CNT/SEW/NCB/CRRT/098/2022-23

Amount

Bill No:1 Enlargement of existing gravity sewer mains and Reconstruction of Machine holes

Cutting Asphaltic road in Non-bus route road by using power breaker

Construction of Machine holes using sulphate resistant cement at various depths to invert including earthwork excavation as per SS 20B, laying cement concrete in C.M. 1:3:6 using Crushed stone sand (M sand) and 40mm B.G.jelly for foundation, sinking well kerb below G.L. for 4.5m depth and above, pumping, timbering charges for 2.5m depth and above, stock brick work in C.M. 1:3, for 23cm thick wall and over 23cm thick wall, plastering interior with C.M. 1:3, 20mm thick and exterior with C.M. 1:3,12mm thick, laying plain cement concrete 1:3:6 using 12.0mm to 20mm B.G.jelly fixing the frame, providing C.I. steps, machinehole cover and frame, benching and channelling including refilling the trench with excavated earth and disposal of surplus earth etc.(Including backfilling of trenches and disposal of surplus earth )

at a depth 2.0m

at a depth 2.5m

at a depth 3.0m

Reconstruction of Collapsed Machine hole

at a depth 2.0m

at a depth 2.5m

at a depth 3.0m

Cost of timbering for the use of construction of machine holes

at a depth 2.5m

at a depth 3.0m

Supply and Delivery of DWC Structured Wall Polyethylene Piping Systems (Pipe with online/offline coupler and elastomeric sealing ring) with required specials non-smooth external annular corrugated and smooth internal surface (Double wall) (SN 8 Class) for non-pressure underground sewerage, drainage application generally as per IS-16098 (Part-2) type B.

250mm dia DWC Pipe

at a depth 2.0m

at a depth 2.5m

at a depth 3.0m

Laying DWC pipes including earthwork excavation for trenches in hard stiff clay, blackcotton, hard red earth, shales, murams, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil depositing the earth on banks with initial lead of 10 m and initial lift of 2m carting the pipes from any of the Board’s Stores to the site of work lowering into the trenches, aligning, watering and ramming to consolidation, etc., complete for the pipes of following diametres. (Timbering included for Depths 2.50m,3.0m) - Excluding backfilling of trenches and disposal of surplus earth

250mm dia DWC Pipe

at a depth 2.0m

at a depth 2.5m

at a depth 3.0m

Engaging labour to remove the old pipes from the trench and disposal including transportation charges per stretch

Providing House service connection: Supplying, laying jointing and testing UPVC pipe including earthwork excavation for trenches in hard stiff clay, stiff black cotton, hard red earth, shales, murams, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m. lowering the pipes into the trenches, aligning, refilling the trenches with excavated earth in layers of not more than 23cm thick watering, ramming to consolidation and disposal of surplus earth etc., complete

100mm dia

150mm dia

Cement concrete 1:2:4 using Crushed stone sand (Msand) and 20mm gauge hard broken stone jelly for plain concrete works including laying ramming curing, etc., complete. (End Concrete for pipes at two ends of Machine Hole)

Making holes in the existing Machine Holes (Includes Labour charges for Mazdoor and breaker charges)

Providing iron barricading of size 2.50m width and 1.75m height using 40x40x4mm angle for outer frame supports, 25x25x3mm angle for inner frame supports and 20 gauge thickness MS Sheet for name board (as per drawing) including cutting, welding, fabrication charges and 1 coat of primer and 2 coats of enamel paint of approved quality, writing "METRO WATER" & work detail-Caution Sign, providing necessary interlocking arrangements with adjoining units, fixing danger flags, danger lights, reflectors, fixing stickers etc., including watching during night and placing the barricading units as directed at the sites.

Providing, and fixing dummy at upstream side downstream of the manhole with safety gadgets

Shallow depth upto 2.5m

deep from 2.5m to 3.5m

Removing dummy at upstream and downstream of the manhole with safety gadgets

Shallow depth upto 2.5m

deep from 2.5m to 3.5m

Dewatering using 10HP diesel engine pumpset including Hire charges, cost of Diesel, Engine oil, pump operator, labour charges, conveyance of pumpset and fuel to site and back, loading, unloading and any other incidental charges etc., complete. (Dewatering sewage from U/s to D/s from Machine holes)

Provision for erection of borewells of size 6" to 8" dia in Sedimentary formation using hand boresets including insertion of casing pipes supplying and packing of pebbles and conveyance of hand Boreset including loading and unloading

Labour Charges for inserting 150mm dia (M.S.Casing pipes assembly with slots or with out slots) in the drilled hole including welding the joints etc., complete and supplying and packing the annular space with pebbles of size and quality as approved by the Executive Engineer CMWSS Board

150mm dia Casing pipes assembly

Hire charges for diesel pumpset with fuel and crew charges including transportation

For 3HP

For 7.5HP

Refilling with excavated earth (other than sand)

Disposal of surplus earth.

Supplying and Filling Quary rubbish

Providing and fixing FRC cover and frame of size 60 x 60cm including necessary masonry work and plastering, etc., complete

SRI AMBAL ENTERPRISES

Capital Development and Service