Rehabilitation and Modernization of the Nanjekavundapalayam Check Dam in SF.No.56,57 in Thekkampatti Village of Mettupalayam Taluk of Coimbatore District

Clearing the Juliflora Jungle with uprooting and destroying the same effectively complying with standard specification and as directed by the departmental officers

Earth work excavation for foundation depositing on bank with an initial lead of 10m and initial lift of 2m in sand , silt or other loose soil, wet sand or silt not under water light black cotton soil , sandy loam and ordinary soil including excavated earth,hard stiff clay,stiff black cotton ,hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders(SS20B),soft disintegrated rock,laterite,soft rock or kankar not requiring blasting complete complying with standard specifications and as directed by the departmental officers (Open Excavation)

Earth work excavation for foundation depositing on bank with an initial lead of 10m and initial lift of 2m in sand , silt or other loose soil, wet sand or silt not under water light black cotton soil , sandy loam and ordinary soil including excavated earth,hard stiff clay,stiff black cotton ,hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders(SS20B),soft disintegrated rock,laterite,soft rock or kankar not requiring blasting complete complying with standard specifications and as directed by the departmental officers (Narrow excavation)

Providing and laying Plain Cement concrete of M10 grade (Design Mix) using 40mm HBGS jelly (well graded) confirming to IS specified grading (to produce concrete of the specified grading and characteristic strength of 10N/mm2 at 28 days) and mixing the ingredients by mixer machine including dewatering by bailing/pumping wherever necessary laying the concrete in layers and in bays with all leads and lifts, compacting and finishing the surface, watering, curing etc.,complete complying with standard specifications and as directed by the departmental officers.

Below ground level upto 1.50m

Above Ground level upto 4.50m depth

Providing and Laying in position, Plain Cement Concrete of M 15 grade (Design Mix) with well graded aggregates and the maximum nominal size of HBGS jelly of 40mm and down graded confirming to IS specified grading and mixing by mixer machine ( to produce concrete of the specified grading and characteristic strength of 15N/mm2 at 28 days) including dewatering by bailing/ pumping wherever necessary laying the concrete in layers and in bays with all leads and lifts, vibrating, compacting, and finishing the surface, watering, curing, for various depth and height below and above ground level so as to attain the profile and strength specified in the drawings as per the direction of the departmental officers and complying with standard specification.

Providing and laying in position, (Skin wall) Standardised Reinforced Cement Concrete Mix M-20 Grade (Design mix) 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 325 kg/m3 and maximum water cement ratio of 0.55, including 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 ( 5.0 cu.m) 7730 kg of 20mm machine crushed stone jelly and with about (3.3 cu.m) 5156kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670kg of M.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 requirement of IS standards. (No separate payment will be made by the Department for the excess usage of materials) (For wearing coat)

Supplying and erecting steel centering including necessary supports for plain surfaces such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm 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. complete complying with standard specification and as directed by the departmental officers. (Below Sill )