Construction of Permanent Flood Protection wall in Right arm from LS 235 m to 490 m and in Left arm from LS 0m to 350 m of the Uthankudi tank surplus course at Uthangudi village of Madurai East Taluk in Madurai District

Dismantling, clearing away and carefully stacking material and without disturbing nearby structure useful for reuse for any thickness of Plain Cement Concrete etc., complete complying with standard specifications and as directed by the Engineer incharge of work.

Earthwork excavating and depositing on bank with initial lead of 10m and initial lift of 2 m in hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc., complete complying with standard specification as directed by the departmental officers. (Open Excavation).

Earth work excavation for desilting the existing rivers / canals / channels/odai/ nullas / drains/flood bowls/tanks/ reservoirs etc., consisting of very loose soil, silt, oily silt, slushy, marshy, loany, organic soil, sea shell and flat mica particles with zero present air void in unhygienic & insanitary conditions in under water and not under water deploying earth moving machinery with suitable floats buoys barge/ hydraulic excavator & other mechanical devices including the cost of hire charges for machinery, with cost of skilled operators with helper & cleaners for the entire operations to reach the banks in which the removed silt & sludge has to be dumped over either one of the rivers / canals / channels/odai/ nullas / drains/floods bowls / tanks / reservoirs etc, bank whichever is convenient as per the prevailing site conditions for easy conveyance and including jungle clearance etc.. complete (Rate excluding conveyance to dumping yard or low lying area) complying with standard specification as directed by the departmental officers.

Earthwork excavating and depositing on bank with initial lead of 10m and initial lift of 2 m in hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc., and refilling the sides of foundation with excavated earth in layers of 15cm thick well rammed and consolidated etc. complete complying with standard specification as directed by the departmental officers. (For Foundation)

Supplying and filling with M-sand of each layer not more than 30 cm thick including consolidation etc complete and as per the technical specifications directed by the Engineer in charge of the works For sluices, weirs sand retainig wall etc., complete complying with standard specification and as directed by the Departmental Officers.

Supplying and filling in foundation, base of the lining, basement, etc with filling Gravel in 10 cm thick well watered, rammed and consolidated using hand roller etc. complete complying with standard specification and as directed by the departmental officers.

Preparation of Sub grade (as per technical specification) duly moistured and duely removing the surface irregularities including dewatering and laying plain cement concrete lining 75mm thick of M15 design mix concrete on canal bed/haunches/ berms using hard coarse aggregate with nominal maximum size of 20mm IS specificed grading to have well graded aggregates weigh batching the ingredients along with air entraining agents (200ml per bag of cement) and mixing these in mixer machine (concrete mix to yield 28 days) placement of concrete over the sub grade on canal bed/haunches/berms manually including consolidation of concrete, providing tranverse contraction joint grooves as per technical specification (2.70m spacing) and water curing of the lining. The sub grade shall be well prepared dressed and rolled to true level and specified section to form a firm compacted base for the lining as directed by the Engineer in charge of the Work.

Providing and placing in position of plain Cement concrete of grade M10 using hard well graded aggregates with the nominal maximum size of coarse aggregate of 40mm weigh batching the ingredients and mixing in approved mixers/batching plant (to produce concrete of the specified characteristic strength of 10 N/mm2 at 28days) including dewatering the placement site by bailing/pumping and by diverting wherever necessary; laying the concrete in layers of various thickness and in bays; compacting and finishing the surface with all leads and lifts; watering curing so as to attain the profile and strength specified in the approved drawing & specifications etc., complete as directed by the Engineer in charge of works and as per the technical specifications

Providing and placing in position of plain Cement concrete of grade M15 using hard well graded aggregates with the nominal maximum size of coarse aggregate of 40mm (60%) and 20mm (40%); weigh batching the ingredients and mixing in approved mixers/batching plant (to produce concrete of the specified characteristic strength of 15 N/mm2 at 28days) including dewatering the placement site by bailing/pumping and by diverting wherever necessary; laying the concrete in layers of various thickness and in bays; vibrating, compacting and finishing the surface with all leads and lifts; watering curing etc., complete so as to attain the profile and strength as directed by the Engineer in charge of works and as per the technical specifications.

