When the side walls have been built to the top and before the concrete
has set, shove ½-inch bolts 18 inches long down into it. Space these
bolts 24 inches apart, 9 inches of the length being in the concrete.
The end wall forms extend above the plates to the peak of the roof,
and are filled to the top. While placing the concrete in the walls it
should be continually spaded as described on page 25.
[Illustration: =DETAILS OF DOORS AND WINDOWS=]