Things are coming together nicely with my dome project.  Made a trek yesterday to speak with the county government folks to make sure I don't need a building permit for my greenhouse.  Fortunately, I am good to go without a permit.  I have decided to build the bottom row of geodesic triangle frames and to temporarily install them before pouring the underground concrete piers that will anchor my dome.  This way I will be able to mark the exact points for digging the foundation holes.  Don't want to make any mistakes (measure twice, pour once).

Have decided to increase the size of my dome in order to utilize a larger water tank (for the thermal mass heat sink and aquaponics fish tank).  I made the decision this week to go with a polycarbonate triple wall product for the greenhouse glazing.  This is slowing down the project a bit, but will be much better in the long run.  More photos of this phase to be posted soon.