Borewell & Tubewell Works Tenders

MS or Iron in Plain work in heavy size such as chokhat Trusses, Built up Gates, Door Frame, Grill including drilling holes, riveting, binding for proper shape and including supply of steel & its wastage, bend, hooks, steel bolt, Nuts etc and their fixing and including supply of all material, labour, tools and plants etc required for proper completion of the work. S.I.No. 503

Drilling Borewells and Laying Pump Set and Pipeline at Ward No 23 Left Side of Madhuvanahalli Road In K R Nagar TMC Limit

Sinking of Tube-well with platform,Soak Pit and Silt chamber near the house of Ramkrishna Jana Land at Swarupnagar,Sansad-XIII under Swami Vivekananda G.P

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.) For tube well of size bigger than 100mm dia. with top enlargement to have yield of 6000 gallons per hour.

Carrying out the resistivity survey by VES method using Schlumberger configuration for locating the proper spot for drilling of tube well with in the selected habitation, including Photography, interpretation of resistivity data and submission of report in the desired format along with resistivity necessary graph, photographs and readings. 20.1/254

Drilling of 125mm (4 3/4”) nominal dia vertical borewells anywhere in Tamilnadu in all formations, suitable for down the hole hammer drilling such as medium hard rock to hard rock formation, consolidated formation etc and drilling over burden to a dia not less than 200mm including insertion of 165 mm PVC casing pipe, couplings caps and other relevant materials required upto the depth as directed by the Engineer or his representative including grouting of cement 25kg (minimum) up to the depth of over burden are including borewell development flushing of borewell at a pressure 7kg/cm2 (100 lb per square inch) including yield test, crew charges, cost of consumables, transportation charges of casing pipes and all other materials including assembling complete to the satisfaction of the Engineer and as stipulated in the technical specification. The entire works should be carried out as per IS 2800 Part I & II / 1979. Finished dia of borewells shall not be less than 145mm