Construction of Water Supply Scheme Kumardungi Block Campus under D.W.and S. Division Chaibasa year 2026-27

HYDT : Cost of drilling 200mmX165mmX125 Mtr deep bore well in all kinds of soil and rock in rural area for installation of pump bore set with Hydraulic DTH Rig machine, all complete including supplying all materials, tools, drilling rig, Air Compressor and equipments, as well as fuel, lubricants and cost of transportation of Rig machine and other vehicles up to the site.

(a) 0.00m Up to 50.00m depth below G.L. In Rural Areas (DWSD 119)

(b) Above 50.00 m depth. In Rural Areas

Supplying all tools, tackles & lowering of 200 mm dia MS ERW casing pipe of 6mm wall thickness including welding charges, cost of pipe etc. all complete job. (DWSD Item 120)

Supplying all materials, labour, tools & equipments for fitting & fixing 200mm dia MS cap over casing pipe complete job. (DWSD Item 120 B)

Supplying materials and labours for constructing bore well chamber of 75B designation brick masonry chamber 600mmx450mm and 750mm deep internal dimension having 250mm thickness in cement mortar 1:6 including 12mm cement plaster 1:6 with 600mmx475mm RCC cover with earth work in excavation and 75mm thick PCC(1:3:6) in foundation and refilling all complete as per specification and direction of E/I (Annexure I Attached) (As per Old Model Estimate)

Designing (aesthetically) and constructing RCC elevated service reservoirs of following capacity with RCC staging consisting of columns, internal and external bracings spaced veritcally not more than 4.5 metres centre to centre for ESR having capacity 500 Cum & not more than 6m c/c for ESR having capacity above 500 cum, including excavation in all types of strata, foundation concrete, cement plaster with water proofing compound to the inside face of the container including refilling disposing of the surplus stuff within a lead of 50 metres, all labour and material charges including lowering, laying, erecting, hoisting and jointing of pipe assembly & valve of inlet, outlet, washout, overflow and bypass arrangements as per design, providing and fixing accessories such as M.S. ladder, C.I. manhole frame and covers indicators, lightening conductor, G.I. water level pipe railing around walk way and top slab providing spiral stair case from ground level to roof level,MS grill gate of 2 M. valves ventilating shafts, providing and with locking arrangement.Ht applying three coats of cement paint to the structure including roof slab and giving satisfactory water tightness test as per I.S. code. The job to include painting the name of the scheme and other details on the reservoir as per the directions of Engineer-in-Charge.

1. The design of the structure be in accordance with relevant I.S. 3370 -1965 or revised

2. The design shall satisfy the stipulations as per I.S. 1893 - 1984 and I.S. 13920/1993 for seismic force and I.S. 11682/1985 for RCC staging of overhead tanks and for seismic zone 3.

3. For design having more than 6 columns, provision of internal bracing is obligatory.