part-l) with upto date amendments .The job is to be done in all kinds of soils, boulder, rocks, collapsible strata, saturated soils,artisan conditions by ODEX/DTH attachments and exploration of ground water by tapping sufficient aquifer zones. The job includes the cost shifting of drilling accessories, tools, bits, casing shoe, consumables like fuel, lubricants, skilled and unskilled labours and other unforeseen items. Development of Tube well with backwash method with air compressor of minimum capacity 1000 CFM (300PSI air delivery system) with suitable arrangements till well is thoroughly developed in all respects

Disinfection of tube well using bleaching powder solution as per the direction of the Engineer in Charg including the cost of bleaching powder and labour etc. complete

PWD Integrated Building BSR 2022 Part "A" Part 1- Tube Well Construction to tube well from ground levels and upto 100 meter depth and above to accommodate housing and assembly pipe of following sizes in all types of alluvium strata by percussion/ rotary drilling method and with gravel as per IS : 4097-1967 and packing as per IS : 2800 ( Part I & II ) 1979 as amended upto date ( the work includes the cost of gravel & its primary packing and packing during development. lowering of housing & strainer assembly pipes, with supply and wrappiing of coir rope, wherever necessary, for arresting fine sand particles. The work will not include cost of housing pipe and strainer pipe assembly and development work, but work would be completed after obtaining sand free water.) 150 mm Nominal Bore.

PWD Integrated Building BSR 2022 Part "A" Part 1- Tube Well Construction to tube well from ground levels and upto 100 meter depth and above to accommodate housing and assembly pipe of following sizes in all types of alluvium strata by percussion/ rotary drilling method and with gravel as per IS : 4097-1967 and packing as per IS : 2800 ( Part I & II ) 1979 as amended upto date ( the work includes the cost of gravel & its primary packing and packing during development. lowering of housing & strainer assembly pipes, with supply and wrappiing of coir rope, wherever necessary, for arresting fine sand particles. The work will not include cost of housing pipe and strainer pipe assembly and development work, but work would be completed after obtaining sand free water.) 150 mm Nominal Bore.