Repair and Maintance work at New Busstand HDPE pipe and Chamber Arrangements in North Zone Thoothukudi City Municipal Corporation

Dismantling the existing RCC including all labour and cleaning away from the site etc, complete as per standard specification

Supply and delivery of 180MM HDPE pipes for sewerage PE 100 PN 6 conforming to IS : 14333/1996 (amended in 2009)

Earth work excavation and depositing on bank with initial lead of 10m and lift of 2m narrow trenches for laying of pipes for water supply in the following type of soils as directed by the departmental officers sand, silt or other loose soil, wet sand or silt not under water light black cotton soil, sandy loam and ordinary soil.

Lowering HDPE pipes and specials to trench and laying to proper grade and alignment and as directed by the TWAD Officers (180mm TO 250mm dia) HDPE Pipe

Jointing HDPE Pipes and Specials by butt fusion welding / electro fusion welding joints using fusion equipment as per ISO 21307-2011 and as per IS 7634 (part 2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per directed by TWAD Board Officers.(180mm)

Refilling with excavated earth in layer of 30cm watered well rammed and consolidated conforming to standard specification including labour charges as directed by engineering incharge.(for 110mm)

Earth work Open excavation by Mechanical Means for Open Earthwork 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 100 mts and clearing and levelling including dressing of sides and raming of bottoms etc., complete complying with standard specification and as directed by the departmental officers.

Cement Concrete 1:5:10 (One Cement, Five crushed stone sand and Ten hard broken stone jelly) using 40 mm gauge hard broken granite stone jelly for foundation including dewatering wherever necessary and laid in layers of not more than 15 cm thick well rammed, consolidated and including curing etc. complete complying with standard specification and as directed by the departmental officers -Mixing by mechanical means

Providing and laying in position, Standardised Concrete Mix M-25 Grade by insitu machine mix concrete adopting weighing batch method 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 kglm3 and maximum water cement ratio of 0.50, including admixture (plasticiser / superplasticiser) 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 crushed stone 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 providing fixtures like fan clamps in the RCC floor/ roof slabs wherever necessary without claiming extra, 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, fabricating and placing in position Mild Steel / Ribbed Tor Steel reinforcement grills of all variety like HYSD/CTD/TMTand all grade like Fe 500, Fe550D, Fe 500 D etc., for all RCC works as per design given including cost of steel reinforcement and G.I. binding wire, wastage etc. complete complying with standard specification and as directed by the departmental officers.(Contractor has to make his own arrangements for the supply of steel reinforcement and binding wire)