Tue, 19 Dec 2023 08:38:31 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300333#Comment_300333 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300333#Comment_300333 Sat, 18 Feb 2023 13:00:52 +0000 Rex
This is just an 'out of interest' question.

On one of our walking routes, along an expensive road, one house is installing an Enduramaxx 10,000 Litre Rainwater Tank that stands around 3.7m tall.

I was chatting with the groundworker and was told that it will be in the back garden, set onto a solid base and will be set into the ground by around one meter. That leaves around 2.7m above ground. The water inlet will be from the bottom of the tank.

Since water finds its own level, when the tank is full, I assume that water in the downpipes attached to the house will be full of water to around 2m + high. In my mind, this does not make much sense or am I missing a fundamental principle?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300336#Comment_300336 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300336#Comment_300336 Sat, 18 Feb 2023 13:35:17 +0000 marktime http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300337#Comment_300337 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300337#Comment_300337 Sat, 18 Feb 2023 14:11:23 +0000 Rex
It is not up and running yet but I will see what is happening on future wanderings.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300338#Comment_300338 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300338#Comment_300338 Sat, 18 Feb 2023 15:31:30 +0000 Gareth J http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300340#Comment_300340 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300340#Comment_300340 Sat, 18 Feb 2023 15:48:32 +0000 djh http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300341#Comment_300341 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300341#Comment_300341 Sat, 18 Feb 2023 16:33:27 +0000 WillInAberdeen
IE it should be possible to have the downpipes full, if the joints are sealed.

Maybe they are planning to have a diverter fitting in the downpipe like you get for water butt, with a narrow water-filled pressurised pipe running underground and up into the tank, and a wide air-filled downpipe that carries excess rainwater and debris away down to a gully.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300389#Comment_300389 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300389#Comment_300389 Wed, 22 Feb 2023 11:05:53 +0000 Cliff Pope
The main requirement is that when it rains we want the full output from the gutters to fill the tanks. The water butt small pipe attachment is totally inadequate and fails to trap all the available precious water.
Conversely once the tanks are full we want all the water diverted straight down the drains - otherwise the tanks would quickly and unnecessarily fill up with the winter's leaves and debris.

I haven't so far been able to devise a way of doing this automatically. The simplest is just to have a section of convoluted pipe just above tank level and manually move the downpipe outlet from pipe A to tank to pipe B to drains.

I can't see any purpose in feeding in water at the bottom - it's not a hot tank, so the effects of thermal layering are not relevant. Also it would needlessly stir up sediment. The exit pipe is taken from about 6" above the bottom, to avoid drawing in sediment.

Once in a long long while we drain the tanks and tip them on their sides to flush and clean them out. In theory I could get through the screw lid on top, but the claustrophobia would be terrifying. For this reason the tanks are not buried, but hidden by shrubs and climbing plants.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300392#Comment_300392 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300392#Comment_300392 Wed, 22 Feb 2023 13:03:21 +0000 owlman Posted By: Cliff Pope...............

I haven't so far been able to devise a way of doing this automatically. The simplest is just to have a section of convoluted pipe just above tank level and manually move the downpipe outlet from pipe A to tank to pipe B to drains.





Float operated shut off valve?

https://www.directwatertanks.co.uk/parts-consumables/float-valves]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300397#Comment_300397 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17744&Focus=300397#Comment_300397 Wed, 22 Feb 2023 16:55:00 +0000 Cliff Pope