Providing UGSS main line and distribution line at KK nagar extension in Ariyalur Municipality.

Earthwork excavation and depositing on bank with initial lead of 10 m and lift of 2 m in narrow trenches having bed width 1.25m and below for laying of pipes for water supply and sewerage works in following type of soil strata excluding refilling, disposal of surplus earth, shoring and strutting beyond 2m depth but including hand bailing out water wherever necessary and all other incidental charges. etc. complete and as directed by the Engineer in charge.Hard stiff clay, black cotton soil,hard red earth,shales, murram gravel, stoney earth and earth mixed with small boulders and hard gravelly soil.-SS20B 0 - 2m depth

2-3m depth

Providing shoring & strutting with sheet piles /wooden piles &planks, with necessary support for excavation beyond depth of 2.00m, including cost of sheet pile/ wooden piles, plank & other materials, removing shoring and strutting after the pipes are laid etc complete as directed by the TWAD Board officers

Refilling the trenches with excavated earth (other then sand) complying with standard specification for filling the trenches including watering consolidation etc., complete as directed by the TWAD Board Officers

Disposal of surplus earth including loading & unloading, conveyance within a distance of 5.00 km , spreading and levelling etc., at the sites shown by local body and as directed by TWAD Board officers.

Supplying and filling in foundation and basement with Crushed Stone Sand (M- Sand) in layers of not more than 15cm thick well rammed watered and compacted etc., complete complying with standard specification.150 mm DWC Pipes

Barricading work (Where the lines are in narrow width of municipality area, busy streets like Market, Bus-stand and in the Highways etc.) for laying of pipe line using casurina poles at 1.50m center to center (8cm to 10cm dia. and 1.80m height) vertical with horizontal poles in two rows, painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including supplying, delivery and fixing of GI sheet (0.90m x 0.8mm thick) in the horizontal poles and fixing 75mm dia. reflectors including earth work excavation for fixing vertical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by TWAD Board officers.

Providing Encasing concrete for encasing sewer pipes wherever required as directed by the Engineer in charge in Plain Cement Concrete 1:3:6 ( One sulphate resistant portland cement, three river sand : six blue granite metal) using 20mm and below ISS HBG, including shuttering, compacting, curing and watering etc.(0-1.5m below GL)

Lowering charges for PVC/DWSC Rigid pipes and specials trench ,laying to proper grade and alignment and jointing. (150 mm dia)

Supply and Delivery of DWC Structured Wall Polyethylene Piping Systems (Pipe with online/offline coupler and elastomeric sealing ring) with required specials non-smooth external annular corrugated and smooth internal surface (Double wall) (SN 8 Class) for non-pressure underground sewerage, drainage application generally as per IS-16098 (Part-2) type B.150mm ID SN 8 pipe

Construction of RCC Manholes of different depths as per type design/drawing along sewer lines and provided with tight fitting FRC manhole frames and covers of 600 mm dia., of approved make and quality including supply and fixing of encapsulated PVC foot steps. The manhole shall be of RCC M 30 concrete and plastered with CM 1:3(One sulphate resistant portland cement and three sand ), 20mm thick inside and as per type design with foundation concrete 150mm thick in CM 1:4:5(One sulphate resistant portland cement four sand fice agreegate ) ,using 40mm HBG. Benching and channeling should be provided in the manhole and suitable diameter pipes for House service connection (Not exceeding 6 Nos. for each manhole) to be left in the Manholes as directed by the Engineer in-charge. The rate shall include earthwork, backfilling, and removal of surplus earth and depositing within 500m, barricading, provision of danger lights etc.2 -3.00m depth

Labour charges for cutting open BT roads and WBM roads as directed by the TWAD Board Officers

Supply and delivery of 110 mm dia2 UN PLASTICIZED NON - PRESSURE POLYVINYL CHLORIDE (PVC-U) PIPES FOR USE IN UNDERGROUND DRAINAGE AND SEWERAGE SYSTEMS as per IS 15328/2003 (58Nos X 6m=348m )

Earth work excavation house service connections from property limits to manholes on sewers

Lowering of UPVC Pipe house service connections from property limits to manholes on sewers

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

Plain Cement Concrete 1:2:4 (one cement, two Crushed Stone Sand (M- Sand) and four coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification