Rehabilitation and Improvements to the Upper Nirar Tunnel Exit and its Leading Channel at Vellamalai of Valparai Taluk in Coimbatore District.

Amount

Clearing the light jungle and destroying the same effectively, complete complying with standard specification and and as directed by the departmental officers.

Dismantling, clearing away and carefully stacking of materials useful for reuse for any thickness of walls of stone masonry in cement mortar walls in complete complying with standard specifications and as directed by the departmental officers.

Earth work excavation and depositing on banks with initial lead of 10 m and initial lift of 2m in hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc.,including refilling the sides of foundation with excavated earth shoring strutting and bailing out water wherever necessary, well rammed consolidated and depositing the surplus earth in places as shown by the departmental officers and clearing, levelling the site etc., complete complying with standard specification and as directed by the departmental officers. (Open Earth Work Excavation)

Earthwork excavating for Foundation and depositing on bank with initial lead of 10m and initial lift of 2m in soft disintegrated rock, laterite, soft rock or kankar, not requiring blasting for foundation including refilling the sides of foundation with excavated earth shoring strutting and bailing out water wherever necessary, well rammed consolidated and depositing the surplus earth in places as shown by the departmental officers and clearing, levelling the site etc., complete complying with standard specification and as directed by the departmental officers. (For Foundation Narrow excavation)

Random Rubble masonry in cement mortar 1:4 (one cement and four M-sand) using old rubble stones and bond stones including simultaneous pointing the exposed surfaces with same mortar and all incidental charges such as bailing out of water, curing, finishing complete complying with standard specifications and as directed by the departmental officers.

Hire Charges for Diesel Pump Set for dewatering the stagnant water in the canal withcrew including cost of fuel and transporting chargesetc..complete complying with standared specifiaction and as directed by the departmental Engineers.

Providing steel centering for cement concrete block, column, footing, pedestal, plinthbeam, grade beam etc.,which require nominal strutting etc, using MS sheets 10 gauge thick of size 90 x 60 cm stiffened with MS angle of size 25mm x 25mm x 3 mm laid over silver oak joists of size 10 cm x 6.5 cm spaced at 90 cm c/c duly supported and removing the strutting after specified period without damaging the concrete laid complete complying 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 material to the site including all labour charges and incidental charges etc., complete complying with standard specifications and as directed by the Engineer in charge.

Supplying and erecting centering for sides and soffits including necessary supports and strutting for vertical / sloped surface as detailed with all cross bracings using mild steel sheets of size 90cmx60cm and 10BG stiffened with welded mild steel angle of size (25x25x3)mm laid over silver oak joists of size (10x6.5)cm spaced at about 90cm C/C and supported by casurina props of 10cm to 13cm dia spaced at not more than 75cm C/C etc., complete complying 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 material to the site including all labour charges and incidental charges etc., complete complying with standard specifications and as directed by the Engineer in charge.upto 3.29m height

Above 3.29m height to 4.29m

Above 4.29m height to 5.29m

For Plain Surfaces such as RCC floor slab,croof slab, beams, lintels, bed blocks, landing slab, waist slab, portico slabs amd beams,etc

Providing and laying Plain Cement concrete M10 grade (Design Mix)with well graded aggregates using coarse aggregate of size 40 mm and Down graded confirming to IS Specified grading and mixing the incredient in approved mixers/batching plant (to produce concrete of the specified characteristic strength of 10N/mm2 at 28days) including dewatering the placement site by bailing/pumping and by diverting wherever necessary laying the concrete in layers and in bays with all leads and lifts compacting and finishing the surface water curing so as to attain the profile and strength specified in the approved drawing and specification complete complying with standard specification and as directed by the Engineer in charge of the work.

Providing and laying in position, Plain Cement concrete of grade M15 (Design Mix) with well graded aggregates and the nominal maximum size of HBGS jelly 40 mm and down graded confirming to IS Specified grading and mixing the ingredients 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 drawing complete complying with standard specification and as directed by the departmental officers. Below GL

Above GL

Providing and laying in position, Standardised Plain Cement Concrete Mix M-20 Grade in accordance with IS:456-2000,using 40mm and down graded hard broken granite stone jelly for all 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 above ( 5.0 cu.m) 7730 kg of 40 mm machine crushed stone jelly and with about (3.3 cu.m) 5156kg. of 20mm 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., and 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)

Providing and laying in position, Standardised Plain cement concrete Mix M-25 Grade in accordance with IS:456-2000, using 20mm and down graded hard broken granite stone jelly for all items of works with minimum cement content of 350 kg/m3 and maximum water cement ratio of 0.50, 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) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670 kg. of 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 and laying in position, Standardised Reinforced cement concrete Mix M-25 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 350 kg/m3 and maximum water cement ratio of 0.50, 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) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670 kg. of 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 and laying in position, Standardised Reinforced cement concrete Mix M-30 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 400 kg/m3 and maximum water cement ratio of 0.50, 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) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670 kg. of 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)

Supplying and fabrication of Steel required for all works involved in the schedule including cost of steel, cost of fabrication, labour charges for cleaning the rods straightening, cutting, bending, tying grills including overlapping to the required length wherever necessary and placing the reinforcement in position as specified in the drawings including cost of binding wire, provision of spacer bars, cover blocks and all other incidental charges etc. complete as per standard specification and as directed by the departmental officers.

Supplying and fixing PVC water Bar 150mm wide with single bulb including all labour charges,conveyance charges for fixing etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing of 110 mm dia PVC pipes filled with no fine concrete for weep holes (Pressure relief arrangements) including cost of material, and labour changes etc complete as directed by the Engineer in charge of work etc complete complying 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 walll for a size of 45cmx45cmx60cm and filling with 20mm metal of 30cm thick in Ist layer and 40mm metal of 30cm in IInd Layer the rate is including cost of metals etc complete complying with standard specification and as directed by the departmental officers

Supplying and filling for inverted filter with filling M-sand in layers of not more than 20 cm thick well watered, rammed and consolidated etc. complete complying with standard specification and as directed by the departmental officers.

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

Manufacture Supplying and fixing of stainless Steel Hand rails for staircase using 50mm dia 304L Grade Stainless steel pipe of 1.60mm thick at required location to a height of 900mm from finished floor level welded to 38mm dia stained steel pipe post of 1.00mm thick as vertical at 900mm centre with 2 Nos. of 25mm dia intermediate horizontal stainless steel pipe of 1.60mm thick in between. The Vertical pipe has tube welded to the 100x100x6mm MS base plate encased in the base concrete. The rate is inclusive of the charges for cutting, bending, welding, grinding, polishing, conveyance, electrical charges, etc., complete.

Supplying and fixing in position of bitumen Pad 20 mm thick for Construction / Contraction joints in Plain Cement Concrete and Reinforced Cement Concrete and including labour charges for cuting, fixing in proper position and removing bitumen pad and filling deep in joints using contractors own materials .complete complying with standard specification and as directed by the departmental officers

Plastering with cement mortar 1:4 (One cement and four sand) 20mm thick in all floors complying with standard specification and as directed by the departmental officers.

K.RAJAGOPALAN AND CO (BID ID -1459742)