After you have levelled off the foundation erect the rear posts of
two-by-fours _A_, _B_ and _C_, _D_ (Fig. 156). These posts should be of
the same height and tall enough to allow the roof to slant toward the
front as in Fig. 155. The front posts _E_, _F_ and _G_, _H_, although
shorter than the back posts, should be tall enough to allow headroom. One,
two, or three more posts may be erected between the post _A_, _B_ and the
post _C_, _D_ if additional strength is required. The same is true of the
sides, and in place of having only one post in the middle of each side
(_M_, _N_ and _O_, _P_, Fig. 156), there may be two or three posts, all
according to the size of the house you are building; the main point is to
make _a compact and strong box_ of your framework so that in the wet
weather the banks surrounding it will not be tempted to push in the sides
and spoil your house.