Sectional manholes

Sectional manholes

Sometimes manholes are deep and at other times shallow. Sometimes ducting will need to pass through the manhole and there will be cable in some of the tubes. And it cannot be cut to be threaded into and through the ends of the manhole. Out in the excavation (replace excavation with field) there is someone who must put the manhole into place. It is in such situations that all the advantages of sectional manholes become apparent.

Ralaflex
These sturdy sections made of fibreglass-reinforced plastic are light coloured, lightweight and uncomplicated. They can quickly be assembled to form the body of a manhole, and in most cases the work can be done by one person.
The light colour of the sections makes the inside of the manhole brighter and so easier to see what is happening once inside it.
Each section is 150 mm which allows a manhole body to be quickly built up. Where there is a need to adjust surface height, despite careful levelling of the bottom, it is possible to add one or two TP sections of the same size to give an adjustment in steps of 25 mm.
With a cast iron cover these are suitable for driving over, i.e. up to 400 kN. However, where the manhole is being sited in heavier traffic or a on a busy road, please contact Rala for further advice.

Ralaflex Light
This is the latest addition to Rala’s popular, simple and cost-effective manhole range. A very light manhole that is easy to make holes in. The cover is made of reinforced plastic, has anti-slip protection and fits neatly into the frame. Ideal where extra emphasis is being placed on a neat end result. (Replace B125 with 125kN (B125) as in B128)
Designed solely for footpaths, pavements and environments that are only lightly or infrequently used. Available in B125 load class. The covers are lockable.