Guhra OHSR 1st

Amount

Construction of 1 No. New RCC OHSR of capacity 25 CUM, Staging Height = 18 M and F.S.L. = 19.70 M), Complete with external R.C.C. stair case with landing slabs, R.C.C. roof, ventilator, automatic water level indicator, single manhole cover, lightening conductor, water proofing/ water tightness of storage container etc. complete as described, duly tested and handed over in proper working order to the DWSS. The lump-sum rate quoted for this component shall include the cost for providing and installing inlet, outlet, scour and over flow, double flanged DI pipes as per (IS 8329-2000 with latest amendments), including cost of CI/Ductile Iron (DI) D/ F Expansion joint, Bell mouth D/F puddle collars as per DWSS standards, Ductile Iron Duck foot bends conforming to IS-9523 with latest amendments andC.I./Ductile Iron D./ F sluice valves duly ISI marked (IS-14846-2000 or latest) one each with inlet, out let and scour pipes, and painting of all components shall be included in cost complete in all respects to the entire satisfaction of the Engineer in Charge.The lump sum price of the OHSR shall also include the cost for jointing material including cost of nuts and bolts (ISI marked) rubber sheet, MS clamp made out of 50mm x 6mm flat in two halves, each set fixed with at least 5 Nos. Nuts and Bolts with each pipe complete as per Drawing including any material required.

It should be noted: a) The construction of OHSRs shall be as per standard drawings/design of DWSS. However, if (i) the height of Sill Level(s) and FSL(s) of OHSR(s) to be constructed is more than the standard drawings/design or/ and (ii) the bearing capacity at site after allotment comes out to be less than 8.75 t/sq.m., then the contractor shall submit revised design from reputed Engineering Institute to fulfill the requirements of additional height or less Bearing Capacity at site. However, key parameters of OHSR(s) like container portion (diameter) and center to center distance of columns etc. shall be kept as per drawing attached. The revised structural design shall NOT be downward revised in any case. The responsibility for structural safety of OHSR(s) shall be of the contractor. However, in case of variation due to upward revision in the design due to less bearing capacity encountered at site than 8.75 t/sqm or on account of increase in height, then the additional quantities for items of work which that could have to be executed on account of less Bearing Capacity than 8.75 t/sqm or on account of increase in height shall be paid at CSR plus ceiling premium applicable at the time of tendering.

b) That the Bidder shall review the designs and drawings provided with the Bid documents and point out deficiencies if any and that the Bidder shall be responsible for the structural stability and water tightness of the OHSR.

c) Before commencement of the work the Bidder should take the SBC of foundation soils and satisfy that the design furnished by DWSS conforms with SBC taken by DWSS.

Murari Parshad Govt. Contractor

M/S MEWA LAL THEKEDAR