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laying concrete slab for shed base butting up to garden wall

Discussion in 'Building' started by matz, 24 Sep 2012.

  1. matz

    matz

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    I'm thinking putting up a 20' x 10' concrete sectional building in my garden sitting on 4" concrete which will sit on 4" compacted hardcore.

    Couple of questions if anyone can help

    1) can I butt the concrete slab up against and over the top of the boundray wall foundations ( I want the building as close to the wall as possible) Boundray wall is approx 5 foot high of single red brick construction.

    2) Can I run the concrete slab to within 12" of a sewer manhole cover which is in the garden also? The sewer pipes are about 2' down maybe more and wont run beneath the slab.

    many thanks...
     
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  3. noseall

    noseall

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    1) Yes, but there is a slight risk of differential shear crack. Prepare the base well.

    2) Yes.
     
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