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Concrete vs Brick walls

Discussion in 'Innovative Techniques' started by stumpie, 24th Jun, 2015.

  1. stumpie

    stumpie Well-Known Member

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    hi all

    Wondering if any one has built using concrete whether poured in situ or using precast panels for external and internal walls.

    The questions I have:

    1. are they cheaper to build using concrete?
    2. is concrete better for insulation improving the star rating?
    3. is concrete faster to build?

    Any other info much is appreciated.
     
  2. bob shovel

    bob shovel Well-Known Member

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    really depends on what you're building and a case by case basis. if your wacking up a basic unit block, pre cast can be cost effective but you'd want a design to match.
    insitu v pre cast depends on the design. basic wall say, you'd go precast. stairs would be insitu
     
  3. willair

    willair Well-Known Member Premium Member

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    The first stage when all the walls are set is quicker,but the fitoff times would be the same up till lockup stage,.imho..
     
  4. stumpie

    stumpie Well-Known Member

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    Willair, what about cost? are there differences in cost?
     
  5. willair

    willair Well-Known Member Premium Member

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    Hard to say,core filled block walls vs standup prefab panels,every site would be different..
     
  6. Pistonbroke

    Pistonbroke Well-Known Member

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    Swings and roundabouts. If you have a shortage of bricklayers and lots of big walls (eg industrial) then precast comes into its own - no scaffolding, 100's m2 erected in a day. But you need crane access, structural steel etc to facilitate the efficient erection.

    Other systems allow you to form walls in situ without the need for formworkers or reo fixers.
     
  7. Be Developer

    Be Developer Property Developer Business Member

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    @stumpie

    Hard to say without knowing what you building

    But

    Concrete is expensive and if not poured right,can be costly headache.

    Saying that
    I have seen some concrete panel used in home building... It should be quick and easy to build homes.. Have to work out cost ..tradition vs panel (time vs cost)

    Needless to say insulation is much better as well (will post technical data soon)

    If you are going down this path... Look at ICF (insulated concrete form)... I personally like that method. I am planning to build our home using that or concrete panels for exterior wall.
     
  8. Coxy89

    Coxy89 Active Member

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    I don't think you will get any value out of precast concrete unless you are doing large amounts of it. You pay a premium for the work off site vs a typical brick or block construction and then you have the additional design drawings to worry about, waterproofing details with joints between panels and joints between different elements. A lot of headaches that can catch you out if you're not familiar with the construction method.

    Some of the preformed wall systems are getting quite good these days. At work we have looked at systems like these http://www.afswall.com.au/ for projects but its never really stacked up because the subbies doing that kind of system generally don't quote our work. Majority of projects I work on are 50m+ jobs
     
  9. Aaron Sice

    Aaron Sice Well-Known Member

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    @stumpie .....
     
  10. WestOz

    WestOz Well-Known Member

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    As said above depends on what your building, for all we know its a 15 story apartment block.

    Don't know what the product was called but I seen a single story panel house and sep GF (side-by-side on sml block which was odd) being constructed the other day out of 2500x1200x150mm interlocking solid foam biscuit with cement sheet on one side (avail in any style), gyprock on the other, better ratings than brick or concrete, straight off the truck, manually handled into place (no crane hire) tied together top & bottom with c-channel (+ around doors and windows), steel trusses and colorbond on a concrete slab.

    Basically it was sim to thick cool room paneling but using dif exterior surfaces.

    All conduit/access etc for services was pre-planned/ordered, gyprock join/finish is like any build, tape/plaster/paint, throw in fittings etc = lots of saving on labor costs, especially with diy.