Enlargement of Gravity sewer main at Various Streets in Depot-62 and 63, Chepauk Constituency in Area V

Amount

Bill NO 1. Enlargement of gravity sewer main at Various street in Depot-62, Chepauk Constituency in Area V

Hire charges for cutting Asphaltic concrete/ Cement Concrete road using Air compressor

Making trail pit

Supply, delivery, laying and jointing of Double wall corrugated / structured wall plastic polyethylene/ polypropylene pipes DWC PE or PP of class SN-8 with non-smooth external Annular Corrugated and Smooth Internal Surfaces in Standard lengths with online coupler and spigot type confirming to IS 16098 (Part-2) 2013 / EN: 13476-3 (latest revision) including elastomeric sealing ring gasket suitable for DWC PE or PP pipes conforming to IS: 5382 (latest revision), freight, insurance, loading into the truck and transporting to the stores / site.. etc including earth work excavation in hard stiff clay,stiff black cotton,hard red earth, shales, muram, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m and lowering into trenches, aligning and testing of DWC PE or PP pipes, watering and ramming to consolidation including timbering the trenches for depths 2.5m and above, pumping out subsoil water etc., complete.

250mm dia pipe

at1.50m depth

at1.50m depth (BRR- NIGHT WORK)

at 2.00m depth

at 2.50m depth

Supply, delivery, laying and jointing of Double wall corrugated / structured wall plastic polyethylene/ polypropylene pipes DWC PE or PP of class SN-8 with non-smooth external Annular Corrugated and Smooth Internal Surfaces in Standard lengths with online coupler and spigot type confirming to IS 16098 (Part-2) 2013 / EN: 13476-3 (latest revision) including elastomeric sealing ring gasket suitable for DWC PE or PP pipes conforming to IS: 5382 (latest revision), freight, insurance, loading into the truck and transporting to the stores / site.. etc including earth work excavation in hard stiff clay,stiff black cotton,hard red earth, shales, muram, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m and lowering into trenches, aligning and testing of DWC PE or PP pipes, watering and ramming to consolidation including timbering the trenches for depths 2.5m and above, pumping out subsoil water etc., complete.

300 mm dia DWC pipe @2.00m depth

400 mm dia DWC pipe @2.50 m depth

400 mm dia DWC pipe @3.00m depth

500 mm dia DWC pipe @3.50m depth

500 mm dia DWC pipe @3.50m depth (BRR-Night work)

Cement concrete 1:3:6 using Crushed stone sand (M-sand) and 40mm gauge hard broken stone jelly & SRC for plain cement concrete works including laying in layers of not more than 15cm thick including ramming curing,etc., complete

BRR Night work

Cutting of DWC pipe

250mm dia pipe

300mm dia pipe

400mm dia pipe

500mm dia pipe

500mm dia pipe (Night work)

Construction of Precast circular RCC machinehole using sulphate resistant cement with M30 design mix concrete using Crushed stone sand (M sand) including earthwork excavation as per SS20B including timbering and pumping charges(for 2.5m depth and above),Providing Plain Cement Concrete 1:1.5:3 using 20mm B.G. jelly for foundation,supplying and filling sand for bedding, Providing base units of 1m height(base slab and sidewall),riser unit (without corbel) of varying heights to suit the various depth requirements and roof slab including cost of steel reinforcement, cost of fabricating the steel mould using MS sheet and ISA angles including material and labour cost, Providing CI steps,fixing FRC machinehole frame and door,benching and channelling ,refilling with excavated earth and disposal of surplus earth, joining of precast units by grouting with CM1:1 and polyurethane based water proofing compound 1% (by weight of cement ) at shear key and protruded bars- grout holes locations,Cost of conveyance and erection charges of precast machinehole at the required position as directed by the engineer at site including testing the machinehole with water for 48 hours to check water tightness and rectifying the defects if anyfor the following sizes and depths. (1.20m dia depth)

at 1.50m depth

at 1.50m depth (BRR)

at 2.00m depth

at 2.50m depth

Construction of RCC machinehole using sulphate resistant cement with M30 design mix concrete using Crushed stone sand (M sand) including earthwork excavation as per SS20B , providing point edge to well kerb using ISA 150x75x10mm weighing at 16.9kg/m,sinking well kerb below 2m from G.L.or by open excavation for various depth as per site condition with M30 mix for side wall, raft and roof slab,including cost of steel reinforcement ,including bailing and pumping out water, formwork, plugging the bottom with PCC 1:3:6 using 40mm hard broken granite jelly, laying plain cement concrete 1:3:6 using 12mm to 20mm hard broken granite jelly for fixing frame, fixing FRC machinehole cover and frame, providing CI steps, ,benching and channelling including refilling the trenches with excavated earth and disposal of earth etc. Including testing the machinehole with water for 48hours to check water tightness and rectifying the defects if any complete for the following size of machineholes (1.2m dia)

at 3.00m depth

at 3.5 m depth

at 3.5 m depth (BRR)

Providing Iron Barricading of size 2.50 m width and 1.75 m height using 40x40x4 mm angle for outer frame supports, 25 x 25 x 3 mm angle for inner frame supports and 20 gauge thickness MS sheet for name board (as per drawing) including cutting, welding, fabrication charges and one 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

Dewatering using 10HP to 70HP 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. (10Hp)

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 110mm dia @ 1.0m depth

Supplying and laying of MDPE (PE80) Blue pipe (IS:4427) with necessary specials including earth work excavation laying jointing testing, refilling the trenches and disposal of surplus earth etc.complete. (20mm dia OD)

Hire charges for portable Genset 1.00 KVA with 2 Nos. of 150W flood light including all incidental charges, transportation, crew charges and fuel charges etc., complete.

