NIT No. 02/EE(C)Dr.-X/2021-2

Amount

Provide worksite protection by 2m high barricades etc, as approve by the Engineer and supply and maintenance of all general safety equipment's and confined space entry safety equipment's including multi gas meter etc for the use by Contractor's personnel and the staff of Engineer/Consultant. An ambulance for any emergency shall be made available on demand on site at all times.

Corridor survey to determine sewer alignment including locating MH/Chamber, tracing, uncovering of buried manholes, proximity of structure, measurement of exact length centre to centre MH/Chamber, taking Ground Levels, invert levels(after de-silting) & Geotechnical Investigation in the vicinity of sewer route. Submission of AO size indicating GIS Coordinates of all manholes in total 7 sets.

Online Pipe Insection & Acoustic Profiling of Trunk Sewer pipe line (900 mm to 2000 mm dia) in Delhi in Running condition without stopage of flow using robotic marine trekker platform for the purpose of silt-level estimation including mobilaation of equipment,reparation of eloctronic report and submission in 3 sets of DVDs.

Plugging of the existing sewer line manhole with 2 nos MS Sheet 6 mm thick angle iron frame and braces shutters to be shutted with wooden struts and filling the manhole with empty cement (PVC) bags filled up with earth up to suitable depth to avoid leakage the sewerage on the u/s side to be pumped with suitable nos & capacity of pumps, till the work is completed so as to keep reduce the pressure to the required extent to the plugged Manhole. Necessary arrangement to be made for pumping for any leakage noticed in the manhole or to replug in the case of heavy leakages. the Steel shutters and the eart filled PVC cement bags shall be removed after the completion of work and then the manhole shall be desilted

900 mm dia Sewer line

1000 mm dia Sewer line

1100 mm dia Sewer line

1200 mm dia Sewer line

1400 mm dia Sewer line

1700 mm Dia Sewer line (rate average of 1600mm and 1800mm dia)

Loosen desilt and thoroughly clean and remove debris and objects such as boulders, bricks etc, bacteriological slimes/ roots, encrustations grease, carbonated deposites, etc from the sewer lines including disposal of silt/debris/ malba/ objects etc from sewer line including disposal of silt /debris/malba/obects etc. to dumping sites as per the directions of the engineer in charge, within the Delhi NCT area

1000 mm Dia Sewer line

1100 mm Dia Sewer line

1200 mm Dia Sewer line

1400 mm Dia Sewer line

1700 mm Dia Sewer line (rate average of 1600mm and 1800mm dia)

2000 mm Dia Sewer line

Cutting of bitumen road and making good the subgrade and restoration of road with 150 mm thick cement concrete 1:2:4 (1 Cement:2 Coarse Sand:4 Graded stone aggregate 40 mm nominal size)

Raising of Manholes to required level by demolishing/ reconstructing of taper portion and restoration of road/ground surface to original condition as directed by the Engineer -in -Charge.

Manhole of dia 1520 mm

Manhole of dia 1830 mm

Manhole of dia 2130 mm

Supply and stacking at site precast concrete manhole cover with steel fibre of ISI mark conforming to IS.12592 part I of EHD35 with matching frame of class EHD - 35 IS 12592 part II with 875 mm external dia and clear 560mm internal dia. Extra Heavy Duty (EHD-35)

Fixing of SFRC manhole covered and frame,560mm dia EHD-35

Providing orange colour safety foot rest of minimum 6 mm thick plastic encapsulated as per IS : 10910, on 12 mm dia steel bar conforming to IS: 1786, having minimum cross section as 23 mmx25 mm and over all minimum length 263 mm and width as 165 mm with minimum 112 mm space between protruded legs having 2 mm tread on top surface by ribbing or chequering besides necessary and adequate anchoring projections on tail length on 138 mm as per standard drawing and suitable to with stand the bend test and chemical resistance test as per specifications and having manufacture’s permanent identification mark to be visible even after fixing, including fixing in manholes with 30x20x15 cm cement concrete block 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) complete as per design.

METRRO WASTE HANDLING PVT. LTD.