This section contains engineering drawings and specifications for the full scale 50 foot hex platform modules that we will assemble into a larger aggregate structure. A summary of the initial design decisions is here.
The module consists of an interior honeycomb of cellular concrete, and an outer shell of normal density concrete. The cellular concrete is formulated to have the same density as water, and a compressive srength of 1200 psi. The external shell of normal concrete is formulated without large aggregate, for a compressive strength of 3000 psi. The structure is poured in a three-stage process called neutral bouyancy water-bag casting.
Fundamental Parameters
|
radius |
25.000 |
ft |
|
thickness |
10.000 |
ft |
|
surface layer thickness |
0.330 |
ft |
|
Cell open diameter |
9.400 |
ft |
|
Foam expansion factor |
20.000 |
|
|
Detergent dilution ratio |
36.000 |
|
|
Cells |
25.000 |
|
Derived Attributes
|
Perimeter length |
150.00 |
ft |
|
Top area |
1500.00 |
sq ft |
|
Storage volume |
11883.01 |
cu ft |
|
Storage floor area |
1325.4 |
sq ft |
|
Perimeter area |
1500.00 |
sq ft |
|
total surface area |
4500.00 |
sq ft |
|
core volume |
13515.00 |
cu ft |
|
surface layer volume |
1485.00 |
cu ft |
|
total volume |
15000.00 |
cu ft |
|
Cellular concrete vol. |
1501.99 |
cu ft |
|
Cellular concrete weight |
88467.39 |
lbs |
|
norm concrete weight |
172170.90 |
lbs |
|
total weight |
260638.29 |
lbs |
|
Displacement |
930000.00 |
lbs |
|
core cement used |
29932.57 |
lbs |
|
surface cement used |
29593.93 |
lbs |
|
positive bouyancy |
669361.71 |
lbs |
|
flooded bouyancy |
-75444.72 |
lbs |
|
above waterline |
7.2 |
ft |
|
Cost per sq ft |
$4.55 |
|
|
Cost per cu ft |
$0.51 |
|
