Description: Drilling and Development of 05 Nos DTWs with Contractors Direct Rotary drilling Rig and other machineries equipments including providing of ERW pipes Pea Gravels etc in West Tripura District under Rig Sub Div No I Badharghat as and when required Name of Work Water supply Scheme under JJM Deposit work other water supply scheme in Tripura Drilling Development of 05 five No s Tube Wells with Contractor s Direct Rotary Drilling rig and other machineries equipments including providing of ERW pipes Pea Gravels etc in different locations of West Tripura District under Rig Sub Division No I Badharghat as and when required
Details: Drilling and boring pilot hole in any soil strata by drilling rig, collection of soil samples of diffetent strata met with during drilling at verious suitable levels, preservation of samples in polythene bags/ sample boxes and disposal of excess soil or mud including the cost for bentonite water etc. as required to maintain the pilot hole properly as per specification (IS : 2800(part-I)) and direction of the Engineer-in-charge. A. With contractor's Rig 200 mm dia Reaming of pilot hole to an enlarged bore hole in any soil strata by drilling rig, disposal of excess soil or mud, including the cost for bentonite water etc. as required to maintain the bore hole properly as per specification (IS : 2800(part-I)) and direction of the Engineer-in-charge. A. With contractor's Rig From 200 mm dia pilot hole to 550 mm bore From 200 mm dia pilot hole to 460 mm bore Washing of enlarged bore hole of 460-550 mm dia in any soil strata
Sector: Water supply and Sewerage