Construction of Bed Dam across Palar River at Eraiyankadu village in Anicut Taluk of Vellore District.

Amount

Clearing scrub jungle etc, complete complying with standard specifications and as directed by the departmental officers

Earth work open well excavation complying with relevant clauses of T.N.D.S.S. with lead upto 10m in hard stiff clay, stiff black cotton soil, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders and hard gravely soil - first depth of 0 to 2m (W-0077) - For skin wall (Below GL 0 to 1m)

Earth work open well excavation complying with relevant clauses of T.N.D.S.S. Well sinking and with lead upto 10 metre in soft disintegrated rock, laterite, soft rock or kankar not requiring blasting - First depth of 2 metre.

For skin wall (Below GL 1 to 3m)

For skin wall foundation (Below GL 3 to 3.7m)

Earth work 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 bailing 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 lifits etc., complete complying with standard specifications and as directed by the Departmental officers. (Narrow excavation)

Earth work in all soils except hard rock requiring blasting and conveying for formation of bund with an extra lead of every 100 m or part thereof deploying earth moving macheneries and tippers including benching , formation of bunds, breaking clods, sectioning etc complete.

Earth work in all soils except hard rock requiring blasting and conveying for formation of bund with an extra lead of every 100 metre or part thereof deploying earth moving machineries and tippers including benching, formation of bunds, breaking clods and sectioning ect., complete complying with Standard Specifications and Drawings as directed by the Departmental Officers.(Lead 5KMCT) total Earthwork quantity for fomation of Flood Bank Formation.

Earth work 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 bailing 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 lifits etc., complete complying with standard specifications and as directed by the Departmental officers. (Open excavation)

Providing and placing in position of plain cement concrete M 10 grade using 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 by finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works 1.50 m depth and upto 4.50 m depth below ground level

For works 4.50 m depth and upto 9.0m depth below ground level

Providing and placing in position of plain cement concrete M 15 using 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 upto 1.50 m depth below ground level and upto 1.0 m height above ground level

For works 1.50 m depth and upto 4.50 m depth below ground level

Providing and placing in position of plain cement concrete M 15 grade using 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 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 upto 1.50 m depth below ground level and upto 1.0 m height above ground level

For works 1.50 m depth and upto 4.50 m depth below ground level

For works 4.50 m depth and upto 9.0m depth below ground level

For works above 1.0 m to 4.50 m height above ground level

Supplying and erecting centring for sides and soffits and strutting upto 3.0 m height for plane surfaces such as RCC slab rectangular beam or L beam lintels and bed blocks, stairs and covering slabs landing beam canopy etc, with 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 10 cm x 6.5 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- Horizontal Circular Centering

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works cutoff walls, toe walls, body walls, abutments, wings and returns etc., which require only nominal strutting using mild steel sheets of size 90cm x 60 cm x and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3mm for boarding, laid over silver oak joists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc.as per technical specifications and as directed by Engineer in charge of works.

Centering up to 3m

Providing and placing in position of Reinforced Cement Concrete M 20 using hard blue granite broken stone jelly of 20 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 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 upto 1.50 m depth below ground level and upto 1.0 m height above ground level

For works 1.50 m depth and upto 4.50 m depth below ground level

For works above 1.0 m to 4.50 m height above ground level

Supplying and laying of ready mix for the following M25 grade of concrete having charaterstic strength not less than specified in the IS 456 - 2000 using Ordinary portland cement with minimum cement content of 300 Kg / cum confirming to IS 8112. Coarse aggregates having a specific gravity of 2.60 using 20 mm down graded hard blue granite broken stone jelly and fine aggregate 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 32 0 C. 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 and pumping charges to the required locations & levels as specified by the Engineer - in - charge,. laying, compacting, consolidation by using vibrators, finishing, watering, curing, testing charges as per IS 456 - 2000, 4031 - ( Part 3 & 6 ) / 1988 ( 2005 ) & ( Part 2 ) / 1999 ( 2004 ) and 516 / 1959 ( 2004 ), 4926 - 1976 ( 1990 ), mix design details to be got approved before commencement of the work adopting pour card system and other OK cards. Excluding the cost of form works, centering, shuttering and cost of reinforcement grills placed in position etc, complete complying with standard specifications and as directed by the departmental officers. RMC RCC M25.

