Directorate Of Municipal Administration Tender

code04 - Rafts, Below grade slab, Lift pits, water retaining structures with fully bonded High Density Polyethlene Membrane (HDPE) of 1.2mm composite thickness and having tensile strength of Greater Than 25 MPa (as per ASTM D 412), elongation of Greater Than 500% (as per ASTM D 412), puncture resistance of Greater Than 1000N (as per ASTM E 154), peel adhesion to concrete Greater Than 1200N/m (as per ASTM D 903),hydrostatic head resistance Greater Than 70m (as per ASTM D 5385). The system should be fully bonded to the RCC thereby conforming to IS 16471:2017 requirements of UG waterproofing structures. The membrane should be minimum 2.4m wide to reduce the number of joints with minimum 75mm factory made selvedge’s and comprising of an HDPE layer and a pressure sensitive adhesive layer which is covered by a weather proof protective and trafficable granular layer to protect self-adhesive polymer layer, etc, including surface preparation completely as per specificati. (PWD SR 2023-24 vol-2 P.no-150 I.no- 15.5)

code05 - 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 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. Using Screening Type A (13.2mm agg)(PWD SR 2023-24 vol-3 P.no-25 I.no- 4.13)

code06 - Laying of a geotextile filter between pitching and embankment slopes on which pitching is laid to prevent escape of the embankment material through the voids of the stone pitching/cement concrete blocks as well as to allow free movement of water without creating any uplift head on the pitching. (PWD SR 2023-24 vol-3 P.no- 129 I.no- 14.6)

code07 - Providing, laying and jointing HDPE pipes of specified grade and conforming to IS 4984-2016 with latest ammendments and conveying to work site including loading and unloading at both destinations and rolling and lowering into trenches, laying true to line and jointing of pipes and specials with electrofusion welding, giving hydraulic test as per relevant ISS with all lead and lifts including encasing the pipe alround to a depth of not less than 15 cms. with soft gravel or selected earth available from the excation, testing and commissioning. The rate is exclusive of required specials and fittings wherever necessary like saddle Tee, stub ends, flanged sets, bedns, reducers etc. complete (Contractor will make his own arrangements for procuring water for testing) etc. complete. NOTE: Upto 110mm dia Coil shall be used. For :HDPE PE 80 PN 6.0 200 mm dia(PWD SR 2023-24 vol-5 P.no-95 I.no- 9.1.9)

code08 - Providing, laying and jointing HDPE pipes of specified grade and conforming to IS 4984-2016 with latest ammendments and conveying to work site including loading and unloading at both destinations and rolling and lowering into trenches, laying true to line and jointing of pipes and specials with electrofusion welding, giving hydraulic test as per relevant ISS with all lead and lifts including encasing the pipe alround to a depth of not less than 15 cms. with soft gravel or selected earth available from the excation, testing and commissioning. The rate is exclusive of required specials and fittings wherever necessary like saddle Tee, stub ends, flanged sets, bedns, reducers etc. complete (Contractor will make his own arrangements for procuring water for testing) etc. complete. NOTE: Upto 110mm dia Coil shall be used. For :HDPE PE 80 PN 6.0 250 mm dia(PWD SR 2023-24 vol-5 P.no-95 I.no- 9.1.11)