Chennai Metropolitan Water Supply And Sewerage Board Tender

Tracing and raising of man holes upto 90 cm height using Stock brick work in C.M. 1:3(SRC) (Crushed stone sand(M Sand )), for 23 cm thick, Outer Plastering in C.M. 1:3 (SRC) (Crushed stone sand(M Sand ))for 12 mm thick, Inner Plastering in C.M. 1:3 (SRC) (Crushed stone sand(M Sand ))for 20 mm thick, Cement concrete 1:3:6 using 12 to 20 mm guage hard broken stone jelly, including Suppling and fixing of 60cm dia FRC new heavy duty frames and doors as per type HD- 20, IS 12592, Part 1 & 2, cutting Asphalt concrete road using power drill / Air compressor, with necessary barrication work around the trench with casurine post @ 1.52m c/c (8 to 10 cm dia & 1.52 m ht) vertical, painting the vertical posts in different colour tieing with coir rope, fixing danger flags, danger light reflectors including watching during night etc., complete as per data enclosed.

Cleaning and flushing the already laid existing 250 mm & 300 mm dia SWP sewer main along both the sides of OMR including hire charges for 4 nos. of diesel pumpset 7.5 HP for dewatering with fuel including transportation and crew charges and using CMWSSB jet rodding machine for flushing the pipeline (The hire charges for using the Board jet rodding machine and cost of water has to be paid to CMWSSB by the contractor )

Hire charges for 4 nos. of diesel pumpset 7.5 HP for dewatering with fuel including transportation and crew charges and hire charges for helmet sinking equipments including labour for helmet sinker and fixing and removal of dummy etc complete.

The hire charges for using the Board jet rodding and desilting machine and cost of water has to be paid to CMWSSB by the contractor

Rehabilitation of the existing sewer mains along both the sides of IT corridor (OMR) - Sholinganallur and Karapakkam in Depot 197 & 198 in Area XV

Cutting Asphaltic concrete road in bus route

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

Supply & Laying 250mm ID 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, refilling the trenches with excavated soil, watering and ramming to consolidation, etc., complete for the pipes

1.0 m depth

1.5 m depth

2.0 m depth

2.5 m depth

3.0 m depth

Supply & Laying 300mm ID 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, refilling the trenches with excavated soil, watering and ramming to consolidation, etc., complete for the pipes

1.0 m depth

1.5 m depth

2.0 m depth

2.5 m depth

3.0 m depth

End concrete PCC 1:3:6 using 40 mm gauge hard broken jelly

Construction of 1,20 m dia Precast circular RCC manholes 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 manhole 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 manholes at the required position as directed by the engineer at site including testing the manhole with water for 48 hours to check water tightness and rectifying the defects if any

at 2.00 depth

at 2.50 depth

Construction of 1.2 m dia RCC manholes 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 manhole cover and frame, providing CI steps, ,benching and channelling including refilling the trenches with excavated earth and disposal of earth etc. Including testing the manhole with water for 48hours to check water tightness and rectifying the defects if any complete at 3 m depth

Dismantling of damaged MHs