PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Chapter 24
Technical Specification for laying of Clear Water Rising Main
24.1 Introduction.
The clear water rising main shall consists of 300mm dia. DI pipes for a total length
of 6570Rm. Water from the RCC clear water sump shall be pumped through a
300mm dia. DI pipes to the proposed storage reservoir under Zone XII.
24.2 Scope of work.
Scope of work includes survey, layout, design, engineering and laying of clear
water rising main of sizes 300mm for a total length 6570Rm from clear water
pump house to the proposed storage reservoirs under zone XII. In laying of clear
water rising main, DI pipes including all specials and fittings like bends, flanges,
sluice valves, Air valves, tyton joints, rubber gasket, etc. and other accessories
including Non-return valves and expansion joints shall be supplied by the
department. Providing pipe supports and anchor block wherever is necessary is
within the scope of the tender.
Detailed design and drawings clearly showing the plan and L-Section of the clear
water rising main indicating the location of valves, air valves and anchor block etc.
including structural drawings of anchor block, valve chamber are required to be
submitted. The work can be started only after the approval of the design & drawing
by the engineer-in-charge.
Taking delivery and transportation of pipes, valves, which are issued as per
free issue of materials from the PHED Store at Mawphlang transporting them
to work site and custody of the same till completion of erection and
commissioning. The Contractor shall be responsible for proper accounting of these
material and return the surplus material if any to PHED stores as per direction of
Engineer-in-charge.
DTS : Detailed Tender Specification. Page 279