Tender For Surging And Development Of Big Dia Tubewells (14 Nos.) By Carrying Out Surging And Back Blowing Of Existing Tube Well Including Installation Of Suitable Insertion Pipes Of Adequate Diameter Upto Required Depth Along With Suitable Airline Pipes , birbhum-West Bengal

tender for Surging and development of Big dia tubewells (14 Nos.) by Carrying out surging and back blowing of existing tube well including installation of suitable insertion pipes of adequate diameter upto required depth along with suitable airline pipes for injecting compressed air under pressure at the appropriates depth inside the tube well under Birbhum Division, PHE Dte. (Sl. No.8)Location of T.Ws: (Mohammad Bazar,Hatgacha,Puranagram,Raypur,Maldanga & Baliharpur) PWSS. Sl. No. Item Description 1 Carrying out surging and back blowing of existing tube well including installation of suitable education pipes of adequate diameter up to required depth along with suitable airline pipes for injecting compressed air under pressure at the appropriates depth inside the tube well. The work includes the cost of required manpower for installation of the necessary education and airline pipes, operation of compressure of 200-250 cfm capacity including consumables hire and maintenance charges hire charges of equipment including tools and special top fitting and valve for pressureising the aquifer-all inclusive.Hire charges of air compressure The hire charges of plant machinery on per day basis are for single shift of eight working.hours.per day 12 hrs.x10 days=120 hr Total as shift= 120hr/8=15 daysBASIC RATES: 0.1 HIRE CHARGES OF PLANTS & MACHINERY Code no 0040 of DSR 2021 page-4 2 1.2 Surging Mechanic Basic rateRs.853.00 add @ 5% over head charges + 10% contractor profit Rs. 985.00, 1 nos mechanic per day, single shift of eight working hours. per day 12 hrs. x 10days=120 hr Total as shift=120 hr/8=15 daysBASIC RATES: 0.2 LABOUR code no 0160 as Technician of DSR-2021 page-8 3 1.1 Rig crew and Helper (Technician)Basic rate Rs. 645.00 add @ 5% over head charges + 10% contractor profit Rs. 745.00 4 nos rig crew helper per day, single shift of eight working hours per day 12 hrs.x 10 days=120 hr Total as shift=120hr/8=15 days x 4 nos=60 daysBASIC RATES: 0.2 LABOUR code no 0161 As helper technician of DSR-2021 page-8 4 Mobilization of equipment and manpower at TW sites including hire charges of trucks breakdown van/crane, tractor as required, loading and unloading of all equipment and shifting of unit to next TW site including all labour charges.Loading unloading charges by local workers on truck by tripod chain pulley etc. 2 x 5 Mazdoor maleBasic rate Rs. 465 as per latest order no. 1090 F- (P2) dt 01.03.24 add @5% Overhead charge, add @10% contractor profit=Rs.537.005 nos of labour per day, 5 nosx2 days=10 days 5 Hire and running charges of crane 20 tonne capacity for towing from muddy work site (non approachable by truck) Hire and running charges of crane 20 tonne capacity BASIC RATES: 0.1 HIRE CHARGES OF PLANTS & MACHINERY code no-0028 of DSR-2021 page-4 The hire charges of plant machinery on per day basis are for single shift of eight working hours. 6 Truck hire charges to carry the air compressor one site to other 9 tonneBASIC RATES: 0.1 HIRE CHARGES OF PLANTS & MACHINERY Code no 0084 of DSR2021 page-6 7 Chemical treatment of the tube wellHexa Metaphosphate 8 HCL 9 Bleaching powder BASIC RATES: 0.3 MATERIALS code no-1301 of DSR-2021 page-20 10 Cement sealing by Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement. If any, in ground floor as per relevant IS codes. 11 Add GST @18% on sum of Item No. 1 to 10 12 Add Cess @1% on sum of Item No. 1 to 11

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