Adding strength to a block wall

[johnspeehs]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

 

[idgni]

No such word as “can’t” everything is possible with equipment today,
Far superior especially in a tank, last thing you want is a leaking tank

 

[milkloss]

Use hollow blocks with rio and filled with concrete.

 

[milkloss]

 

[rob h]

Our grain store is 9inch hollow block with re bar in each course of motor then down every gap vertically.then filled with concrete

 

[Ffermer Bach]

remember, it will be fine when the tank is full, the wall will be under it highest pressure when the tank is empty and the wall is holding the soil bank back.

 

[matthew]

We did the above in a weeping wall slurry/manure store. It was fine, until it wasn't. Dumping manure into an almost full store, sent shock waves across the structure, and a lovely zig zag crack appeared.
We had to demolish and mass concrete fill it, which is something we should have done in the first place.

So it depends on usage, imo. If there will be 'shock waves' as it's filled, then eventually it will crack.
A steady fill with material which isn't giving this effect (as the grain store above) then the blocks plus re bar and filled solid is fine.

 

[upnortheast]

Incorperate pillars every 2 metres will give it considerably more strength

 

[Nearly]

@RWG Contracts

 

[yin ewe]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

Did a couple like that a few years ago but used 12" blocks for the walls. Haven't had any issues with them. Only 6ft deep but can't see 7ft being a problem.

 

[davidroberts30]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

concrete panels?

 

[Y Fan Wen]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

I suppose the block wall is the shuttering?

 

[egbert]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

drop some mesh in before you pour...

 

[Mouser]

If it's not already dug out just dig a 7ft deep foundation and fill concrete into that. Dig centre out afterwards and pour floor. Never seen it done myself but heard of plenty who done it.

 

[fiatf130]

There's hundreds of slurry tanks in northern Ireland built from blocks over the years with no problems. Just not allowed anymore due to stupid regulations.

 

[Whitepeak]

I'm guessing my cousins idea of building a block wall with no mortar, filling the blocks with concrete, rendering and then backfilling on build up ground is a no go then...

 

[multi power]

Ok, So if I build a tank 48ft long and 13 ft wide and 7 ft deep with 9" blocks would pouring say 6" of concrete between the wall and the earth sides add any strength to the tank? its in good clay ground. Before any one asks it cant be shuttered hence why I'm asking.

Is a 9 inch wall with 2 good coats of plaster not strong enough?

 

[fiatf130]

Is a 9 inch wall with 2 good coats of plaster not strong enough?

Of course it is.

 

[yin ewe]

If it's not already dug out just dig a 7ft deep foundation and fill concrete into that. Dig centre out afterwards and pour floor. Never seen it done myself but heard of plenty who done it.

Fitted slats on quite a few done like that over the years, one was 12ft deep, very hairy sitting in a 3 ton forklift in the bottom of it. Cheap way of shuttering a tank if the ground is suitable.

 

[Charolais cattle]

Tank years ago that was built around ere,, was with 18" wall,, 2x 9" blocks, and plaster inside,, very unlikely any more,,all shuttered now,, it's never the clay that cracks,,the walls,, its usually pressure of water,, that cant get away,,