VME’s Precast Manhole Chambers are cast on monolithic moulds, thus making it water tight. Sizes available are 600 x 600mm to 1500 x 1500mm & Covers for the manhole will also be suppled based on the load coming on the manhole.
Construction of Chambers below ground level in conventional method is a very tedious activity, as the size of the chambers are very narrow and very less space available to work. More over sealing the construction joints against water leaks will also be a challenging one.
Structural design of the Manhole Chambers are in accordance to:
BS 5400 : Part 4 : 1990 | BD 31/01 | MS 1293 : Part 1 : 1992
IRC 6 – 2000 Cl 126.96.36.199 | IS 456 : 2000 | IS 12592: 2002
All of these problems can be eliminated in precast system, where the chamber is monolithically cast until 2m from the bottom most point. Chambers having a depth of more than 2m will have only one joint and the joints will be in multiple heights of 2m. For a depth of 3m, the joint will be made in the factory and then transported. The joints will be well treated and then sealed with Polyurethane sealant.