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 562
FiG. 66 ters. A collar beam, or tie, should connect each pair, in orderto prevent them from spreading under the weight, unless thefloorbeams or ceiling beams serve this purpose. After theroof is complete, it is necessary to treat the apex in somemanner that will keep out water. Fig. 66 shows a… … Fig. 67 where sheet metal is carried over the ridge and serves toform a water-tight drain, and another method is shown inFig. 67, where a turned wooden roll is laid over the angle, 100 ARCHITECTURAL DRAWING §7 85. Liatliing.—In nearly every case, a wall that is tobe plastered requires some form of…
