Manhole Information

The Done Manhole is manufactured with high strength reinforced concrete.

The fall through the manhole form inlet to outlet varies from 20mm to 100mm.  The straight channel has a fall of 20mm to 60mm, with the 90 & 40 degree channels having between 60mm and 100mm.  The manhole, at this stage, is suited for those angles and Sherriff Drainage is working on new moulds that will cater for different pipe angles coming into the manhole.  The manhole can also be supplied with just the soft spots so the contractor can use which ever is needed.

It is ideally suited for new sub-division work, any high water table areas(because of the manhole having no infiltration when supplied with pipes), cutting into existing lines and some retro fits. 

If the Done Manhole is going to be supplied with the required pipes for the job, Sherriff Drainage needs a copy of the plan and manhole coordinates.