Reconstruction of Maravamangalam Channel and Well Syphon in Lessis Extention canal across the Sivagangai town bypass branching from 129/2Km of Thanjavur -Manamadurai Road at kalkulam Village in Sivagangai Taluk of Sivagangai District.

Dismantling ,clearing away and carefully stacking materials useful for reuse for any thickness of wall in brick masonry in cement mortar wall under 3 m High as directed by the Engineer in charge of the works as per technical Specification( W -15 )

Dismantling ,clearing away plain cement concrete as directed by the Engineer in charge of the works as per technical Specification ( W -34 )

Dismantling with out damaging the near by structures if any ,clearing away reinforced cement concrete as directed by the Engineer in charge of the works as per technical Specification ( W -35 )

Earth work excavating and depositing on bank with a initial lead of 10 m & 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 of boulders hard gravelly soil complying with Standard Specification and as directed by the departmental Officers.(61-SS20B)

Earth work Excavation for foundation in hard stiff clay,stiff black cotton soil, Hard red earth, shales, murrams, gravel, stoney earth and earth mixed with small size boulders and hard grvelly soil depositing on bank including shoring strutting and bailing out water wherever necessary, well rammed consolidated and deposting the surplus earth in places as shown by the departmental officers with an initial lead of 10metres and an initial left of 2 metres and clearing, levelling the site etc., complete complying with standard specification and as directed by the departmental officers.

Collection and Supply of Sand gravel mix 1:1 (one sand and one gravel) ratio for basement / filter zone including stacking, mixing and spreading the sand gravel mix in layers of not exceeding in 150 mm thickness over properly prepared surface, watering and consolidating the same with approved type of compaction equipment including stacking for pre-measurement etc complete complying with the standard specification and as directed by the Engineer in charge of the work.

Providing and placing in position of Plain Cement Concrete M15 using hard broken granite coarse aggregate (well graded) size of 40mm to I.S. Specification grading (to achieve the specified characteristic strength of 15 N /mm2 at 28 days) and mixing the ingredients by using mixer machine including dewatering of the placement site by balling/pumping and dewatering wherever necessary laying the concrete in layers as directed and in bays, compacting, watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawings and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29m 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 25 mm x 25 mm x 3 mm for boarding laid over silver oak joist of size 10cm x 6.5 cm spaced at about 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc., complete complying with standard specification and as directed by the departmental officers. (payment for centering shall be given after the concrete has been laid)

For Circular Centering

For Centering without strutting (up to basement)

Centering With Strutting

Providing and placing in position of Plain Cement Concrete M15 using hard broken granite course aggregate (well graded) of nominal maximum size of 20mm graded to I.S.Specificaiton grading ( to achieve the specified characteristic strength of 15 N / mm2 at 28 days ) and mixing the ingredients in by using mixer machine including dewatering of the placement site by bailing / pumping and dewatering wherever necessary laying the concrete in layers as directed and in bays compacting and vibrating watering curing finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawing and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers. (with Vibrator)

Providing and laying in position of Standardised Concrete Mix M20 Grade in accordance with IS 456-2000 using 20 mm down graded hard broken granite stone jelly for all RCC items of works with minimum cement concrete of 325 kg/m3 and maximum water cement ratio of 0.55, inculding admixture (plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5cu.m) 7730kg of 20mm machine crushed stone jelly and with about (3.3 cu.m) 5156 kg of 10-12mm machinecrushed stone jelly and with about (4.79 cu.m) 7670 kg of sand, but excluding cost of rainforcement grill and fabricating charges, centering and shuttering and also incuding laying, Vibrating with mechanical vibrators, finishing, curing, etc., complete complying with standard specification and as directed by the departmental officers.

Supplying, fabricating and placing in position of ribbed tor steel bars of various diameters for all reinforced concrete works, including cost of rods and binding wire, labour charges for cutting the bending, tying and fixing in position for various depths and heights below and above ground level complete as directed by the Engineer complying with standard specification

Providing and placing in position Plain Cement Concrete of M20 using hard broken granite coarse aggregate (well graded) of nominal maximum size of 20mm and down graded to I.S specification grading ( to achieve the specified characteristic strength of 20 N/ mm2 at 28 days ) and mixing the ingredients in by using mixer machine including dewatering of the placement site by bailing / pumping and dewatering wherever necessary, laying the Concrete in layers as directed and in bays compacting and vibrating , watering, curing, finishing the surface with all leads and lifts so as to attain the profile and strength as specified in the approved drawing and specification for various depth and height below and above ground level etc., complete complying with standard specification and as directed by the departmental officers. (With Vibrator)

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