Rehabilitation of Mavadikulam Tank Supply channel in Upstream and Downstream side of Airport Extension Area and Improvements to Kottapattu Tank supply channel in Kilakurichi village of Thiruverumbur Taluk and Kottapattu village of Tricy East Taluk in

Dismantling, clearing away and carefully stacking material and without disturbing nearby structure useful for reuse for any thickness of brick or stone masonry in Cement Mortar walls under 3 (Three) meters high etc, complete as directed by the Engineer in charge of works and as per the technical specifications

Dismantling, clearing away and carefully stacking material and without disturbing nearby structure useful for reuse for any thickness of PCC etc, complete as directed by the Engineer in charge of works and as per the technical specifications

Earthwork excavation for foundation depositing on bank with initial lead of 10m and initial lift of 2m Soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting may be directed inclusive of shoring strutting, bailing out water whenever necessary and refilling the sides of foundation with excavated earth as per standard specification and as directed by the Departmental Officers.

Supplying and filling with M- sand of each layer not more than 20 cm thick including consolidation etc.., complete complying with standard specification and as directed by the departmental officers.

Providing and placing Plain cement concrete in M-10 grade using crusher broken hard granite course aggregate (well graded) of nominal maximum size of 40mm to IS specified grading (To achieve the specified characteristic strength of 10N/mm2 in 28days) and mixing the ingredients in approved mixer placing in layers, water curing, finishing the surface with all leads and lifts etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and erection of steel centering for sides and soffits for plain surface with all cross bracings using Mild Steel sheets of size 90cm. X 60cm. thickness of and B.G.10 stiffened with welded Mild Steel angles of size 25 X 25 X 3mm for boarding, laid over country wood joists of size 10cmX 6.5cm spaced at 90cm. Centre to centre and supported by casuarina props of 10 to 13cm dia (spaced at 75cm) Centre to centre etc. complete complying with Standard Specifications and as directed by the Departmental Engineers.

Below Ground Level - Without Strutting

Above Ground Level - With Strutting

Supplying and fabrication and placing in position of Mild steel (MS) or Ribbed Tor Steel (RTS) of grills for all RCC works including cost of steel, binding wire and labour charges for decoiling cutting, bending and tying the grills etc.., complete complying with standard specification and as directed by the departmental officers.

Providing and placing Plain cement concrete in M-15 grade using crusher broken hard granite course aggregate (well graded) of nominal maximum size of 20mm and down graded to IS specified grading (To achieve the specified characteristic strength of 15N/mm2 in 28days) and mixing the ingredients in approved mixer placing in layers and vibrating, water curing, finishing the surface with all leads and lifts etc., complete in all respects so as to attain the profile strength specified in the approved drawing and specifications etc., complete complying with standard specification and as directed by the departmental officers.

Providing and laying in position, Standardised Concrete Mix M-25 Grade by insitu machine mix concrete adopting weighing batch method in accordance with IS:456- 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 350 kglm3 and maximum water cement ratio of 0.50, including admixture (plasticiser / superplasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5.0 Cu.m) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 Cu.m) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m’) 7670 kg. of crushed stone sand, but excluding cost of reinforcement grill and fabricating charges, centering and shuttering and also including laying, vibrating with mechanical vibrators, finishing, curing, etc., complete complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS Standards. (No separate payment will be made by the Department for the excess usage of materials).

Supplying, hoisting, laying and fixing in position of RCC hume pipes NP3 class of 900mm dia with suitable collars including labour and jointing materials etc., complete complying with the standard specification and as directed by the Engineer in charge of the works.

Fabricating, supplying and fixing of Shutter Groove Angle made up of 65x65x6mm Mild Steel angle for required height including welding hold fast of size 25x25x6mm Mild steel angle 2 Nos on both sides and conveying and leading the groove angle to the vents. Fixing the angle to the grooves in proper alignment including dismantling the existing damaged groove angles, conveying and stacking at section store. The groove angle should be painted with two coats of AC black paint over one coat of red oxide primer. The rate including cost of materials, consumables, labours charges for all fabricating and hoisting equipments, conveyance, petty civil works and warranty for 5 years etc.., complete complying with standard specification and as directed by the departmental officers.

