Astro turf What needs to be done

You would have to construct a soak away with hardcore and sand underneath were you want the Astro to go. Thank you 😊

Also to add to the above. Use a hardcore base and sand both compacted and the sand screeded level plus i use a timber frame round the hard-core. One to retain all materials and secondly something to secure your astro turf to.

Recommend you put a channel around the edges of the area at around 45 degrees for drainage put a weed membrane over the lapping the edges by 30mm then use sharp sand or granite dust make sure you slightly raise it in the middle so you have run off towards the edges wet the area and use a wacker plate to compact the area the lay the artificial grass on ylthat