Comprehensive Restoration and Rejuvenation of Adayar Drains in Meenambakkam Drain (Reach-II) in Pallavaram Taluk of Chengalpattu District.

Amount

Dismantling clearing away and carefully stacking materials, useful for reuse for any thickness of walls for Brick / Stone masonry in CM 1:4 under 3m height as directed by the Engineer in charge of the works and as per the technical specifications

Earth work excavation for foundation in all soils and sub-soils and to full depth as may be directed except in rock requiring blasting inclusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental officers with an initial lead of 10 mts and initial lift of 2 mts. and clearing and levelling the site, etc., complete complying with standard specification.

Earth work excavation for Narrow foundation in all soils and sub-soils and to full depth as may be directed except hard rock requiring blasting inclusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental officers with an initial lead of 10 mts and initial lift of 2 mts. and clearing and levelling the site, etc., complete complying with standard specification.

Driving holes for Piles of finished diametre of 450mm in all kinds soils, all types of rocks, soft rock, weathered rock, hard rock to the required depth using hydraulic rigs with vertical sludge recycling pump of 20 HP using 53KV diesel generator including all tools & plants with necessary accessories for applying Bentonite slurry through pump from tank with required density and by using light crane for lowering & placing the reinforcement cage including lap, welding of reinforcement cage as required with all leads and lifts, interlacing of pile reinforcement into pile cap. including the coat of disposal of spoils / slush etc away from the work site without any onstructions to the work with all leads & lifts, labour, pumping, bailing etc, and includes the cost of all preparatory works in forming and maintaining of working platform with their own cost and timely removal therof to the satisfication including dismantling the laitance concrete upto cutoff level for monolothic concreteing of pile cap, providing stacking places, mobilisation and transferring / reinstalling of piling equipments / asscessories etc from one location to another with necessary power / service connections as required etc, complete complying with technical specifications and as directed by the Engineer in charge. The rate is excluding of RMC Cement concrete and steel which will be paid seperately and this item is only for driving pile and lowering reinforcement work.

Supplying and filling with clean river sand 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.

Providing and placing in position of plain cement concrete M 10 grade using M sand and hard blue granite broken stone jelly of size 40 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,finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

Providing and placing in position of plain cement concrete M 15 using M sand and hard blue granite broken stone jelly of size 20 mm mixing with mixer machine ( to produce concrete of the specified characteristic strength of 15 / mm2 at 28 days). 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

Supplying and erecting centring for vertical plain / RCC concrete walls of supply channel, retaining wall etc specified height with necessary supports, 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 7.50 cm x 5.0 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

For vertical surface 0 m TO 0.90 m

For 1.80 m to 2.70 m & 3.00 m Height

Supplying, fabricating and placing in position Mild Steel / Ribbed Tor Steel for all RCC works including cost of steel, binding wire and labour charges for cutting, bending, laying in position and tying with binding wire etc, complete complying with standard specifications and as directed by the departmental officers.

Supplying and laying of ready mix for M 25 grade of concrete having characteristic strength not less than specified in the IS:456-2000 using ordinary Portland cement with minimum cement content of 300 kg / Cu.m confirming to IS 8112. Coarse aggregates having a specific gravity of 2.6 using 20 mm downgraded hard blue granite broken stone jelly and fine aggregates 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.o 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 & pumping charges to the required location & levels as specified by the engineer – in – charge, Curing, testing, laying, compacting, consolidation by using vibrators, finishing, watering, testing charges as per IS 456 – 2000, 4031 – (Part 3 & 6)/1988(2005) & (Part2)/1999(2004) and 516/1959(2004), 4926 – 1976(1990), mix design details to be got and approved before commencement of the work adopting pour card system and other OK cards. Excluding the cost of form works, centering and shuttering placed in the position etc, complete complying with standard specifications and as directed by the departmental officers. (RCC WORK)

Brick work with fly ash bricks of size 230mm X 110mm X 70mm in C.M.1:4 (One Cement and Four M.sand) including curing etc., complete complying with standard specification and as directed by the departmental officers.

Plastering the surface of walls with Cement Mortar 1:3 (One cement and Three M sand), 20mm thick including curing etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and fixing M.S.Grills for OSR Land / Parks compound wall of design using 25 X 10mm MS flats for outer frame Horizontally & Vertically. The inner vertical grills shall be 10 X 10mm square rods at the spacing of 96mm c/c. The inner horizontal grills shall be 25 X 10mm MS flats adjoining 10 X 10mm square rods both sides at the spacing of 290mm c/c. The horizontal anchoring to wall shall be 20 X 5mm. The vertical anchoring shall be 25 X 10mm. The arrows with vertical shall be 20 X 5mm. (Sketch enclosed) and also as directed during execution.

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.)

Providing band course work flat 10 to 12mm thick and 65mm deep with cement mortar 1:3 (1 cement and Crushed stone sand ( Commercially called M- sand) including rendering smooth, curing, etc., complete as directed during execution.

Providing band course work flat 12mm thick and 75mm deep with cement mortar 1:3 (1 cement and Crushed stone sand ( Commercially called M- sand) including rendering smooth, curing, etc., complete as directed during execution.

Painting the new plastered walls with two coats of Exterior emulsion paint (weather proof) first class quality and of approved colour over a priming coat including thorough scrapping clean removal of dirt etc, complete and including necessary plaster paris putty etc. whereever required as per (IS STD). It must provide excellent resistance against the growth of algae and fungi on the walls. And it must offer excellent protection against alkali and UV degradatio and the durability period should be 5 years.

Supplying and fixing M.S.Grill gate of required size in two shutters with necessary iron members gun metal cups and wheels 75mm dia. With fittings locking arrangements etc. complete including painting a priming coat of approved primer etc. complete (The design of gate furnished is subject to alteration during execution).

GST 18 % in Figures

K.RAJAGOPALAN AND CO