Below Ground Level 1.50 m to 1.00 m Above Ground Level

Above Ground Level 1.00 m to 4.50 m Above Ground Level

Supplying and Erecting water tight steel centering for sides and soffits including necessary supports and strutting for all works etc up to 3.29 m height with all cross bracings using mild steel BG 10 sheets of size 90cm x 60cm x 10 mm gauge stiffened with welded mild steel angles of size 25x25x3mm for boarding laid over silver oak (country wood) joist of size 10cm x 6.5cm spaced at about 90cm centre to centre and suitably supported by casuarina props of 10cm to 13cm dia spaced at 75cm centre to centre, including cost of materials etc., complete complying with standard specification and as directed by the Departmental officers. The payment for centering shall be given after the concrete is laid and the retrieved materials should be taken back by the contractor.

Without Strutting

With Strutting

Providing construction contraction and lift joints in masonry concrete including curring, jointing and placing mastic pad of 20mm thick with mastic filling as specified in the drawings directed by the engineer complying with standard specification as directed by the departmental officers (1.04kg of Asphalt and 1.00m2 mastic pad required for 1m2)

Providing & fixing pre-cast cylindrical porous plug of 75 mm Dia and 250 mm in length in porous concrete CC 1:0:4, one in alternative panel in the bed @ 2.10m c/c, in filter having size 45 x 45 x 45 cm sand and 30x30x30 cm filled with 12mm to 40mm course aggregate mixed with 1/3 sand on the inner including excavation,complying with technical speciification and as directed by the Engineer incharge of the work.

Supplying, fabricating and placing in position of RTS or MS reinforcement for all reinforced cement concrete works including cost of steel rods of all sizes including binding wires and labour charges for decoiling, cutting, bending and tying the grills in position etc., complete complying with standard specification and as directed by the departmental officers.

Providing and fixing weep holes of 110mm dia PVC pipe to a required length for protection wall Abutment & wing wall including cost of all materials to work site including labour charges for fixing of 90cm spherical backfill arrangements with 10 to 80mm dia size broken granite stone etc,complete to drain the backfill (4kg/cm2 of working pressure) complying with standard specification as directed by the departmental officers.

Providing filter media behind the abutments and wings with clean III graded material 53mm to 5.6mm to 600mm thick and well compacted in layers with smaller sized towards the soild and bigger size towards the wall including cost and conveyance to work site inlcuding all labours and other incidental charges including hire charges for tools and plants employed etc., for filter media s per MOST's (Roads Wing) specifictions for Roads and Bridges "Fourth Revision Cl.309-3-13 and 305-4-4 etc., complete complying with standard specification as directed by the departmental officers.

Providing and filling with sealant material in Transverse contraction joint after thoroughly cleaning all the joints @ 2.70m c/c and finishing the surface to match with lining face with contractors own material as per technical specifications as directed by the Engineer incharge of the work. (as per drawing of the transverse contraction joint enclosed)

Supplying providing and fixing chain link fencing 2" x 2" using 10 gauge galvanised iron wire mesh of size 2.0 x 1.50m over PCC wall which is stiffened by horizontal MS flat (double flats) of size 30mm width x 6mm and fixed to MS ISA 75x75x8 mm of height 2.00m c/c and fixed on the concrete wall and welded to angles at site as directed by the departmental officer. the rate including welding, fixing, painting etc complete complying with standard specification and as directed by the departmental officers.

Conveying the excavated silt in unhygienic & insanitary conditions to the dunmping yard or low lying areas as directed by the field Engineer’s by deploying the earth moving machinery, hydraulic excavator, tippers & other mechanical devices including the cost of hire charges for machinery, with cost of skilled operators with helper & cleaners, including leveling etc.. Conveyance by roads in plains o to 10 km including Loading Unloading and transportation charges.

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