Construction of diaphragm chamber and manhole arrangements at thamukkam convention centre in ward 31

Amount

Construction of manholes 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 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, manhole cover and frame, benching and channelling including refilling the trench with excavated earth and disposal of surplus earth etc. complete for the following sizes for each manhole (As per the type design drawing for manholes). - Depth 1.00m

Depth 1.50m

Depth 2.00m

Depth 2.50m

Cutting the existing BT Road surface the debris clearing away from the site etc.complete..,

Earth work excavation for foundation & depositing on bank with an initial lead of 10m & lift of 2 m for depths in soft disintegrated Rock when required, barricading with safety lamps etc all complete as per standard specification as directed by the Departmental Engineer.

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 applica-tion generally as per IS-16098 (Part-2) type B

Lowering PVC/ DWSC rigid pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste.

Refilling the trenches with suitable excavated earth available along the alignment after the pipes & specials are laid, jointed & tested in layers & watering, ramming & consolidation directed by the Engineer-in-Charge

Earth work excavation forfoundalion in Hard stiff clay, stifi black cotton, hard red earth, shales munam, gravel,stoney earth and earth mixed wilh small size boulders SS.20B and Sand, silt or olher loose soil, wet sand,or sill not under water, light black cotton soil, sandy loam ordinary soil and to full depth as may be directed except in hardrock requiring blasling inclusive of shoring shuttering and baling out water and cleaning and levelling the site etc.,complete Earthwork Excavation

Supplying and filling in foundation and basement with filling sand in layers of not more than 15cm thick well rammed watered and compacted - etc., complete complying with standard specification.

Plain Cement Concrete 1:4:8 (one cemenl four flne aggregates and eight coarse aggregates) using 40mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, Iaying and labour charges and all incidential charges such as water providing etc., complete as per standard specitication

Plain Cement concrete 1:11/2:3 (one cement, One and Half sand, Three Course aggregate) using 20mm gauge hand broken granite stone jelly for foundation including dewatering if found necessary and laid in layers of not more than 15cm thick and compacted, etc., complete complying with standard specfication.

Brick work in CM 1:5 (one cement & Five sand) using II class ground moulded bricks of size 9"X43/8"X 23/4" standard specification including finishing, curing, etc., complete complying with standard specification (Masonry projections wherever necessary for obtaining required elevation shall be done without extra cost)- Upto Basement

Supplying and erecting centering for sides and sotFits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to cenlre and supported by casurina props of 10cm to13 cm dia spaced at not more than 75 cm centre to centre etc. complete mmplying with the standard specificaiton. (Payment for centering shall be given after theconcrete is laid) - (Bottom Only)

Reinforced cement concrete 1:1 1/2 :3 (One cement One and half sand and three aggregate) using 20mm machine broken gauge bard granite jelly for RCC worksthe rate excluding the cost of reinforcement grills,centering and shuttering etc., complete in G.F

Suppling and fabricating and placing in position MS (or) R.T.S. bar for reinforcement to all RCC works as per the design given including cost of steel and bindinq wire also in all floors.

Plastering with cement mortar 1:5 (One cement and five sand) 12mm thick in all floors including cost and conveyance of all materials to site etc,complete as per standard specifications

Supply and delivery of following sizes of FRC Manhole Covers / Frames to stores as per IS 12592:2002 to its latest revision with reinforcement details for covers and frames (600mm dia FRC manhole cover to suit 600 mm clear opening manhole frame)

Add GST 18%

N S CHELLAPANDIAN (BID ID -1273832)