Various methods for securing the door jamb are shown here:
The doors leading to the other two domes will be plastered round covering the jamb. We are using pressure treated lumber. I hesitated a long time to tell you this. There is a non-toxic pressure treated system available now? The way to go no doubt. All the jambs will be completely plastered over. Termite prevention.
The main entrance is a huge 82″ door (code) and will be hung like a traditional door in a pre-manufactured jamb.
Clear as mud?
All s/s screws.The 2 x 4 block on the RHS is fine. I will use this method to secure electrical fittings etc. Nailed into bag, screwed into post.
Note chicken wire. (will it also do to contain ducks? – it could then be called “Ducky” wire?) Move on Mike.. On a normal door jamb, you can cut the wire as you go up and wrap around the end of bag to get a nice round surface to plaster onto. This is instead of wrapping individual bags. Coudn’t use on the front door as its a “compound joint”. See below.
This is it ….Moment of truth… In general, no matter which plate you use, the plywood is angle cut to fit the radius of the curve. The bracket is screwed into the jamb post with stainless steel screws (s/s only because I have a huge box of the things). The nails going into the bag are galvanised. On Top of this will rest bags – so its not going anywhere? Every 3 or 4 rows up… Eiffel tower stuff this.. These shots were taken for clarity. The final fit has barbed wire in two planes. Easier to see like this.
First row of earth filled bags tie-ing in some walls and the door jamb. A bit complex to describe so wait until it’s on the up and it will become clear? Huge buttress here hey, to contain the forces from the arch going over the door one day. Over built. Hurricane and tornado proof this baby..Note the gravel on the inside of the dome and outside. Anti-percolating. The inside gravel is at least 12″ (30 cm) below FF height. I will post more here later as it includes the wall for the dome, the buttresses and the wall for the covered entrance to the dome. We will also build a small round “window” in the entrance wall for practice and for light. Don’t want to blow you away. ha ha.