At the "request" of the Overseer (Hallowed be her name) this is copied from an ongoing thread in the members forums:
From the NNPG Radio Net discussion, this is one option for a quick (but expensive) shelter assembly for a long term location.
http://www.concretecanvas.com/There are other manufactures around the world.
PRO's
Quick assembly (24 hours to habitable)
2 person operation
Can be buried under earthen cover after drying and waterproof coating
Can be painted
Most of the tools for assembly can be rented from the company
CON's
Expensive ($25,000 for the small size; 5m x 5.6m = 16.4ft x 18.4ft, 8ft center height )
Heavy, you will need a crane, forklift or front loader to move and install the rolled canvas
You need a water source, preferably sprayable, to soak the canvas and start the cure
Additional coating (paint or waterproofing) means other pieces of equipment are needed
Another company offers their technology, but does not sell actual structures. The want to support independent contractors around the world. I have no idea how successful this will be or is at the present moment.
http://www.binishells.com/systems/systems4.htmlThey claim that the cost for a smaller shell is in the $3500 range but that will depend on the contractor who does the work.
These are inflatable molds which are then pumped and/or sprayed with cement. There is a large amount of equipment needed for this operation and it is perhaps better suited for multiple buildings (think at a minimum, a homestead with external building like a barn, sheds etc). This could be used to rapidly build a community of buildings.
VERY large buildings are possible with this technology (Stadium size etc.)