level inverts Things To Know Before You Buy
The size from the soakaway needs to be at least 1m x 1m square x 1m deep under The underside from the incoming pipe. The stone infill need to surround the pipe and complete roughly 100mm higher than it. An impervious layer really should then be placed on the stone including thick polythene, tarpaulin, or perhaps a mattress of concrete (A1 in the di