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Thread ID: 124374 2012-04-23 06:19:00 Concrete block water tank. pine-o-cleen (2955) PC World Chat
Post ID Timestamp Content User
1271325 2012-04-23 06:19:00 So...


I'm thinking about building a water tank to supply my pool with water over the summer, and maybe water the garden too. At the side of my pool is a weird concrete block structure that is 1 wall away from being a tank. See here:

www.imagef1.net.nz

So, my idea is to build a wall, seal the blocks and supply water to it from a nearby drainpipe (using a diverter).

Like so...

www.imagef1.net.nz

Now, I've never constructed a concrete wall before, let alone one that would have to handle a crapload of weight and be sealed to hold the water in. So my question is, is this feasible? Would I (an amateur) be able to build a wall that could withstand the sort of pressure we are talking here? Is it easy enough to seal? What happens if the dog doesn't move, will he drown in there? :P

Hopefully there is a blocklayer / water tank person out there that can help me answer these questions.
pine-o-cleen (2955)
1271326 2012-04-23 06:23:00 Just went and measured up, it's 1870mm h x 2440mm w x 1400mm d. pine-o-cleen (2955)
1271327 2012-04-23 07:22:00 Should be possible, what I can think of for starters is the wall thats currently there going to topple over with pressure / Weight of water, is it reinforced -- Doesn't look like it by the way the first Pic shows the back wall coming adrift ? Most water tanks I've come across are round.

I think sealing the whole lot could be a challenge considering its all blocks, maybe some sort of membrane will be the answer ?.

As for the dog -- He'll move or learn to swim real fast :p
wainuitech (129)
1271328 2012-04-23 08:00:00 Thats slightly more then one wall away from being a tank, its closer to being a pile of rubble.

Not only is it poorly built but the slab is sinking, hence the opening, Though its ability to split apart is enhanced greatly by its incredibly poor design.

If it were me I'd be looking at a new plan, and seeking professional advice.

I'd paint it green, hang some plants on it, and put in a garden on the lower slab.
Metla (12)
1271329 2012-04-23 08:08:00 So...


I'm thinking about building a water tank to supply my pool with water over the summer, and maybe water the garden too. .
You don't need to supply a pool, once it's full you don't empty them.
Top is minimal.

As for the garden, get a plastic tank and run the washing machine water into it and the spouting.
pctek (84)
1271330 2012-04-23 08:50:00 ...
I'd paint it green, hang some plants on it, and put in a garden on the lower slab.

Or put a roof on and turn it into a man cave?
pine-o-cleen (2955)
1271331 2012-04-23 08:51:00 Looking at the photos I would say dont even go there with the idea! Several reasons and the obvious has already been pointed out to you. For one thing the dimensions you gave give a cubic volume of 6300 litres approx when full which may well be more weight than the structure you want to build into can support. coldfront (15814)
1271332 2012-04-23 08:52:00 Yeah, I'm thinking a plastic tank would be the way to go. Thanks guys, but in future, encourage me to go ahead with these sorts of projects and the results will be far more entertaining. :D pine-o-cleen (2955)
1271333 2012-04-23 08:56:00 I wouldn't trust that wall as far as I could kick it. You would need to rebuild the whole thing.
To add to pctech you can also get bladders which if your house is on piles you can put there.
mikebartnz (21)
1271334 2012-04-23 09:51:00 Didn't we have a saga on a certain water tank a couple of years ago? Make sure the new one has big air vents. :D :D BobM (1138)
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