SWD Crossing

Providing dummies in upstream & Down stream 2 Nos. Each manholes including labour and materials

Removing dummies in upstream & Down stream 2 Nos. Each manholes including labour and materials

Providing interconnection to the existing machine hole

Supplying and filling with stone dust for bedding for a thickness of 10cm and back fill envelope for a thickness of 150mm above the crown of the pipe for DWC PE pipes including ramming, consolidation etc., complete

Construction of precast anchor block for 500 mm dia DWC pipes

Providing and laying, spreading and compacting graded stone aggregrats to Wet mix macadam 250mm thick specification including pre mixing the materials with water at OMC in mechanical mix plant carriage of mixed material by tipper to site laying in uniform layers with pavers in Sub Base/Base corse on well prepared and compacting with vibratory roller to achive the desired density including cost of material, labour charges, rentals for machineary fuel and other incidential charges etc., complete as per clause of 406 of MORTH Rev 5 ( this rate is applicable only if work is done during night

Disposal of surplus earth

Refilling with excavated earth (other than sand)

The Contractor must obtain the existing Static GCP points from CMWSSB which should be considered as the control point with known coordinates X, Y and Z. Survey consultant to ensure the closing error is within permissible limits (SoI Standards)while transferring the levels from the existing Static GCP points and the same to be presented as a report. The same process shall be adopted for random verification of positional accuracy of points established using the PBMs as base. As built survey for every sewage and water pipeline and other assets must be done using DGPS based RTK method by transferring the coordinates from the nearest Static GCP of CMWSSB. Where there are signal interruptions for the RTK method, Total Station can be used. The coordinates from the static GCP shall be transferred to the Total Station by RTK method and the co- ordinates of the assets can then be captured by Total Station.

All the features, attributes of all the assets, utilities captured shall be Geo referenced as per standard Coordinate reference system (WGS 84 UTM Zone 44N). The final base map with assets and utilities shall be furnished in (.shp) format. The geo Referenced assets and utilities along with the attributes (as specified by the GIS Wing, CMWSSB) shall be converted into proper geo database (FGDB / PGDB) with the attributes.One set Hard and Soft Copy of all the CMWSSB assets and utility has to be prepared category wise network wise in A0 Print for verification in a print scale of 1:1000 in A0 plot,with standard legends in international and NUIS standards and should be legible and three sets of final Hard Copy in A0 print.

(b) For the Point Underground / Surface Assets along the roads

Bill No 2 : Enlargement of gravity sewer main at Various street in Depot-63, Chepauk Constituency in Area V

Hire charges for cutting Asphaltic concrete/ Cement Concrete road using Air compressor

Making trail pit

Supply,Laying, jointing SW pipes with cement joint, testing 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. and carting of pipes from any of the Board’s stores to the site of work, lowering into trenches and aligning, refilling the trenches with excavated soil, watering and ramming to consolidation,disposal of surplus earth etc., complete including the cost of cement and sand. (Timbering included for Depths 2.50m,3.0m,3.5m,..........upto 5.5m

250mm dia pipe

at1.50m depth

at 2.00m depth

Cement concrete 1:3:6 using Crushed stone sand (M-sand) and 40mm gauge hard broken stone jelly & SRC for plain cement concrete works including laying in layers of not more than 15cm thick including ramming curing,etc., complete

End concrete

For 250mm dia pipe

Construction of machinehole 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 for fixing the frame, providing C.I. steps, machinehole cover and frame, benching and channelling etc., complete for the following sizes for each machinehole (As per the type design drawing for machinehole).

at 1.50m depth

at 2.00m depth

Providing Iron Barricading of size 2.50 m width and 1.75 m height using 40x40x4 mm angle for outer frame supports, 25 x 25 x 3 mm angle for inner frame supports and 20 gauge thickness MS sheet for name board (as per drawing) including cutting, welding, fabrication charges and one 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

Dewatering using 10HP to 70HP 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.

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

Supplying and laying of MDPE (PE80) Blue pipe (IS:4427) with necessary specials including earth work excavation laying jointing testing, refilling the trenches and disposal of surplus earth etc.complete.

Hire charges for 2 nos. of Halogen fitting with allied fittings and accessories with electriation for monitoring with 12 hours per day for lighting purpose.

SWD Crossing

Providing dummies in upstream & Down stream 2 Nos. Each manholes including labour and materials

Removing dummies in upstream & Down stream 2 Nos. Each manholes including labour and materials

Providing interconnection to the existing machine hole

Providing and laying, spreading and compacting graded stone aggregrats to Wet mix M20 grade (100mm thick) specification including pre mixing the materials with water at OMC in mechanical mix plant carriage of mixed material by tipper to site laying in uniform layers with pavers in Sub Base/Base corse on well prepared and compacting with vibratory roller to achive the desired density including cost of material, labour charges, rentals for machineary fuel and other incidential charges etc., complete as per clause of 406 of MORTH Rev 5

Disposal of surplus earth

Sub Total (excluding GST)

Aero Construction Equipments