construction of 90KLOHSR at NTR colony

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.

D/F pipes - 2.00m. Long 100mm dia

D/F pipes - 1.00m. Long 100mm dia

Bell mouths 100mm dia

Duck foot bends 100 dia

D/F pipes - 2.00m. Long 150mm dia

D/F pipes - 1.00m. Long 150mm dia

Duck foot bends 150 dia

D/F pipes - 2.00m. Long 100mm dia

D/F pipes - 1.00m. Long 100mm dia

Duck foot bends 100 dia

Semicircular bend

D/F pipes - 2.00m. Long 100mm dia

D/F pipes - 1.00m. Long 100mm dia

Bell mouths - 100mm dia

Duck foot bends

Semicircular bend

Sluice Valves for inlet 80mm dia

Sluice Valves for outlet 100mm dia

Sluice Valves for scour 80mm dia