Supplying Laying Jointing Constructing Testing and Commissioning of Sewerage Networks House Service Connections and Sewage Pump Stations in Bhagat Singh Colony Haripur Kalan Dehradun

Excavation in soil mixed with murrum, shingle, kankar, boulder excluding dewatering requiring use of specials Tools & Plants, if required.

0.0 m to 1.5 m below GL

1.5 m to 3.0 m below GL

0.0 m to 1.5 m below GL

1.5 m to 3.0 m below GL

Excavation in soil mixed with murrum, shingle, kankar and boulder, including dewatering requiring use of specials Tools & Plants, if required

0.0 m to 1.5 m below GL

1.5 m to 3.0 m below GL

0.0 m to 1.5 m below GL

1.5 m to 3.0 m below GL

Provide & fixing of Open Timbering (covering 1/3rd of surface area by planks), in trenches for the following depths below ground level consisting of 40 mm thick approved country wood planks for poling board, 125 mm × 75 mm Indian country wood walers and 100 mm dia wooden ballies for struts at 1.50 m c/c interval including removal after laying of sewer both sides of trenches will be taken as one side for the purpose of payments & measurements i.e. area equals to length x depth of trenches. Dismantled timbering materials will be the property of the contractor.

Depth up to 3.0 m below GL.

Depth up to 3.0 m below GL.

Extra for planking and strutting in close timbering, if required, to be left permanently in position. (face area of the timber permanently left to be measured) (N.B.: While allowing payment for retaining shoring, no payment for providing shoring shall be made.)

200 mm dia pipe

150 mm dia pipe

200 mm dia pipe

0.0 to 1.5 m depth

beyond 1.5 to 3.0 m depth

Type- A : 900 mm dia 2.00 m depth

Deductions which concern Items under Sr no. 24.0, per meter for decrease (-) of height on standard depth of following sizes of manholes including supply of all materials, labour, Tools & Plants etc. Required for proper completion of work. Following Items shall be considered as Negative and shall be deducted accordingly. (Note: The Employer shall consider these Deductions during Evaluation of Bids for determining of lowest Bid.)

Type- A : 900 mm dia 2.00 m depth

Type- B : 1200 mm dia 2.50 m depth

Type- C : 1500 mm dia 3.50 m depth

Construction of approved Cast-in-situ RCC manhole chambers, constructed using form vibrators of standard type, with barricading, danger lighting and using of sight rails and boning rods wherever necessary, dewatering if required, shoring and strutting wherever required using RCC M30 Grade of Concrete, Conforming to IS 456:2000, with 20 mm and down graded stone chips, well graded sand and reinforcement shall be Fe500 conforming to IS 1786:2008, 250 mm thick top concrete slab, having wall thickness and raft thickness as in approved drawings and with an offset in raft all around the chamber as in approved drawing, benching concrete with 1:12 slope towards the central drain finished smooth, including fixing and grouting of pipes, including conveying to work spot supply and fixing EHD-35 Precast Concrete Manhole Cover & Frame, on a bed of PCC 1:2:4 supplying and fixing of minimum 6 mm thick encapsulated plastic footsteps (as per IS 10910) on 12 mm dia. Grade Fe500 steel bar (as per IS 1786) staggered at 300 mm apart as detailed in the Specification, disposal of surplus earth, watering, curing, engraving manhole number with flow direction on the inner cylindrical surface etc., complete including including excavation for installation of pre-cast manhole at site, cost of reinforcement steel and fabrication charges and also cost and conveyance of all materials, labour with all lead and lifts. The Cast-in-situ RCC manholes are for various diameters and depths as stated below and as per detailed drawings, specifications and direction of the Engineer.

Supplying, fitting and fixing in position reinforcement with Thermo-Mechanically Treated-TMT bars conforming to relevant IS Code for RCC work including straightening, cleaning, cutting and bending to proper shapes and length as per details, supplying and binding with 20G annealed black wire and placing in position with proper blocks, supports, chairs, spacers etc. complete. Grade Fe500 or more

Providing House Service Connection including excavation, supply, carting, laying & jointing of 110 mm dia (OD) uPVC pipes, of (Stiffness class SN 8) as per IS 15328:2003, ISI marked and as per specifications with rubber ring with socket and spigot joints, (EPDM/SBR) as per IS 5382:1985 including cost of rubber gaskets, lubricants etc., including dismentling/demolishing of all types of floors, slabs, walls, ramps and restate the same in previous condition after the connection work, cleaning of site and disposal of surplus material upto 5 km. All works should be completed in all respect as per specifications and as directed by the Engineer.

Water Bound Macadam Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density. By Manual Means

Grading- I (1st Layer), Using Screening Type-A (13.2 mm Agg.)

Grading- II (2nd Layer), Using Screening Type-A (13.2 mm Agg.)