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how many bags of cement will I need?

  • 26-12-2016 10:29pm
    #1
    f140
    Banned (with Prison Access) Posts: 875 ✭✭✭


    I have measured and I will need one metre squared of concrete. I have the mixer and plenty of sand/gravel but how many bags of cement (25kg) will I need to buy roughly?


Comments

  • #2
    alan1963
    Registered Users, Registered Users 2 Posts: 85 ✭✭alan1963


    f140 wrote: »
    I have measured and I will need one metre squared of concrete. I have the mixer and plenty of sand/gravel but how many bags of cement (25kg) will I need to buy roughly?

    Depends how deep your 1 metre squared of concrete is, or do you mean 1metre cubed?.


  • #3
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    http://www.irishcement.ie/wp-content/themes/irishcement/pdf/501_DL_flyer_1_V23.pdf


  • #4
    f140
    Banned (with Prison Access) Posts: 875 ✭✭✭f140


    sorry metre cubed. Its just for a small slab in front of a garage door. Whats the correct mix for this job. Car and jeep/trailer will be driving over it.


  • #5
    vicwatson
    Registered Users, Registered Users 2 Posts: 28,404 ✭✭✭✭vicwatson


    5 shovels gravel to 1 shovel cement


  • #6
    Anonamoose
    Registered Users, Registered Users 2 Posts: 84 ✭✭Anonamoose


    About 8


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  • #7
    alan1963
    Registered Users, Registered Users 2 Posts: 85 ✭✭alan1963


    320kg of cement
    630kg river sand
    1170kg gravel
    300 litres water


  • #8
    foxy farmer
    Registered Users, Registered Users 2 Posts: 3,194 ✭✭✭foxy farmer


    2 .5 tonne of concreting gravel and 10x25kg bags of cement.


  • #9
    red sean
    Registered Users, Registered Users 2 Posts: 2,917 ✭✭✭red sean


    f140 wrote: »
    sorry metre cubed. Its just for a small slab in front of a garage door. Whats the correct mix for this job. Car and jeep/trailer will be driving over it.
    It's a big slab if it's a cubic metre of concrete. You sure of your measurements?


  • #10
    Bonzo Delaney
    Registered Users, Registered Users 2 Posts: 1,577 ✭✭✭Bonzo Delaney


    I've always worked on the rule of thumb of 20std mixs/barrow fulls to the cubic meter at a half bag of cement a mix to 12-15 shovels of gravel
    It might not be the most scientific but its a good enough guide to go on especially for small works
    More importantly make sure the base is well compacted hardcore of min 150mm and conc is min 100mm with 10mm mesh steel to keep it together
    Tbh.... if its for your self work away and take tge chance of a consistent mix right through
    But if its a payable job I'd have a ready mix in.
    Including the small load charge and all its a far superior mix especially where there's traffic concerned.


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