@HandyDan said in Average Cost Per Sqft:

3 gallons of Dresses foam agent

Can you pleas describe or provide a link to this "Dresses foam agent"? I can't find it.

@Zander Thanks man! Yours seems better than mine (experienced) so I am going to use yours.

@Kwagga I just use online conversion calculators. Just Google "inch to meter" or what ever units are involved.

Your plans seem very exciting to me. I will be following your methods. Please post as much as you can. I too hope to inspire others in community as I proceed with aircrete structures. Your method seems very applicable to building walls.
I am thinking of a pole barn type structure with your pet bottle bricks as walls between post. Should be a stronger wall spanning say 8'. Alternatively forming up the space and pouring aircrete into it with some type of reinforcing.

Metal and concrete seems to always have issues eventually. I will be painting all metal embedded into concrete like ferocement water tanks I am going to build. I know there are products to treat cured concrete so new concrete will "stick".

@zander Zander thanks for the info. This will have significant effect on my bottom line and let me build more. I greatly appreciate those of you who are posting actual experience. I hope to be joining you soon with detailed documentation of my build experience.

@zander said in aircrete vs. ferrocement:

We walk on our domes frequently.

Interested in the block thickness. You walk often on 3.5 thick blocks. I presume at the density DomeGaia publishes i. e. 19lbs cubic foot. My dome will be 21foot dia internal and I was thinking I needed 5" block thickness. If I can go 3.5-4 that would certainly help out in material cost. Has anyone figured out the ratio of needed block thickness to dome diameter?

Zander, this is why I am a member of this forum. Bright creative inventive people come up with great ideas. I have wondered if the amount of Portland which did not get mixed up in the bottom of my drum had a major effect on my first bath failing. It was maybe 2-3 cups of Portland not mixed. I think that may well have been enough to throw the pour off.
I will be making the famous Zander whisk before mixing my next batch.
Thanks for the clever idea.

I will be documenting and posting my build and experiences. I want this tech to spread. We are all relatively new to this and we are all learning. I will be soaking up all knowledge and experiences I can get.

My thought on this is to run the conduit along thew base perimeter of the arch. It would be covered by the internal finish or a small accessible base plate. It would be the simplest and most cost effective I think. Less excavating in the floor.