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 Post subject: Concrete Walls ?
PostPosted: Sat Feb 23, 2008 5:57 pm 
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Joined: Thu Jul 27, 2006 6:12 pm
Posts: 34
Anybody considered/chose the concrete walls for their new home ? Cast in place/precast tilted/concrete panels ? How do they shape up costwise, construction time, etc ?


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 Post subject:
PostPosted: Wed Feb 27, 2008 1:59 pm 
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Joined: Mon Oct 31, 2005 12:04 pm
Posts: 39
Location: Morley, Perth WA
Tilt-up concrete panels were used for 100's of new houses during the re-building of Darwin after Cyclone Tracy decimated the place in 1974.

Sorry can't help price wise.


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 Post subject:
PostPosted: Tue Mar 04, 2008 4:38 pm 
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Joined: Mon Jan 16, 2006 8:59 am
Posts: 108
Location: halls gap vic
Tilt up construction has taken over the commercial industrial type of construction and i reckon has potential in the domestic scene but I think the costs are too high , cranes , fiddly forming up for windows and tricky corners etc It might work to form the backbone of a house a major middle wall and west side wall (wow think of all that thermal mass inside ) and then conventional or strawbale , mudbrick for the rest ????
cheers AP

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andrew , part time carer, other part time owner builder, building a house in halls gap victoria


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 Post subject:
PostPosted: Tue Mar 04, 2008 5:27 pm 
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Joined: Fri Jun 10, 2005 11:43 am
Posts: 310
Location: Perth, Western Australia
Tiltup construction is pretty much the rule now in Perth for commercial construction. I don't think it is so viable for residential work because you need quite a lot of space to work in - a big slab plus room around the building for cranes etc. There are other problems, but I think that is the showstopper. Precast panels shipped to site might be viable, but I don't know of anyone doing that. It would need to be significantly cheaper to justify the loss of flexibility.

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 Post subject:
PostPosted: Tue Mar 18, 2008 9:51 am 
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Joined: Thu Jul 27, 2006 6:12 pm
Posts: 34
Thanks to all who replied. After checking the sums and practicalities I've decided that concrete walls (of whatever kind) don't make sense for my project. I tried to get some info/quotes from a major concrete company, D***a, they never bothered to reply to my emails or to return the calls. We'll most likely build the walls with masonry blocks.


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 Post subject:
PostPosted: Sun Mar 30, 2008 4:45 am 
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Joined: Sat Dec 10, 2005 2:12 pm
Posts: 14
Location: Adelaide, South Australia
Fair bit of pessimism here.
I had a mate who decided to build a small warehouse (or large shed) utilising concrete tilt-up. He had no expertise in this, or building in general, just the attitude that it could be done, which it was. It did take a fair bit of home-work on his part. After he had the floor slab poured and cured, he had a wall poured on the slab, let cure, then the second, etc.,etc. On the day, a large crane was organised, and the walls were installed.

The important thing to have is the "can do" attitude. If you want to do it, you will.

Cheers

doggy


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 Post subject: Re: Concrete Walls ?
PostPosted: Sun Mar 30, 2008 10:07 am 
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Joined: Wed Apr 26, 2006 2:26 pm
Posts: 59
kristofw wrote:
Anybody considered/chose the concrete walls for their new home ? Cast in place/precast tilted/concrete panels ? How do they shape up costwise, construction time, etc ?


I'm surprised that there has been no mention of Zego or some other ICF system.

Basically a concrete wall surrounded by foam. Goes up fast too.

Check out http://www.zego.com.au. There are lots of posts on this forum about Zego and the others. Use the Search at the top of the screen.


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 Post subject:
PostPosted: Mon Mar 31, 2008 10:47 am 
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Joined: Thu Jul 27, 2006 6:12 pm
Posts: 34
Quote:
I'm surprised that there has been no mention of Zego or some other ICF system.

I'm aware of a couple of wall construction systems based on concrete core in an insulation envelope, but they don't suit, as I'm after thermal mass in the inside walls. Rammed earth and concrete have the highest such mass, but rammed earth walls would be too thick for my project. That leaves concrete and the next best choice, which is concrete blocks. I've had a very poor response from the concrete outfits here, they just don't seem to be interested in small jobs, so I've decided to build from concrete blocks.
Quote:
The important thing to have is the "can do" attitude. If you want to do it, you will.
It's all very well, but I've a limited amount of time and money and have to be practical.


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 Post subject:
PostPosted: Mon Mar 31, 2008 6:25 pm 
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Joined: Fri Jul 14, 2006 10:54 pm
Posts: 50
hello,

great choice, i think blocks/bricks are still the most practical building techniques around and very much under-rated,

what thickness you using?

i would look at putting in concrete brick sills to create a fall and drip "groove" as such to keep water of the wall,

thankyou

robots


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 Post subject:
PostPosted: Tue Apr 01, 2008 1:51 pm 
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Joined: Thu Jul 27, 2006 6:12 pm
Posts: 34
Quote:
great choice, i think blocks/bricks are still the most practical building techniques around and very much under-rated,

what thickness you using?


90mm, plus float and set plaster on both sides, altogether approx 120-130mm.
Sills, etc, won't be needed, as all these walls will be inside.

Cheers

Chris[/url]


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 Post subject:
PostPosted: Thu May 08, 2008 8:05 am 
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Joined: Tue Feb 12, 2008 12:20 pm
Posts: 17
Location: Melbourne
We are building using ICF but it has now been pointed out to us that perhaps the underground basement should be built with Boral Connex Mortarless Masonry as we do not need the insulation properties of ICF down there.

Does anyone have any experience of using this product?

Thanks

Simon


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 Post subject:
PostPosted: Fri May 09, 2008 4:57 pm 
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Joined: Mon Jan 16, 2006 8:59 am
Posts: 108
Location: halls gap vic
Pardon my ignorance , but what is ICF ? just curious
do you have a web ref to look ?
Cheers AP

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andrew , part time carer, other part time owner builder, building a house in halls gap victoria


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 Post subject:
PostPosted: Sat May 10, 2008 8:00 pm 
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Joined: Tue Feb 12, 2008 12:20 pm
Posts: 17
Location: Melbourne
agp wrote:
Pardon my ignorance , but what is ICF ? just curious
do you have a web ref to look ?
Cheers AP


Hi

ICF is Insulated Concrete Forms. Its a polystyrene mould that you build like Lego, you put steel rods in it for strength and then pour concrete in to form the walls. The polystyrene then remains in place and offers great insulation.

There are about 7 companies that make it.

www.thermacell.com.au
www.formcraft.com.au

others are -

Insulbrick
Eco-block
Polyform
Zego (not recommended apparently).

We are building the outer walls of our house from ICF for heat and sound insulation, and the inner walls from stud.

Simon


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 Post subject:
PostPosted: Sat May 10, 2008 11:19 pm 
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Joined: Mon Jan 16, 2006 8:59 am
Posts: 108
Location: halls gap vic
thanks Simon, looks good , I was aware of zego and others but hadnt heard of icf. cheers AP

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andrew , part time carer, other part time owner builder, building a house in halls gap victoria


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 Post subject:
PostPosted: Sun Aug 17, 2008 7:10 pm 
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Joined: Sun Jul 27, 2008 12:19 pm
Posts: 4
Location: moe
ok whats wrong with zego ? Can anyone tell me before I sign with this company?


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