Hello everyone,
The excavation for a pool is currently underway. The pool will be built with 17.5cm (7 inches) formwork blocks. One long side and one short side of the pool are buried up to the top edge in the ground, while the other two walls extend about two-thirds above the ground.
I will not pour a full concrete slab but will pour the base slab inside the pool later once the walls are in place.
Do I need to create a reinforced concrete foundation with rebar and rebar connections on top of my gravel bed for the exterior walls and then set the blocks on that, or would it be sufficient to set the first row of formwork blocks directly on the gravel bed in concrete and then reinforce the blocks accordingly?
Is there a structural difference in this case between having a foundation or not? I assume it should hold against the pressure, but what is the difference between having a foundation to build on or setting the first block row directly in concrete?
Thanks for your answers.
The excavation for a pool is currently underway. The pool will be built with 17.5cm (7 inches) formwork blocks. One long side and one short side of the pool are buried up to the top edge in the ground, while the other two walls extend about two-thirds above the ground.
I will not pour a full concrete slab but will pour the base slab inside the pool later once the walls are in place.
Do I need to create a reinforced concrete foundation with rebar and rebar connections on top of my gravel bed for the exterior walls and then set the blocks on that, or would it be sufficient to set the first row of formwork blocks directly on the gravel bed in concrete and then reinforce the blocks accordingly?
Is there a structural difference in this case between having a foundation or not? I assume it should hold against the pressure, but what is the difference between having a foundation to build on or setting the first block row directly in concrete?
Thanks for your answers.
K
knalltüte26 May 2020 11:58abc12345 schrieb:
@Steven
According to the load specifications from the manufacturer, the 17.5 cm (7 inches) blocks are sufficient for use under live loads.And does the block manufacturer know that you want to build a pool with them?
I don’t think "live load" is a standard profile for that.
In fact, I am also active in another forum for pools/ponds, and there the DIY builders do not follow a uniform approach.
10 pools, 10 different construction methods. Sometimes with a 30cm (12 inches) foundation, sometimes without, 17.5cm (7 inches) blocks, 25cm (10 inches) blocks, sealed from the outside like a basement... or not at all.
That’s why I thought I’d ask around here as well, since I have often received good help here, and now everything is different again.
10 pools, 10 different construction methods. Sometimes with a 30cm (12 inches) foundation, sometimes without, 17.5cm (7 inches) blocks, 25cm (10 inches) blocks, sealed from the outside like a basement... or not at all.
That’s why I thought I’d ask around here as well, since I have often received good help here, and now everything is different again.
K
knalltüte26 May 2020 12:15Well, ask 10 doctors for their opinion and you’ll get 14 different answers. That’s life.
Pick out the mostly consistent answers that seem "reliable," mix them with common sense, and then just add a safety margin of about xx%. That should do the trick.
Pick out the mostly consistent answers that seem "reliable," mix them with common sense, and then just add a safety margin of about xx%. That should do the trick.
In all the responses, there are pictures that look great and apparently work well... Durability is the key issue here, but we’d be back to guessing unless I build a solid bunker as a foundation.
My problem is that I plan everything ten times over and want to be absolutely sure, but on the other hand, I also have to consider the budget.
I’m now simply installing a reinforced concrete ring beam with reinforcement and connecting rebar using my 17.5cm (7-inch) blocks, and I hope to enjoy it for a very long time.
Thanks for your input.
My problem is that I plan everything ten times over and want to be absolutely sure, but on the other hand, I also have to consider the budget.
I’m now simply installing a reinforced concrete ring beam with reinforcement and connecting rebar using my 17.5cm (7-inch) blocks, and I hope to enjoy it for a very long time.
Thanks for your input.
Vicky Pedia26 May 2020 12:57HilfeHilfe schrieb:
How large is the pool going to be?
6 by 6 meters (20 by 20 feet)? That would put a lot of pressure on the walls.The pressure depends solely on the filling height!H
HilfeHilfe26 May 2020 13:00Vicky Pedia schrieb:
The pressure depends solely on the fill height!Yes, exactly!Do you really think 2 meters (6.5 feet) of water will go in there?!
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