Fabricating, Supplying and fixing of Top Beam made up of 150x75mm (ISMB 150) duly drilled to suit the Head Set Assembly with required bed bolt made out of 25mm mild steel round rod duly threaded with suitable anchorage arrangements to a height of 0.60m with necessary Fish plate made out of 12mm mild steel plate of size 0.30 x 0.15m 2Nos with required holes. Conveying and leading the top beam arrangements to the work site. Fixing the top beam arrangements at the top of the vent in correct position including dismantling the existing eroded top beam, conveying and stacking and the section stores. The top beam should be painted with two coats of AC black paint over one coat of Red Oxide primer. The Rate including cost of materials, labours, charges for all fabricating and hoisting equipments, cost of petty civil works conveyance charges for labours and materials and warranty for 5 years etc.., complete complying with standard specification and as directed by the departmental officers.

Fabricating, supplying and fixing of 50mm dia Screw Rod made up of Mild Steel duly machined and fully threaded to suit the Head set Assembly and provided with required holes. Conveying and leading the screw rod to the worksite. Fixing the screw rod to the shutter gusset plate with required bolt and nut in proper alignment to the head set including dismantling the existing damaged screw rod, conveying and stacking at section store. The Screw rod should be painted with two coats of AC black paint over one coat of red oxide primer. The rate including cost of materials, labours, charges for all fabricating and hoisting equipments, conveyance charges for labours and materials and warranty for 5 years etc.., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing of Head Set Assembly Light duty with hexagonal nut (Approximate 50 Kg) made up of cast iron including moulding, machining and the hexagonal nut threaded to suit the Screw Rod provided with thrust bearings for smooth operation. Conveying and leading the head set assembly to the work site. Fixing the head set assembly to the top beam by using required rust free bolts and nuts in proper alignment including dismantling the existing damaged Head set assembly supplied with operating key and the both should be painted with two coats of AC black paint over one coat of red oxide primer. The rate including cost of materials, labours, charges for wooden pattern, moulding and charges for labours and materials and warranty for 5 years etc.., complete complying with standard specification and as directed by the departmental officers.

Fabricating, Supplying and erection of Screw gearing steel shutters of size above upto 1.00 m width consist shutters of skin plate made out of 8mm thick mild steel plate and horizontally stiffened with 65x65x6mm mild steel Angle at an interval not more than 0.50m and vertical stiffeners made out of same section at an interval not more than 0.60m and provided with 8mm mild steel gusset plate of required size on both sides fastened with rust free bolts and nuts etc. Conveying the fabricated shutter by using lorries including loading, unloading and leading the shutter to the vent. Dismantling the eroded shutter and shuttering arrangements by using necessary gas cutting equipment. Erecting the new shutter and the shuttering arrangements in the vent in proper position by using necessary hoisting equipment. The shutter shall be painted with two coats of Anticorrosive black paint over one coat of Red Oxide Primer. The rate including cost of materials consumables, labours power charges, conveyance charges for all equipment required conveying the dismantled materials to the section stores, cost of petty civil works, trial operation of shutter and warranty for 5 years etc.., complete complying with standard specification and as directed by the departmental officers.

Earth work excavation deploying earth moving machinery for desilting channel having a width of 3m to 10m and forming bund on either sides and depositing the earth on banks including jungle clearance etc. complete Complying with standard specification and as directed by the Departmental Engineers.

Dewatering using 5HP diesal Engine pumped inlcuding hire charges cost of diesal Engine oil, pump operator, labour charges conveyance of pumpset and fuel to site and back loading and unloading anyother inciditial charges etc.., complete complying with standard specification and as directed by the departmental officers.

Supplying and Fixing of PVC Water bar 150mm with single bulp including cost of required accessories as directed by the departmental officers etc.., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing in position of seepage pipes of 75 mm dia PVC pipe with standing working pressure of 6 Kg/cm2 required lengths with required filter media (excluding the cost of filter media) for abutment and wings including cost and conveyance of all materials to work site and labour charges for fixing etc.,complete complying with standard specification as directed by the departmental officers.

GST at 18%

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