MANHOLES ACCORDING TO CUSTOMER DESIGN

MANHOLES ACCORDING TO CUSTOMER DESIGN

Manholes created from pipes are made from Ecopal corrugated or smooth polyethylene pipes that are cut and welded together.
Manholes can be made with a channelled base if a pipe runs through it, or with a flat base if it does not. In the former, the insertion of fins inside the manhole containing polyethylene sheets inclined at 8° to the horizontal is required.
The base of the manhole consists of a polyethylene sheet of a suitable thickness welded to the inside wall of the manhole.
In the case of custom-made manholes, no restrictions are imposed on the diameter of inlet/outlet pipes and manholes of any type may be constructed according to designer’s requirements (e.g. L-shaped manholes, jump manholes, or manholes with multiple inlets).
Ends of manholes with ND/OD 800 – 1000 – 1200 risers can be created using a PEMD conical reduction adaptor, obtained by rotomoulding and coupled onto the extension, which is used to reduce manholes up to a crawl space diameter of 600 mm.
A ladder, consisting of polyethylene uprights and polyethylene-coated steel steps, may also be welded onto the inside wall of ND/OD 1000 – 1200 risers.

MANHOLES ACCORDING TO CUSTOMER DESIGN Disegno tecnico