Area of hexagon A = (12/5) r**2
height above water given thickness and density: H = thickness – (thickness * (weight/displacement))
Density of sea water 1.03 (nominal)
Pressure increase with water depth .43 psi/ft
Outward force F bearing on perimeter of mold:
¼ scale model=770 lbs/face, full scale= 40 tons/face
Tension thru mold walls and hinges for hexagon:
F sin(60) / 2 sin(30)
for full scale , this is 35 tons.
PSI per megapascal: 1 PSI = 145 Mpa
For density range .3-1.8, cellular concrete compressive strength has range 100-3600 PSI,
So at density 1.0, expect maybe 1000-2000 PSI.
1 gal = 3.63 Kgm = 3.63 L = .129 cu ft
Density of cement = 1500 kg/m**3
Dry density of sand (loose) = 1600 to 1700 kg /m**3
Density of normal concrete = 2400 kg/m**3
Foam: Ratio water to detergent = 36:1
Expansion ratio
From Concrepor: = 12:1
From Norizal = 30:1
From our foam generator: 20:1
The scale model requires 97 gal. water just for cement.
Requires 1,100 gals water for the cell bags.
Floatation Flooded
Cells Bouyancy Freeboard
3 8 tons .6 ft
4 23 1.8
5 38 3 ft
6 53 4.1ft