>>2232621>>2232622>>2232624I'm thinking I'm going to go with the underground house anon has suggested. Instead of using wood I will use steel RHS beams and a steel reinforced concrete roof with at least 1 foot of soil above it.
See pic. My only concern is keeping water out. I do not know how I am meant to keep water out of the entrance but I have not finished reading the book. I'm guessing some kind of underground piping system?