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Replacing Patio With Concrete

  • 06-06-2014 12:49pm
    #1
    Dad11
    Registered Users Posts: 274 ✭✭


    Hi all,

    I am replacing my patio with concrete so I have to take up paving stones dig down maybe 8 inches below 10 inches below garden level then set foundation and pour concrete to bring back up to level of the garden. I understand when ordering concrete you order it in cublic metres. With this in mind I have measured the area I want to cover with concrete. The length of the area is 27 feet long X 8 metres wide with a depth of 5 inches. How do I convert this to cublic metres ?
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Comments

  • #2
    vicwatson
    Registered Users Posts: 28,403 ✭✭✭✭vicwatson


    Dad11 wrote: »
    Hi all,

    I am replacing my patio with concrete so I have to take up paving stones dig down maybe 8 inches below 10 inches below garden level then set foundation and pour concrete to bring back up to level of the garden. I understand when ordering concrete you order it in cublic metres. With this in mind I have measured the area I want to cover with concrete. The length of the area is 27 feet long X 8 metres wide with a depth of 5 inches. How do I convert this to cublic metres ?


    Put it all to Metres -

    1. 27' = 8.23 M (823 CM)
    2. 8m = 8 M (800 CM)
    3. 5" = 0.13 M (factually 12.7 CM or to round up = 13 CM)

    So 1 x 2 x 3 = 8.23 x 8 x 0.13 = 8.5592 Cubic Metres (or 9 Cubic Metres)

    Think that's right.


  • #3
    Kevwoody
    Registered Users Posts: 1,015 ✭✭✭Kevwoody


    That's a big depth of concrete!
    Do you really need it 5" deep? If it's replacing a patio I assume there will only be pedestrian traffic on it?


  • #4
    Dad11
    Registered Users Posts: 274 ✭✭Dad11


    yeah pedestrian traffic only. However I have measured the depth of the pathway the joins up the patio which is at the garden level and the depth of this is 5 inches.


  • #5
    Masala
    Registered Users Posts: 3,462 ✭✭✭Masala


    Make sure you leave for expansion.....

    I got that 'stamped-effect' concrete laid a few years ago (where they pour the concrete down and then give me a slab-effect on the surfaces using rubber-templates)

    Now see a few cracks running from one side. Have to live with it... not end of the world!


  • #6
    Tefral
    Registered Users Posts: 4,310 ✭✭✭Tefral


    Dad11 wrote: »
    yeah pedestrian traffic only. However I have measured the depth of the pathway the joins up the patio which is at the garden level and the depth of this is 5 inches.

    Use 5-10mm chip to bring up the levels. 125mm thick concrete is overkill for a patio and an unnecessary expense.


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  • #7
    Kevwoody
    Registered Users Posts: 1,015 ✭✭✭Kevwoody


    Dad11 wrote: »
    yeah pedestrian traffic only. However I have measured the depth of the pathway the joins up the patio which is at the garden level and the depth of this is 5 inches.


    It might be 5" at the edge but it's unlikely it's that depth further in.
    The ground was probably sloped back from the edge board when the concrete was poured to allow an even finish on the edge.


  • #8
    GreeBo
    Registered Users Posts: 27,007 ✭✭✭✭GreeBo


    As above leave expansion gaps and also pour in multiple slabs, to avoid cracking.


  • #9
    Dad11
    Registered Users Posts: 274 ✭✭Dad11


    This is the area I want to rip up and replace with just concrete!
    GreeBo wrote: »
    As above leave expansion gaps and also pour in multiple slabs, to avoid cracking.


  • #10
    Markcheese
    Registered Users Posts: 8,427 ✭✭✭Markcheese


    Dad11 wrote: »
    This is the area I want to rip up and replace with just concrete!

    Would it be easier ,cheaper and nicer to just replace the slabs with a nicer slab /paving brick ?
    Or is it part of the master plan ...? (can't do a decent maniacal laugh)

    Slava ukraini 🇺🇦



  • #11
    jameshayes
    Registered Users Posts: 3,772 ✭✭✭jameshayes


    Markcheese wrote: »
    Would it be easier ,cheaper and nicer to just replace the slabs with a nicer slab /paving brick ?
    Or is it part of the master plan ...? (can't do a decent maniacal laugh)

    or a nice small wooden deck maybe?


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  • #12
    GreeBo
    Registered Users Posts: 27,007 ✭✭✭✭GreeBo


    Dad11 wrote: »
    This is the area I want to rip up and replace with just concrete!

    I'd be doing that in at least 2 sections, each 6x6 (6 of your current slabs)

    If you went 12x3 I think you'd get cracks...


  • #13
    firestarter51
    Closed Accounts Posts: 2,382 ✭✭✭firestarter51


    2 sections is the way to go, i did something similar recently, easier for screeding the conc and no cracks i put steel mesh in mine but the area was much bigger


  • #14
    firestarter51
    Closed Accounts Posts: 2,382 ✭✭✭firestarter51


    shop around for the concrete, i saved 25 a metre when i looked last summer by making a few calls, i did a bit of haggling too


  • #15
    GreeBo
    Registered Users Posts: 27,007 ✭✭✭✭GreeBo


    f
    firestarter51 wrote: »
    shop around for the concrete, i saved 25 a metre when i looked last summer by making a few calls, i did a bit of haggling too

    For that volume you might even get some overage off someone (since you can do two pours)


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