320mm Chamber rise 175mm rise
- Oct 30, 2017
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320mm inspection chambers can be used as an alternative to traditional manholes up to depths of 600mm. Depths of less than 600mm can be achieved by cutting the chamber riser using a hard tipped hand-saw.
Circular lids are available for use in areas subject to light pedestrian usage when bedded in concrete. The use of plastic chambers is highly recommended over the traditional manholes made out of concrete and bricks. Plastic chambers provide a completely watertight and optimally functioning sewer. In the PolyDrain series a lot of attention has been given to operational aspects such as flow characteristics.