“All buildings have drainage from the roof, which catches the rainwater, brings it down a down pipe, and then generally speaking goes underground into a soakaway.
Older-style soakaways tended to have been rubble or brick rubble filled. More modern systems tend to be a crate or a concrete ring soakaway. And the idea is that when it rains, there’s a location underground, which the rain water can be sent to be dispersed at a controlled rate.
Otherwise, you’ll just end up with water flowing around the property, which can lead to all sorts of issues.”