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required blocks

  • 09-03-2015 9:36pm
    #1
    Milltown17
    Registered Users, Registered Users 2 Posts: 142 ✭✭


    Hi lads
    Im planning a garage build and trying to figure out how many blocks required. Im doing 4 inch cavity wall.my garage is 8m x 6m with a 10 foot opening for garage door.then 2 windows and a door.two gables on it.just looking how would I go bought calcuating how much blocks required.


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,581 ✭✭✭✭sydthebeat


    10 blocks per sq m for single leaf, 20 blocks for double leaf. Measure through opes to allow for cutting.

    That's a general rule of thumb


  • #3
    Milltown17
    Registered Users, Registered Users 2 Posts: 142 ✭✭Milltown17


    Thanks for the reply. Sorry now for a stupid question but how do I calculate how many square metres do I have to cover


  • #4
    kkelliher
    Registered Users, Registered Users 2 Posts: 1,583 ✭✭✭kkelliher


    sydthebeat wrote: »
    10 blocks per sq m for single leaf, 20 blocks for double leaf. Measure through opes to allow for cutting.

    That's a general rule of thumb

    Oh the QS in me is killing to answer scientifically:D:D:

    9.88 blocks per m2 in a single leaf on edge, 20.22 blocks per m2 in a single leaf on flat.

    sorry Syd cant resist when it comes to counting blocks.......


  • #5
    sydthebeat
    Subscribers Posts: 42,581 ✭✭✭✭sydthebeat


    kkelliher wrote: »
    Oh the QS in me is killing to answer scientifically:D:D:

    9.88 blocks per m2 in a single leaf on edge, 20.22 blocks per m2 in a single leaf on flat.

    sorry Syd cant resist when it comes to counting blocks.......

    i was rounding off LOL :D:D


  • #6
    declan52
    Registered Users, Registered Users 2 Posts: 72 ✭✭declan52


    sydthebeat wrote: »
    10 blocks per sq m for single leaf, 20 blocks for double leaf. Measure through opes to allow for cutting.

    That's a general rule of thumb

    If you count the openings as solid you will end up with near 200 extra block. If your block layer needs that many extra for cutting then you need to buy him a new bolster.


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  • #7
    kkelliher
    Registered Users, Registered Users 2 Posts: 1,583 ✭✭✭kkelliher


    declan52 wrote: »
    If you count the openings as solid you will end up with near 200 extra block. If your block layer needs that many extra for cutting then you need to buy him a new bolster.

    It allows for cutting, placing cills and lintels and has been standard industry practice since the start of time.......


  • #8
    sydthebeat
    Subscribers Posts: 42,581 ✭✭✭✭sydthebeat


    well im calculating something near 2300 blocks (one dividing wall) , so allowing 9% for cutting / breakage etc isnt outlandish.

    if the OP wants to remove the garage door from the calculations, fine.....

    edit: actually checked again and probably closer to 2700 blocks


  • #9
    declan52
    Registered Users, Registered Users 2 Posts: 72 ✭✭declan52


    kkelliher wrote: »
    It allows for cutting, placing cills and lintels and has been standard industry practice since the start of time.......

    You can get away with counting small windows up to probably a meter wide but the op has a 3m garage door opening.
    You shouldn't need extra blocks to set cills and heads, you will need brick or soapbars depending on the depth of the cill and head to get you back into coursing.
    The old chestnut of that's way its always been done doesn't mean it was the right way.


  • #10
    kkelliher
    Registered Users, Registered Users 2 Posts: 1,583 ✭✭✭kkelliher


    declan52 wrote: »
    You can get away with counting small windows up to probably a meter wide but the op has a 3m garage door opening.
    You shouldn't need extra blocks to set cills and heads, you will need brick or soapbars depending on the depth of the cill and head to get you back into coursing.
    The old chestnut of that's way its always been done doesn't mean it was the right way.

    Its irrelevant what anyone things on this or how this works as the person the OP contracts to do the work will ultimately be the person that matters, as his cost and method of measurement is all that matters.


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