The Boys’ Underground Club-House
is given, affording an idea of the proper proportions of the cave. When the foundation is entirely finished, collect your building material.
If you have
New Lumber,
use it; if not, use old lumber, and if you are building in the woods the house may be built of logs and roofed with poles, covered with bark and boughs. The better the material the stronger will be the house. Secure some good sound planks and a supply of long strips two inches thick and four inches wide. Use two-by-fours for the frame of the house.
To give a
Pitch to the Roof,
to allow the water which filters through the dirt above to drain off at the eaves, make the rear posts, A, B and C, D (Fig. 77), exactly equal in length, but considerably longer than E, F and G, H, as in Fig. 79.
To add strength, erect another post midway between A, B and C, D.