Fold a Vault

This vault is folded from one sheet of paper.

Steps

1. Print the pattern.
   
2. Crease a valley fold along each line parallel to the edge of the paper.
   
3. Crease a mountain fold along each diagonal line.
   
4. Collapse the folds starting at one end of the paper. Flatten it to crease it before opening it again to the vault.
   

References

• (Salvadori, Hooker and Ragus 1990) (Kappraff 1990, 342-345)