Here are the measurements for the individual pieces that will make up the floating garden modules. They are calculated based on the amount of plywood we have available.
Using three sheets of plywood with two pieces of foam insulation board sandwiched in between will give enough buoyancy for the floating garden to float. From the calculations this will allow us to make a number of floating gardens allowing us to test variables by making each floating garden different
Module size testing
We are trying to determine the module size we need to be able to withstand the turbulence at sea and to be stable enough for us to walk on.
The module has to:
-Use the material limitations we have economically
-Have enough buoyancy to allow two people to float on it
-Able to walk along it comfortably
-Have enough room for added safety equipment/space to transport harvested food
-To be used as individual life rafts if the gardens break
-Be able to fit into the size of transport we have (a van)
The following are some practical investigations into sizes of possible modules:
The optimum width we found was 60cm across for stability and to make best use of our materials
A length of 240cm we found to be long enough for us and some equipment
Lastly if we break the module is long enough to be used as a raft
-So a module length of 240cm x 60cm will be used
Below we are looking for the optimum configuration to make the modular boat :
Quick 3d modular model :
- 6 sided objects
- 12 pieces
- 5 level thick (!!!)
Not very reliable, nor stable, quite fragile in the end.
So we were looking for alternative shape :
Stachik modules seems to always cause the same problem, they end up producing fragile and uneven asymetrical structures.
So instead of stacked structure, we are going to side-by-side attached structures...
Next we tried to simulate the structure :
and then, using our shape as a pattern :
We observe a semi-random pattern, or more irregular "natural" pattern could be quite desirable :
This comes back to the floating bits experiement ...
Modules showing their ballast bags
Some variations in the module design: different use of tyres
A central mast allows us to create a much more stable structure making everything tensile with the use of cables
Google sketchup model of what the modules look like configured into our boat
More flexible version, not hard floor, just modules, large double ballasts. By Cesar Harada & Owen Hodgkinson
Now building :