Construction of Check Dam across Cooum river near Perambakkam Village in Thiruvallur Taluk and District.

Clearing the scrub jungle complete complying with standard specification and as directed by the departmental officers

Clearing the heavy jungle complete complying with standard specification and as directed by the departmental officers

Earth Work Excavation for foundation in all soils and sub soils and to full depth as may be directed by the Departmental Officers except hard rock requiring blasting including shoring, strutting and baling out water wherever necessary and refilling the sides of foundation with excavated soil in layers not exceeding 15 cm thick, well rammed and consolidated and depositing including all initial leads and initial lifts, etc., complete complying with standard specifications and as directed by the departmental officers (Open Excavation)

Earth work excavation in all soils and sub soil to full depth as directed by departmental officer except hard rock requiring blasting by deploying earth moving macheneries including jungle clearance, leveling etc. and conveying with a lead of 1Km the excavated soil to the low lying area including leveling etc., complete. complying with standard specifications and as directed by the departmental officers

Earth Work Excavation for foundation in all soils and sub soils and to full depth as may be directed by the Departmental Officers except hard rock requiring blasting including shoring, strutting and baling out water wherever necessary and refilling the sides of foundation with excavated soil in layers not exceeding 15 cm thick, well rammed and consolidated and depositing including all initial leads and initial lifts, etc., complete complying with standard specifications and as directed by the departmental officers (Narrow Excavation)

Earthwork in all soil except hard rock requiring blasting and conveying for formation bund with lead of 5.00 Km deploying earth moving machineries and tippers in layers of 15cm thick including benching formation of bund breaking clods sectioning and extra watering and consolidation by power roller including hire charges at side also including mineral cost seigniorage cost and other taxes etc., complete complying with standard specifications and as directed by the departmental officers

Regrading the river bed including jungle clearance deploying the heavy machinery like dozer on use hour basis including cost of hire charges, fuel, labour etc, complete complying with standard specifications and as directed by the departmental officers. (D-80-A12)

Providing and placing in position of plain cement concrete M 10 grade using River sand and graded hard blue granite broken stone jelly of 40 mm size mixing with mixer machine including the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick, compacting, consolidation finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works up to 1.50 m depth below G.L and upto 1.00 m Height above G.L

For works above1.50m.to 4.50m. Below G.L

Supplying and erecting centring for vertical plain / RCC concrete walls of supply channel, retaining wall etc of following height with necessary supports, all cross bracing with mild steel size of 90 cm x 60 cm and gauge BG 10 stiffened with welded mild steel sheet angles of size 25 mm x 25 mm x 3 mm for bearing laid silver Oak / Country wood joist of size 7.50 cm x 5.0 cm spaced @ about 90 cm C / C and supported by Casurina props of 10 cm to 13 cm spaced @ 75 cm C / C, etc., complete complying with standard specifications and as directed by the departmental officers (Vertical Centering)

Vertical Centering upto 0.90 m Height

Vertical Centering upto 1.80 m Height

Vertical Centering upto 2.70 / 3.00 m Height

Vertical Centering 3.00 m to 4.00 m Height

Vertical Centering 4.00 m to 5.00 m Height

Vertical Centering 5.00 m to 6.00 m Height

Vertical Centering 6.00 m to 7.00 m Height

Supplying and erecting centering for vertical plain / RCC concrete walls of supply channel, retaining wall etc for following height with necessary supports, all cross bracing with mild steel size of 90 cm x 60 cm and gauge BG 10 stiffened with welded mild steel sheet angles of size 25 mm x 25 mm x 3 mm for bearing laid silver Oak / Country wood joist of size 7.50 cm x 5.0 cm spaced @ about 90 cm C / C and supported by Casurina props of 10 cm to 13 cm spaced @ 75 cm C / C, etc., complete complying with standard specifications and as directed by the departmental officers (Curved Centering)

Height upto 3.00 m

Height 3.00 m to 4.00 m

Height 4.00 m to 5.00 m

Height 5.00 m to 6.00 m

Height 6.00 m to 7.00 m

Providing and placing in position of plain cement concrete M 15 using River sand and hard blue granite broken stone jelly of size 20 mm mixing with mixer machine including the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick, compacting, consolidation by using vibrators, finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works up to 1.50 m depth below G.L and upto 1.00 m Height above G.L

