construction of 20KL OHSR at Sc colony of Eturnagaram

Construction of RCC OHSR of Capacity with 12 metre staging with raft foundation using M 30 grade of concrete and Fe 500 grade steel as per approved designs and drawings.Side walls of OHSR shall be plastered with CM(1:1.5) prop. 9mm thick and shall be painted with epoxy paint in three coats including roof.Out side of the structure shall be painted with snowcem paint two coats of approved quality paint over primary coat. The rate including cost, conveyance of cement conforming to IS 269 1976 and steel confirming to IS 1786-1979 to site and fabrication charges of steel etc,fixing of following items.NOTE: -1) For intermediate ranges proportional rates may be adopted. All VRCC shall be in M30 grade design mix.2) Rate inclusive of three coates of food grade epoxy paint to inner surface of the reservoir including roof dome.3) The above rates be adopted for estimate purposes for construction of ELSR for a finished work including 2 coats of wheather proof emulsion painting for external surfaces, lettering, all required fixtures, pipes, bends, valves etc., for pipe connections but excluding cost of pipes,bends and valves as per departmental designs and drawings.4) Fixtures include :a) RCC or Aluminium ladder inside 0.60 m wide.b) spiral staircase on the outside shall be provided upto 200KL ELSR. Above 200KL ELSR Capacity dog legged staircase shall be provided with staircase flight width of 1.0mts and landing width of 1.20mts with S.S railing upto 1.0 height.c) Lightening arrestor, including conductor and earthing etc with relevant IS codes.d) RCC ventilators with copper or stainless steel fly proof mesh.e) D.I Manholes frame and cover 0.60x0.60 m as per IS specifications (light duty) - 2 Nos.f) Water level indicator of good quality with ebonite/ copper float approved pattern - 1 No.g) The ladder shall be with Aluminium and Verticals with HDPE of 10kg/Sqcm shall be provided for single column OHSRs only. h) Minimum staging for all ELSR/OHSR shall be 12.0mts.i) The increase in staging shall be at 1.0mt interval.j) The railing provided to the gallery and staircase shall be with stainless steel of grade 304 for a height of 1mtsk)The railing provided to the gallery and stair case shall be with stainless steel of grade 304 for a height of 1.20mts.l)The dog legged staircase shall be enclosed with brick/CRS wall on three sides and front side with PVC door of standard maker up to 1st brace level from ground level to prevent unauthorized entry.m) D.I swan neck ventilators shall be provided in top dome and slab.n) The above rates are exclusive of all inlet, outlet connection and valves. All valves near inlet, out let and for scour of ELSRs shall be D.I valves.

G.I pipe nominal bore medium grade class B - 80 mm

G.I pipe nominal bore medium grade class B - 100 mm

G.I pipe nominal bore medium grade class B - 80 mm

G.I pipe nominal bore medium grade class B - 80 mm

Sluice Valves for inlet 80 mm dia

Sluice Valves for outlet 100 mm dia

Sluice Valves for scour 80 mm dia

Supply and Delivery of 75mm dia 6kgf/cm2 PVC Pipes including all taxes and transportation to site etc., complete.

Supply and Deleviery of HDPE Pipe line as per IS:4985/1988,with its amendments and revisons thereon including supplying of pipes, specials as per equirements Excluding all Taxes.

E/w excavation in loamy, clayey soils like B.C soils red earth and ordinary gravels for pipe line trenches of size (0.70x1) and depositing on banks with an initial lead of 10m and lift of 2m including lowering,laying,jointing of pvc pipes into the readymade trenches and true to the alignment and gradient,refilling thetrenches with excavated earth etc., complete.

E/w excavation in loamy, clayey soils like B.C soils red earth and ordinary gravels for pipe line trenches of size (0.70x1) and depositing on banks with an initial lead of 10m and lift of 2m including lowering,laying,jointing of pvc pipes into the readymade trenches and true to the alignment and gradient,refilling thetrenches with excavated earth etc., complete.

Supply and delivery of 15mm dia House service connection as per standard specification including the cost of the materials like Clamp Saddle/ Electro fusion Saddle confirming to prEN 12201-3, Manufactured from virgin resin of PE-SO/PE-100 with FLOW CONTROL VALVE (5 LPM @5m head), Compression Elbows, MDPE PESO Blue Pipe & Supplying and and including cost of 15mm dia meter brass body CP finish bib tap of BIS standard etc including GI verticals complete for finished item of work

Fixing of Saddles, FCV's, GI Pipe, Bib Taps and MDPE including lowering, laying and jointing including earth work excavation and refilling the pipe line trench after laying the pipe line