Or the seat frame may be omitted, and the coverings tacked directly to the chair rails.
The balloon-frame house is a typical form of framed construction, Fig.
300.

The essential parts of a balloon-frame are: 1.

SILL, 4"x8", which rests on the foundation.
2.

BEAMS, 4"x8", which rest on the cellar posts, 6"x6".
(Not shown in illustration.) 3.

FLOOR JOISTS, 2"x8", which rest on the sill and beams.
4.