In response to Building Regulations that require inspection chambers to have removable non-ventilating covers, Polypipe Building Products has introduced a 450mm diameter manhole cover and frame which is strong and robust yet lightweight. The polypropylene cover can be secured with three screws, and has slots in the frame for a cable tie and clip. It is suitable for driveways where up to 35kN loading is permitted.
FOCUS ENQUIRY NO. 919