Supplying and laying porous concrete plugs of 1:4 mix ( one cement and four jelly ) using hard blue granite broken stone jelly of size 20 mm for 10 cm dia, 30 cm long including mixing, laying, finishing, curing, etc., complete complying with standard specifications and as directed by the departmental officers

Construction of RCC cast-in-place guide wall 150 mm thick and 1200 mm deep with necessary steel reinforcements as required and specified by the Departmental Engineers with concrete of Grade M15 using sulphate resistant cement of 20 mm down graded HBGS metal) including cost of all materials lead, lift, labour, marking, earthwork excavation, shuttering etc., including dismantling guide wall, scrap value and disposing the dismantled guide wall after construction of Diaphragm wall as directed by the Departmental Engineer,including the cost of steel reinforcement.

Digging the diaphragm wall of 0.60 m thickness including trenching for diaphragm wall of 0.60 m thick in all kind of soil, rock, boulders, dewatering etc., upto the required depth using approved trenching method by mechanical grabs mixing supergrade Bentonite slurry and disposing the excavation materials beyond a lead of 1 Km, washing the trench upto required bottom level specified by adopting either successive panel or alternate method technique from a good continuous leak proof joints to the length and levels required by the Departmental Officers.

Construction of RCC cast-in-place diaphragm wall of 0.60 m thickness with M25 RMC concrete using Ordinar Portland cement 20 mm down graded HBGS metal) with minimum cement concrete of 366 Kg/m3 (including 10% excess cement for under water construction works as per IS 456-2000 and water cement ratio not exceeding 0.55, super plasterers as an admixture including cost of all materials, labour, lead, lift with placing the reinforcement cages including necessary duly approved welded reinforcemnt, with placing and removal of end pipe arrangement as designed and concreting using tremie pipe arrangement for Diaphragm panel upto required top level by adopting either successive panel or alternate method technique to from a good continuous leak proof joints to the length and levels required by the Departmental Officers including dismantling the overburden concrete over the subsurface dyke and conveying the same to the near by site and dumping the same in the low lying area as per schedule of rate S . No. 38 Moblilization & Demobilization of equipment (Excluding cost of reinforcement) and as directed by the Departmental Officers.

Supplying, fabricating and placing in position of MS/RTS rods for all RCC works as per design given including cost of steel,binding wire, labour charges for cutting, bending, laying in position complete as per technical specifications and as directed by the Engineer in charge of works.

Supplying and fixing in position of demarcation R.C.C. pre cast post in Cement concrete of grade M 15 with well graded aggregates and the nominal maximum size of coarse aggregate of size 20 mm of size 0.20 x 0.20 x 1.45 M and 0.45 x 0.20 x 0.30 m base fixing the post 30 Cm depth below ground level, the post includes using 4 numbers of 10 mm RTS main rod to a length of 1.33 M, using 8 mm MS @ 15 cm spacing as strips with steel centering and painting the post with enamel paint allround the post etc. complete and conveying the post to the site of demarcation boundary such as canal bund/water spread area etc including earth work excavation for foundation (45x45x45cm) in HSC having the base plain cement concrete of 15 cm of grade M 7.5 with well graded aggregates and the nominal maximum size of coarse aggregate of 40 mm of 10 cm thick, and the post embedded by using Cement concrete of grade M10 with well graded aggregates and the nominal maximum size of coarse aggregate of 20 mm of 30cm thick as per the drawing enclosed including cost of earth work, concrete, moulding charges, steel reinforcement, finishing, painting them and marking at top of post, etc .complete complying with standard specifications and as directed by the departmental officers

Supplying and filling in position of 15cm thick filling sand for longitudinal and transverse filter as directed by the departemental officers complete complying with standard specification.

