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| 1 | Earthwork excavation for foundation in all soils and sub soils except in hard rock requiring blasting and depositing on bank with initial lead of 10m and initial lift of 2m inclusive of shoring, shuttering, bailing out water wherever necessary, refilling the foundation with excavated earth other than sandy soil in layers of not more than 150mm thick layers well rammed and depositing the surplus earth within the compound in place shown by the departmental officers and clearing and levelling the site etc., complete. |
| 2 | Labour for cutting of BT Roads for laying water mains etc., complete |
| 3 | Refilling the trenches with available excavated soil other than sand with soft material first over pipeline and then hard material in 15 cm layers with all leads and lifts including consolidation, surcharging etc., complete |
| 4 | 110mm dia HDPE (PN-6) |
| 5 | 225mm dia HDPE (PN-6) |
| 6 | Supply delivery of the following size of HDPE pipes PE 100 class PN 6 confirming to IS 4984/1995 as specified in Technical specifications in standard lengths including labour charges for loading. Unloading and stacking at site etc. complete as per standard specifications and as directed by the Departmental Engineer. The rates are inclusive of transportation charges to stockyard anywhere in Tamilnadu |
| 7 | 110mm dia HDPE (PN-6) |
| 8 | 225mm dia HDPE (PN-6) |
| 9 | Supply and delivery of the following size of HDPE Specials as per IS 8360 / 1977 / Part I (Reaffirmed 1992) Part II and III (Reaffirmed 2002) of conforming to IS specifications at site of work including loading, transportaion, unloading, insurance etc., complete and as directed by Engineer incharge |
| 10 | 110mm dia 90º Bend |
| 11 | 110mm dia Equal Tee |
| 12 | 225mm dia 90º Bend |
| 13 | 225mm dia Equal Tee |
| 14 | Supply and delivery of following size of DI D/F Gate sluice valves (soft seated) resilient seated soft sealing Gate Valves(Sluice Valves) with body Bonnet of Ductile cast iron of Grade GGG 40 or equivalent grade, Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 O- Ring protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 14846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and out side with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 and with 5 years |
| 15 | 100mm dia |
| 16 | 200mm dia |
| 17 | Manufacture, Supply and Delivery of 50mm dia Tamper proof DI single chamber double orifice, triple function (ventilating, admitting and venting during operation) air release valves with pressure range from PN 1.0 to 2.5 with body and cover made of Ductile Iron of Grade GGG 40 or equivalent grade conforming to IS 1865 with Food Grade Epoxy Powder coating(EP-P) inside and for outside of colour blue RAL 5005. All internal parts such as float, shell etc., cover bolts, made of Austenitic alloy steel of SS AISI 304/316. The float shall be made of Polytetrafluroethylene/ Austenitic alloy steel of AISI 304/316. Gaskets and seals of EPDM / Neoprene rubber for TWAD Board works anywhere in Tamil Nadu and with 5 years |
| 18 | Supply and delivery of Ductile Iron Specials as per IS 9523/2000 specification (100mm to 200mm). |
| 19 | Lowering of following size of HDPE pipes and specials to trench and laying to proper grade and alignment and as directed by the Departmental Officers |
| 20 | 110mm Dia HDPE (PN-6) |
| 21 | 225mm Dia HDPE (PN-6) |
| 22 | Jointing the following size of HDPE Pipes and Specials by butt fusionwelding / 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 Departmental Board Officers. |
| 23 | 110mm Dia HDPE (PN-6) |
| 24 | 225mm Dia HDPE (PN-6) |
| 25 | Testing the following size of HDPE Pipes with hydraulic testing equipment by filling with water (includin cost of water) and testing to recommended pressure in convenient stetchesand attending thebursts if any occured during the test, excluding the cost of pipes, including other incidential and operational charges etc., complete for the following diametres of pipes. |
| 26 | 110mm dia HDPE Pipes |
| 27 | 225mm dia HDPE Pipes |
| 28 | Construction of RCC valve chamber of following inner size with the following specifications. A base concrete should be PCC 1:4:8 mix using 40mm metal to a thickness of 10cm. The base slab of the chamber should be 15cm thick and the side walls should be 15cm thick on all sides and the cover slab should be 23cm thick. The grade of concrete should be RCC M30. Necessary earthwork should be done with enough space (atleast 15cm allround) for outer centering and fixing of 60cm x 60cm CI manhole cover with frame etc complete as directed by the engineers. |
| 29 | For Isolation & ScourSize: Inner Size : 0.80 x 1.00 x 1.20m |
| 30 | For air releaseSize: Inner Size : 0.70 x 0.90 x 1.20m |
| 31 | Replacement of Underground utilities (PVC Pipe) damaged during earthwork excavation for pipe laying works including cost of additionaleathwork excavation in all soil strata, including BT/CC road cutting, removl of slushy soil and replacing pipe line with sound pipe, including supply and delivery of PVC pipes, couplers, jointing materials and requiered specials, cutting, conveying, laying, jointing and cost of complete and as directd by the Departmental officers. |
| 32 | 15mm dia PVC Pipe (10 KSC) |
| 33 | 20mm dia PVC Pipe (10 KSC) |
| 34 | 63mm dia PVC Pipe (6 KSC) |
| 35 | 90mm dia PVC Pipe (6 KSC) |
| 36 | 110mm dia PVC Pipe (6 KSC) |
| 37 | 140mm dia PVC Pipe (6 KSC) |
| 38 | 160mm dia PVC Pipe (6 KSC) |
| 39 | Add GST @ 18% |
