A/R M/O water supply under Sub Division No.I, NACD, APWD, Mayabunder during 2025-26.SW-Replacement of filter media at water treatment plant, Karmatang-IX.

Supplying and stacking at site.

63 mm to 45 mm size stone aggregate

53 mm to 22.4 mm size stone aggregate

Stone screening 11.2 mm nominal size (Type B)

Supplying and stacking of mainland river sand (granular type) for filtermedia of slow sand filter bed with effective size of sand 0.20mm to 0.50mm with uniformity co-efficient of 1.50mm, including all transportation from mainland to Lucknow treatment plant and stacking the materials at site complete as per the direction of EIC.

Laying of stone aggregates of different sizes under filter bed in layers including ramming consolidation and dressing etc. complete as directed by EIC etc. complete.

63mm to 45mm size stone aggregate

53mm to 22.4mm size stone aggregate

Stone screening 11.2mm nominal size (Type-B)

River Sand

Removal of stone aggregates of various sizes and sand from the filter bed including lift upto 3.00mtr and stacking on open yard with a lead of 50mtr as directed by EIC.

Cleaning the filter bed inner source including removing the deposited silt and removing dirt etc. including washing the surface with the help of required scrubbers and also cleaning with sedimentation tank & clorination chamber where ever required, without causing any scratching/damage to the filter bed structure and finally washing the surface with clean water with the help of pressure jet machine all complete as per the direction of EIC. (The rate inclusive of all materials, labours & scaffolding involved including lead and lift).

Please Enable Macros to View BoQ information