Supplying and laying with 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 hard blue granite broken stone jelly of size 20 mm mixing with mixer machine in rows including the cost of bailing/pumping 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

Gravel packing in gaps between cement concrete blocks including cost of gravel and filling charges to full depth and stacking for premeasurements 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

Supplying and fixing the Cement Concrete block of size 300 mm x 300 mm x 250 mm of M15 using hard blue granite broken stone jelly of 20 mm size mixing with mixer machine including the cost and conveyance of all materials to work site, labour charges for fixing the same in position and including all other incidental charges, compacting, consolidation by using vibrators, finishing, watering, curing etc., complete complying with standard specifications and as directed by the departmental officers.

De - watering of using diesel pump set having capacity 15 HP including cost pf hire charges diesel ,labour etc complete complying with standard specification and as directed by the departmental officers. and as directed by the departmental officers ( Rate as per the TWAD Board Shedule of rate)

Providing and fixing Seepage pipes of 110 mm PVC pipes of required lengths for abutments and wings including cost and conveyance of all materials to worksite, cost and labour for 900 mm dia semi-spherical backfill arrangements with 100 mm size broken granite chips at the periphery and labour charges for fixing etc., complete to drain the backfill etc., Complete complying with standrad specifications and as directed by the departmental officers.

Supplying and fixing PVC stopper heavy duty of 300 mm width as per IS 15058 / 2001 including cost of all materials, labour charges, etc., Complete complying with standrad specifications and as directed by the departmental officers.(as per Quotation)

Regrading the river bed including jungle clearance by deploying the heavy machinery like dozer D80A12 on use hour basis including cost of hire charges, fuel, crew, labour charges etc., complete complying with standard specifications and as directed by the Departmental Officers.(The use hours will be calculated according to Log book mainenance of machineries according to the rules in force and as directed by the departmental officers). Regrading River Dozzer D80A12---150/cum.

Drilling of 150 mm Vertical bore wells in hard rock areas to the required depth as directed by the departmental officers including labour charges for inserting casing pipes assembly in the drilled holes, if necessary grouting the casing pipe etc., including transportation charges for the rigs and supporting vehicles from one place to another place (the casing pipe has to be supplied by the contractor at the rates noted in a separate item) Rate as per TWAD BOARD SOR 2022 - 23 Complete complying with standrad specifications and as directed by the departmental officers.

Supplying and erection of PVC slotted pipe for bore wells of size 140mm diameter of best approved quality with ISI mark with necessary PVC coupling etc., complete complying with standard specifications.

Supplying and fixing of suitable end cap for bore wells of 140mm dia PVC pipes. Complete complying with standrad specifications and as directed by the departmental officers.

Supplying and filling in recharge shaft, with graded metal of size 40mm hard broken granite stone jelly and complying with standard specifications and as directed by the Departmental Officers.

Supplying mild steel grill works for windows ventilators, gates, etc., including priming coat as per standard specifications and as directed by the Departmental Officers.

Supplying and fixing of mild steel angles for truss work. Complete complying with standrad specifications and as directed by the departmental officers..

Supplying and erecting of weld mesh 7.5 x 5cm 10 gauge. Complete complying with standrad specifications and as directed by the departmental officers..

Painting new iron work with two coats of synthetic enamel paint of approved colour and quality over the existing primary coat in all floor including the cost of paint etc., complete complying with standard specifications and as directed by the departmental officers.( The paint to be used should be got approved by the Executive Engineer before use on the work).

Refilling with excavated soil ( other than sand ) etc complete complying with standard specifications and as directed by the departmental officers

Earth work in all soils except hard rock requiring blasting and conveying for formation of bund with an extra lead of every 100 metre or part thereof deploying earth moving machineries and tippers including benching, formation of bunds, breaking clods and sectioning ect., complete complying with Standard Specifications and Drawings as directed by the Departmental Officers.(Lead 5KMCT) total Earthwork quantity for fomation of Flood Bank Formation.

Earth Work excavation deploying earth moving macheniery for desilting channel having a width of more than 10m and forming bund on either sides and deposting the earth on banks inculding Jungle clearence and excluding breaking clods consolidating and sectioning etc, complete.

GST 18 % in Figures

Sri Sivaram and co

S.BASKARAN