Geometrical drawing, projection drawing, freehand and ornamental drawing, wash work and brush drawing, elementary perspective drawing, architectural drawing (1921)
International Correspondence Schools · Scranton, PA : International Textbook Co. · leaf 541
O is a series of braces made of Ih X 2 stufif, called bridging, which serve to keep the beamsfrom curling out of their places and thus rendering the flooruneven and cracking the plaster. The roof beams, as seenin the attic, are spaced 20 on centers, and where it is neces-sary to frame in a… … EXEF TRAN5UER5E SECTION 0 i 2 3 4 S 6 7 8 9 10 II la 13 14 IS 1 I I i I I I I I I ! I I I I I FEET
