Breaking of Saftey Ring in bottom depth of Borewell for increasing the qty. of Lowering Pipe and Development of Borewell at various Installation of Borewells in Sec 3 Panchkula.

33.9.1:- Supplying, assembling, lowering and fixing in vertical position in bore well Unplasticised PVC medium well screen (RMS) pipes with ribs, conforming to IS: 12818, including hire and labour charges, fittings and accessories etc. all complete, for all depths, as per direction of Engineer-in-charge. 1. 100 mm nominal size dia [Through Rate]

33.10.2:- Supplying, assembling, lowering and fixing in vertical position in bore well, ERW (Electric Resistance Welded) FE 410 mild steel screwed and socketed/plain ended casing pipes of required dia, conforming to IS: 4270, of reputed and approved make, including painted with outside surface with two coats of anticorrosive paint of approved brand and manufacture, including required hire and labour charges, fittings and accessories, all complete, for all depths, as per direction of Engineer-in-charge. 2. 150 mm nominal size dia having minimum wall thickness 5.00 mm [Through Rate]

33.15:- Gravel packing in tube well construction in accordance with IS: 4097, including providing gravel fine/ medium/ coarse, in required grading and sizes as per actual requirement, all complete as per direction of Engineer-in- charge. [Through Rate]

20.95:- Development of tube well with pump of suitable rating to that full satisfaction and as directed by the Engineer-in-charge [Through Rate]

20.103.3:- Development of tube well according to clause 9.3 of IS: 2800-1991 (Part-I) as amended up to date and specifications attached and as directed by the Engineer-in- charge of the work including the cost of all consumable stores, fuel, oil, compressors, pumps and machinery etc. as required for the work. 3. Compressor 1100cfm x 350 psi[Through Rate]

App. Item:- Broken Saftey Ring, Increasing the depth including breaking saftey ring bottom at 12` x 8` reducer pipe and lowering of special tool with line shaft ^ TandP complete in all respect to the entire satisfaction of EIC.