Risks and Unknowns
These are outstanding questions that need further research, and unresolved issues that may compromise the success of the project.
Will shrinkage of concrete around water bags cause cracking during curing?
What is the minimum ratio of cellular concrete to empty space in the structure required to withstand expected stresses?
Will the tiedowns end up strong and solid?
Need to devise procedures and jigs for measurement of materials strength.
Will the excavation and winching be sufficient to launch the platform? The airbags?
Cable breaking at high tension could be very hazardous.
Water content must be carefully managed to keep setting and curing steps on schedule.
What aspects of material handling have not been anticipated?
Need to vet plans with someone experienced in cellular concrete, and pouring of concrete.