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  1. #1
    Senior Member Rank = Mature Champion Ant62's Avatar
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    Big concrete blocks

    As anybody used these for the below ground block build..

    https://www.buildbase.co.uk/cemex-so...010511-2801020



  2. #2
    Senior Member Rank = Grand Champion andikoi's Avatar
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    think theyre also called foundation blocks ant,my brother in law built his whole pond out of them,damm heavy though,was like 2 normal dense ones,but suppose you have half the work laying,just twice the weight humping lol,andi

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  4. #3
    Senior Member Rank = Mature Champion Ant62's Avatar
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    How did he find working with them Andi.....
    I bet they where a b1tch to cut....

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    Senior Member Rank = Grand Champion andikoi's Avatar
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    he didnt cut any mate,he made pond to size that blocks went to haha,andi

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    Senior Member Rank = Mature Champion Ant62's Avatar
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    Yep that is what i intend to do....
    Last edited by Ant62; 18-03-2018 at 04:04 PM.

  9. #6
    no reason you cant use them but they are expensive at over 3 quid each, 4 inch concrete blocks i get for under a quid each

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  11. #7
    Senior Member Rank = Mature Champion Ant62's Avatar
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    They are a lot bigger in size than your normal blocks and heavier but it will take less in the build..
    Where as your typical block is 100mm wide on its side these are 215mm....

  12. #8
    Moderator Rank = Supreme Champion Feline's Avatar
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    Quote Originally Posted by Ant62 View Post
    They are a lot bigger in size than your normal blocks and heavier but it will take less in the build..
    Where as your typical block is 100mm wide on its side these are 215mm....
    Familyman is right (as you would expect him to be as a builder).
    Foundation blocks are twice the size (taking into account the 15mm mortar course that would be between two standard blocks), but they are more than twice the price. This means it will cost you more for any given length of wall of the same height and width.

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  14. #9
    I’m building mine out of trenchblocks, they go up mega quick. Spend a bit more on materials but that’s cheaper than labour. My builder whipped my house extension up to dpc in a couple of days and that was massive compared to the average pond.
    They cut ok with a disc cutter thing.

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  16. #10
    As a bricky who lays these bloody heavy things day in day out and who has also built a fair few ponds i would always lay the blocks flat anyway for strength. So you may as well use 100mm blocks as they are a bit lighter and easier to handle. They can easily be cut with a lump hammer and 4" bolster. If you go direct to a builders merchant you should be able to get 100mm for less than a £1 and 140mm for about £1.30. Save you back though and use 100mm flat

    Lee

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