These frames can either be removable concrete forms or stay in place insulating concrete forms which simply become a part of the finished roof.
How to build a concrete dome roof.
At one point i fell under the spell of domes as a building form and as i had plans to someday build my own home.
Rest the bottom chord of the joist on a supporting wall or a beam for larger buildings.
Step 2 install a row of concrete blocks on their faces with the open ends facing towards the sides.
Then a concrete mixture is poured spread through the framework and reinforced with steel bars which serve as a kind of skeleton for the cured concrete.
Set supporting steel joists at 16 3 4 on center.