Here is the first bottom piece of the library. The entrance is a semi-trapezoidal prism with one curved base.
The second bottom piece was created twice to place on either side of the entrance. This piece is an irregular, convex, quadrilateral, prism.
Here we dry fit the fourth bottom piece and the pentagonal pyramid. This fourth piece is a trapezoidal prism.
Finally all five bottom pieces of the library are complete.
We cut a top piece to cover all the seems and lay out the pyramid. The roof vegetation will be glued to this surface as well as the benches and observation wall.