Square inspection pits
DWTN offers standard inspection chambers in self-compacting concrete. Connections for concrete pipes are made with slip joints. Stoneware, plastic, and cast iron pipes can also be easily connected. Our standard range of square chambersincludes the following sizes: 80x80cm, 100x100cm, 125x125cm, and 150x150cm. We can also offer custom-made chambers for all other sizes (e.g., 175x175cm, 200x200cm, rectangular chambers, etc.). To extend the inspection chamber to ground level, we offer intermediate pieces, cover plates, and spacers.
The inspection chambers are manufactured to CEM I 52.5 SR3-LA standards and are BENOR and NL BSB certified. This makes them suitable for both the Belgian and Dutch markets.
These manholes are perfectly separated as cable pull-in manholes, but also, of course, as sewer manholes when the pipes are connected at right angles. The manholes are filled monolithically, and in sizes 125x125 and 150x150, they can even be built as a single unit up to a height of 3 meters. Ideal for use as a pumping station.