@noni I’ve only poured the full aircrete panel. We’ll do the one with reinforcing this weekend and compare them after two weeks. Illl let you know how they go.
Posts made by noni
RE: Workshop in Australia
Council approval issues with aerated concrete.
When I was considering the dome home I contacted council and was told they’d be happy with any material as long as it was designed by a structural engineer.
The development approval though was a surprise!
There is no national building code for aerated concrete so council’s building inspectors won’t do the progress inspections and certifications required at different stages of the build. These include: inspecting and approving the footings before concrete is poured; reinforced concrete floors etc had to be inspected and signed off by the structural engineer.
For me this would be a huge impost: the engineer is 800kms and two flights each way from Longreach. And three days out of his working week. As a result council has agreed that a local builder can give a verbal report answering the engineer’s queries by phone and we supply photos and videos as required and if the engineer’s happy he’ll sign off on it.
I suppose the moral is to use your local neighbourhood structural engineer (though that’s what I did).
RE: Can you tell me what foaming agent can be used in Australia thanks
@Zander earth choice dishwashing liquid is great. The earth choice laundry detergent however is a disaster. Failcrete all round.
Another good one available in Longreach is
“Trucking Blue. Not only makes fine aircrete but the car sparkles. Might be harder to get out your way. Transporting cattle and mining gear on the highways, unsealed roads and dust paddocks of Outback Oz the only sign of life the a million insects dead on the windscreen, you need a heavy duty cleaner to spruce up.
RE: pouring floor: in sections? Dry sticking to wet?
I just saw this post and in case you’re not already enjoying your new floor I thought I’d share this.
At the Domegaia workshop I attended I n Mazunte, I was concerned by the number of broken and chipped blocks we were producing.
Apart from reassuring me I’d get better with practice, Hijar explained there’d be little waste in the end as all the broken and crumbled blocks ended up in the floor slab. You just pour some fresh aircrete over the top.
So I don’t know if you need to worry about wet and dry sections .
I haven’t got that far yet, but I was going to pour the floor in sections using two wooden forms to make wedges from the centre, like pieces of pie.
I was going to leave it to set for a day.
Then move the forms to create 2 wedges either side of the first. Pour them. And continue till I get to the front door.
Foamcrete walls anyone?
As well as the domes I’m building I’m also converting a pergola into a communal kitchen/laundry.
I’d like to pour aircrete panels as the non-loadbearing walls. I’ve poured one with the normal block formula to see how solid it is and will let you know the result.
If it works I’d like to fix it to the frame with a right angle bar at bottom and top, and join them to each other with mortar and fabric.
But I’d like to know is anyone out built or used aircrete panels?
Recipes and tips would be gratefully received.
RE: How many bags of cement does one need . . .
Hi dme2, I’m building three connected domes in Longreach, Qld and I did calculation.
I actually wanted to know how many blocks I’d need to make and could work out the amount of concrete.
I’ll use one of my domes ok. Bedroom radius is 2250mm
The surface area of a sphere: 4xpi x radius squared. So surface area is 4 x (22/7) x (2250 x2250) or 63,643,857.
I need half a sphere (31,821,429) PLUS the part of a hemisphere enclosed by the height of the centre pole I’m using (900mm), ie 900/2250 of a hemisphere: 12,728,572.
The total surface area I have to cover is: 43,550,001sq mm.
My blocks measure 220x330mm. Total area 72,600sqmm.
So number of blocks is 44,550,001 /72,600
Thats 600 blocks.
I can make 70 blocks per pour using 6.2 bags.
That’s 9 pours And 55 bags of cement.
The numbers just look scary.
RE: Can I go up to a 40' diameter?
hi beach bum
The dome is an inherently stable shape so size should not be a problem. At the workshop Hijar said with Steve’s dome they were worried that forces on the dome could push outwards so added buttressing around the base, which they later decided was unnecessary. But I’d try something smaller to start with.
RE: Labor material cost and time frame examples
At the Mazunte workshop 35 inexperienced people got a 6m dome almost completed in a week. The organisers quote about $10,000 for a dome home (not including the cost of the footings, because it varies so much depending on the soil type).
The biggest expense was for plans drawn up by a structural engineer as required by my local council. I reckon it’s costing me about $A1 a block (220 x 330mm) and I’ll need about 2500 for the 3 domes.
RE: Incorporating bottle bricks into aircrete block
Hi, I am making the aircrete blocks in forms so they come out as individual 33cm x 22cm blocks with (mostly) square corners. I have been grinding the top off the bottle and joining two halves with waterproof tape, dipping in latex and incorporating into the block when poured. I don’t know how to get pix from my iPhone to here. But they let in lotsa light.
RE: Aircrete on the Sunshine Coast, Queensland Australia
@Kwagga sorry I don’t understand your question? Vids or pix of what. My project? I’m tearing my hair out trying to get a quote for the footings from local builders. They agreed to provide a quote in January and still haven’t come through.