Chennai Metropolitan Water Supply And Sewerage Board Tender

at 1.0m deep

at 1.5m deep

at 2.0m deep

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.

238/200mm OD/ID DWC PE orPP Pipe

at 2.5m deep

at 3.0m deep

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

Construction of Precast circular RCC maintanence holes 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 maintanence hole 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 maintanence holes at the required position as directed by the engineer at site including testing the maintanence hole with water for 48 hours to check water tightness and rectifying the defects if any for the following sizes and depths.

1200mm dia Circular maintanence hole for Sewers (upto 450mm dia)

at 1.0m deep

at 1.5m deep

Construction of Precast circular RCC maintanence holes 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 maintanence hole 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 maintanence holes at the required position as directed by the engineer at site including testing the maintanence hole with water for 48 hours to check water tightness and rectifying the defects if any for the following sizes and depths.

1200mm dia Circular maintanence hole for Sewers (upto 450mm dia)

at 2.0m deep

at 2.5m deep

Construction of RCC maintanence holes 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 maintanence hole cover and frame, providing CI steps, ,benching and channelling including refilling the trenches with excavated earth and disposal of earth etc. Including testing the maintanence hole with water for 48hours to check water tightness and rectifying the defects if any complete for the following size of maintanence holes.

1200mm dia Circular maintanence hole for Sewers (upto 450mm dia)

at 3.0m deep

Supplying and fixing 150mm dia MS Ventilating columns 6.0m length with CI Base for Ventilating column, Wire Cowl, Supplying, Laying, Jointing and Testing of 150mm dia stoneware pipe to a length of 6m for each column with 100mm SW stopper including cost of joining materials such as cement, sand and spun yarn with necessary civil works for construction of Masonry Pillars, earthwork excavation, refilling etc., complete.

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

Road Cutting

Cutting Asphaltic Road

Non Bus route

Cutting DWC PE Pipes

238/ 200mm OD/ID DWC PE or PP Pipe

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

110mm dia upto a depth of 1.0m

160mm dia upto a depth of 1.5m

Inspection Chamber : Construction of inspection chambers of following sizes with earth work excavation for foundation, 23cm thick concrete bed using 40mm brick jelly concrete in C.M. 1:4:10 for foundation, brick work in C.M. 1:6 for chamber, plastering with C.M. 1:3,12mm thick, benching, channelling, supplying and fixing 45x45cm medium weight L.S. cover and frame, etc., complete for

IC for HH premises

60 x 60 x 105m

60 x 60 x 150cm

Providing and constructing vertical drop arrangement of 0.6 m and more height as required including providing and jointing special such as double T. Bend required stoneware pipe fixed in m-100 C. C. at required level as type design cutting, jointing and filleting as per specification etc. complete. 238/200mm OD/ID DWC PE or PP Pipe

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

Refilling with excavated soils (other than sand) complying with standard specifications for filling in foundations and basement.(for DWC PE or PP pipe length)

Disposal of surplus earth (for DWC PE or PP pipe length)

Excavation in hard stiff clay, stiff black cotton, hard red earth, shales, muram, gravel stoney earth and earth mixed with small size boulders as per SS 20B with initial lead of 10m and lift of 2.0m for bedding

Providing and fixing dummies in sewers using driver with helmet with all safety measures including insurance cover for the driver and labours

Sewer size upto 200mm dia & upto 2.0m depth

Dismantling and removing dummies in sewers using driver with helmet with all safety measures including insurance cover for the driver and labours

Sewer size upto 200mm dia & upto 2.0m depth

Provision for pumping out sewage for uninterrupted service of the existing collection system

Provision for Dewatering charges for pumping out sub soil water

2.5m

3.0m

Provding Anchor block for DWC pipes.