WWilts Posted April 17, 2022 Share Posted April 17, 2022 New build in progress Rainwater downpipe -> bottle gulley -> ~6m land drain (occasional cars or light vans driving over) with ballast bench & cover What material for land drain? What to use over that to protect from weight of vehicles? (details welcome, novice here) Link to comment Share on other sites More sharing options...
Conor Posted April 17, 2022 Share Posted April 17, 2022 What's the cover from the pipe to surface? Normally you'd backfill with lean mix concrete if cover is 400mm or less. Is this a perforated or solid pipe? Twinwall is pretty damn near indestructible. I stuck the digger bucket in to a section the other day and it survived. Nice and bendy, PVC shatters. 1 Link to comment Share on other sites More sharing options...
WWilts Posted April 18, 2022 Author Share Posted April 18, 2022 22 hours ago, Conor said: What's the cover from the pipe to surface? Normally you'd backfill with lean mix concrete if cover is 400mm or less. Is this a perforated or solid pipe? Twinwall is pretty damn near indestructible Less than 400mm cover from pipe to surface. Perforated pipe. Leaning towards twinwall. Lean mix backfill over seems a good idea Link to comment Share on other sites More sharing options...
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