For works above 1.50 m to 4.50 m below G.L

Providing and placing in position of plain cement concrete M 15 grade using River sand graded hard blue granite broken stone jelly of 60% of 40 mm size and 40% of 20 mm size mixing with mixer machine and laying in layers oincluding the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick, compacting, consolidation by using vibrators, finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works up to 1.50 m depth below G.L and upto 1.00 m Height above G.L

For works above 1.5 m to 4.50 m below G.L

For works above 1.00 m to 4.50 m height above G.L

Providing and placing in position of Reinforced Cement Concrete M 20 using hard blue granite broken stone jelly of 20 mm size with river sand mixing with mixer machine including the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick excluding form works, centring, shuttering and steel fabrications, compacting, consolidation by using vibrators, finishing, watering, curing, etc complete complying with standard specifications and as directed by the departmental officers

For works up to 1.50 m depth below G.L and upto 1.00 m Height above G.L

For works above upto 4.5m height above G.L

Supplying and laying of ready mix for M 25 grade of concrete having characteristic strength not less than specified in the IS:456-2000 using ordinary Portland cement with minimum cement content of 300 kg / Cu.m confirming to IS 8112. Coarse aggregates having a specific gravity of 2.60 using 20 mm downgraded hard blue granite broken stone jelly and fine aggregates without fly ash as per IS 383 - 1970(2007) with suitable water cement ratio not less than 0.45 and not exceeding 0.50 of water quality confirming to IS 456 - 2000 including use of plasticizer of approved make & dosage of required grade at all locations and levels with specified high workability as per IS 1199–1959 (2004). The initial & final setting time confirming IS 12269–1987 (2004) with maximum temperature of concrete at the time of placing should not exceed 32oc. The admixtures affecting the quality and strength of the concrete should not be used and should confirm IS 9103 – 1979 [ usual admixture – Air entraining & water reducing]. Including the cost of hire charges for pump & pumping charges to the required location and levels as specified by the Engineer–in–charge, Curing, testing, laying, compacting, consolidation by using vibrators, finishing, watering, testing charges as per IS 456–2000, 4031–(Part 3 & 6)/1988(2005) & (Part2)/1999(2004) and 516/1959(2004), 4926 – 1976(1990), mix design details to be got and approved before commencement of the work adopting pour card system and other OK cards. Excluding the cost of form works, centering and shuttering and cost of reinforcement grills placed in the position etc, complete complying with standard specifications and as directed by the departmental officers (RCC Works)

Supplying, fabricating and placing in position of Mild Steel or Ribbed Tor Steel for all RCC works as per design & drawing given including cost of steel, binding wire and labour charges for cutting, bending, laying in position and tying with binding wire, etc. complete complying with standard specifications and as directed by the departmental officers

Supplying and filling with clean river sand in layers of not more than 15 cm thick, well watered, rammed and consolidated etc., complete complying with standard specifications and as directed by the departmental officers

Supplying and laying with graded hard blue granite broken stone jelly of varying of size from 80 mm, 63 mm, 50 mm, 40 mm, 25 mm, 20 mm, 12 mm and 10 mm in equal proportions for formation of filter drains and filter bed as shown in drawing etc complete complying with standard specifications and as directed by the departmental officers

Supplying and placing in position of plain cement concrete blocks of size 1.50x1.50x0.90m of M 15 grade concrete using River sand and hard blue granite broken stone jelly of size 20 mm, using river sand, mixing with mixer machine and laying in rows including dewatering wherever necessary, compacting, consolidation by using vibrators, finishing, watering, curing including the cost of erecting and centering including necessary support for plain surfaceses for concrete block of size 1.50 m X 1.50 m X 0.90 m using MS sheets of size 1.50 m X 0.90 m of 10 gauge stiffened with MS angle of size ISS 25 mm X 25 mm X 3 mm supported by MS flats of size 25 mm X 3 mm, conveyance to site with all labour charges etc. complete complying with standard specifications and as directed by the departmental officers

