REHABILTATION OF CHECK DAM ACROSS PALLAM IN SF NO 3 OF SULUR VILLAGE IN SULUR TALUK OF COIMBATORE DISTRICT

Amount

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

Dismantling random rubble masonry including clearing away and carefully stocking material for reuse for any thickness of wall etc.,complete complying with standard specifications and as directed by the departmental officers.

Dismantling Plain cement concrete etc., complete complying with standard specification and as directed by the departmental officers.

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

Cement concrete of M10 grade (Design Mix) with well greaded aggregate and the maximum Nominal size of course aggregate of 40mm to is specified grading and mixing by mixer machine (to produce concrete of the specified grading and characteristic strength of 10N/mm2 at 28 days) 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 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 Engineer and complying with standard specifications.

Providing and laying in position,plain cement concrete of M15 grade (Design Mix) with HBGS jelly aggregates and the maximum nominal size of Course aggregates of 20mm downgraded to IS specified grading and mixing by mixer machine (to produce concrete of the specified 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.

Below ground level upto 1.50m depth

Below ground above 1.50m depth

Providing and laying in position,plain cement concrete of M15 grade (Design Mix) with hard broken granite jelly aggregates and the maximum nominal size of course aggregate of 40mm and down graded to IS specified grading and mixing by mixer machine (to produce concrete of the specified 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.

Below ground level upto 1.50m depth

Above ground level upto 4.50 m height

Providing and laying in position, standardised Reinforced Cement Concrete Mix M-20 Grade 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 (5.00 cu.m.) 7730 kg. of 20mm machine crushed stone jelly and with about (3.30 cu.m.) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cum) 7670 kg. 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 requirements of IS standards. (No separate payment will be made by the Department for the excess usage of materials).

Providing steel centering for concrete block, column footings, pedestal, plinth beam, grade beam, etc which require nominal strutting and as detailed below with all cross bracings , using MS sheets, of size 90cm X 60cm and 10 BGstiffened with welded MS angle of size 25mm X 25mm X 3mm laid over silver oak joists of size 10cm X6.50cm spaced at 90cm c/c duly supported by casurina pips of 10m to 13cm dia spaced at not morethan 75cm c/c etc., complete complaying with standard specification and as directed by the departmental officers.Scaffolding and centering charges for the structural components is including the cost and conveyance of all materials to the site including all labour charges and incidental charges etc.,

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29m height for vertical/slopped surface as detailed below with all cross bracings using mild steel of size 90cm X 60cm and 10 BG stiffened with welded mild steel angle of size 25mm X 25mm X 3mm at laid over silver oak joists of size 10cm X6.50cm spaced about 90cm c/c and supported by casurina props of 10cm to 13cm dia spaced at not morethan 75cm c/c etc., complete complaying with standard specification and as directed by the departmental officers.Scaffolding and centering charges for the structural components is including the cost and conveyance of all materials to the site including all labour charges and incidental charges etc.,

Supply and fabricating of steel required for all RCC works involved in the schedule including cost of steel , cost of fabrication, labour charges for cleaning the rods, straightening, cutting, bending, tying grills including over lapping to the required length wherever necessary and placing reinforcement in position as specifed in the drawing including cost of binding wire, provision for space bar, cover blocks and all other incidental charges etc.,

Supplying and laying of launching apron revetment with loose boulders (jeddy stones) of each size greater than 300mm and weight more than 40kgs including cost of labour etc., complete complying with standard specification and as directed by the departmental officers.

Rough stone dry packing for revetment using old hard granite stones including cost of wedges for filling the gaps including cost and conveyance of all materials and all labour charges etc.,complete complying with standard specification and as directed by the departmental officers.

Rough stone dry packing for revetment using new hard granite stones obtained from approved quarries including cost of wedges for filling the gaps including cost and conveyance of all materials and all labour charges etc.,complete complying with standard specification and as directed by the departmental officers.

Supplying and filling with M sand for inverted filter in layers of not more than 15 cm thick,well watered,rammed and consolidated etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and filling 40 mm jelly for inverted filter with a thickness of 40cm over sand filling as a filter media for concrete blocks including cost of materials, conveyance, labour chargers for laying etc.,complete complying with standard specification and as directed by the departmental officers.

Manufacturing,supplying and placing of cement concrete block of size 1.50mX1.50mX0.90m in M15 using 20 mm hard broken granite stone jelly including cost of moulding charges, casting of slab, finishing, curing,stacking for premeasurements,transportation and placing in position as per the drawings etc.,complete complaying with standard specification and as directed by the departmental officers.

Supplying and filling with gravel in between gaps of CC blocks including cost of gravel and stacking to the department gauge for premeasurement etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing PVC pipes of size 75mm dia with having working pressure as ISI standards (6 kgf/cm2) for pressure relief holes (weep holes) etc., including all labour charges for fixing and cost and conveyance of all materials to the work site etc.,complete complaying with standard specification and as directed by the departmental officers.

Providing filter media arrangements to the pressure relief holes in the rear side of retaining wall for a size of 45cmx45cmx60cm and filling with 20mm metal of 30cm thick in Ist layer and 40mm metal of 30cm thick in lInd layer,the rate is including cost of metals etc., complete complying with standard specification and as directed by the departmental officers.

Earth work excavation by deploying earth moving machinery for desilting channel having a width of more than 10m and forming bund on either sides and depositing the earth on banks including jungle clearance etc.,complete and as directed by the departmental officers.

Earth work in all except hard rock requiring blastering and conveying earth will all levels and lifts for formation of bund with lead of 5km deploying earth moving machinery and tippers including benching, formation of bund breaking clods, sectioning etc., complete complying with standard specification and as directed by the departmental officers.

A T Santhanam

B JOTHEESWARAN