Supplying and fixing PVC water stopper heavy duty of 300 mm width as per IS 15058 / 2001, including cost of all materials, labour charges, etc complete complying with standard specifications and as directed by the departmental officers

Dewatering using 20 HP diesel engine pumpset including Hire charges, cost of diesel, Engine oil, Pump operator, Labour charges, conveyance of pumpset and fuel to site and back, loading, unloading and any other incidental charges etc, complete

Gravel packing in gaps between cement concrete blocks including cost of gravel and filling charges to full depth and stacking for pre-measurements etc complete complying with standard specifications and as directed by the departmental officers

Providing launching apron using new jeddy stone of size not less than 300 mm thick and weight not less than 40 Kg including the cost of new wedges for filling the gaps, finishing etc complete complying with standard specifications and as directed by the departmental officers

Gravel backing for revetment in layers not exceeding 15 Cm thick including stacking for premeasurement, watering, consolidation and trimming the top surface so as to receive the rough stones, etc complete complying with standard specifications and as directed by the departmental officers

Rough stone dry packing for apron and revetment using new stones obtained from approved sources including the cost of new stones wedges for filling the gaps, finishing, etc. complete complying with standard specifications and as directed by the departmental officers

Fabricating, Supplying and erection of Screw gearing steel shutters of size above 1.50 m and upto 1.50m width consist of skin plate made out of 8mm thick mild steel plate and horizontally stiffened with 100x50mm mild steel channel 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 thick 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 specifications and as directed by the departmental officers

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 specifications and as directed by the departmental officers

Fabricating, supplying and fixing of 63mm 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 specifications and as directed by the departmental officers

Supplying and fixing of Head Set Assembly medium duty with hexagonal nut (Approximate 70 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 fre bolts and nuts in proper alignment including dismantling the existing damaged Head set assembly, conveying and stacking at sectio store. The 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 specifications 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 specifications and as directed by the departmental officers

Supplying and fixing of Side Music note rubber seal (Teflon claded) with Mild Steel Flat plate throughout the length of Rubber seal and fitted with the existing structure by means of Mild Steel Washers, Nuts and Bolts including dismantling the old corroded bolts by cutting, removing old flats and hardened or damaged old rubber seals beam, then conveying, loading and unloading and stacking to section store, etc.., complete complying with standard specifications and as directed by the departmental officers

Supplying and fixing of Bottom Flat Rubber seal with Mild Steel Flat plate throughout the length of Rubber seal and fitted with the existing structure by means of Mild Steel Washers, Nuts and Bolts including dismantling the old corroded bolts by cutting, removing old flats and hardened or damaged old rubber seals beam, then conveying, loading and unloading and stacking to section store, etc.., complete complying with standard specifications and as directed by the departmental officers

Providing chequered plate in the operating platform for a vertical lift geared shutter of size 1500 x1500 mm 2no with a platform of size 5500x2500mm. To provide protection arrangements to hoisting arrangements made by vertical posts to 1.20m height on both sides made up of 65x65x8mm mild steel angle fixed at an interval of 1.50m connected. The protection angle cutting to the required sizes and straightening to vertical. The angle should be drilled for 20mm dia by drilling machine at an interval of 0.15m And the GI Pipe is to cut to appropriate length by using cutting machine at work shop. The new chequered plate of 6 mm thickness of M.S.plate shall be checked for flatness and lifted to the overhead platform and marked and cut to exact size. Then the plate shall be laid in the panel welded to the suitable stiffeners below. Suitable holes shall be provided at appropriate places for drainage o rain water. Then all steel members should be given a coat of anticorrosive red oxide primer over which two coats of industrial black paint is applied. The cost includes cost of all materials, process charges like welding, cutting & drilling, labour charges for loading ifting, unloading, transport, erection, scaffolding charges, hire charges for equipments like chain pulley block, power charges from generator, conveyance to site and clearing them after completion of work, risk allowance for working at a height of more than 3m, cost of consumable like diesel, oil, welding rods & oxygen gas, warranty for 5 years, etc., complete complying with standard specifications and as directed by the departmental officers

GST 18 % in Figures

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