Home instruction for sheet metal workers . tail drawing. The scale drawing shows thefull profile of the pediment mold mitering on the wash. In some cases only part of the profile of the mold miters onthe wash, as in Fig. 211, where only that part of the pedimentmold marked A miters with the wash at a° b°. The wash is indi-cated by a d and the profile of the pediment mold by B. The pro-jection from c to d must be equal to the projection from c to din B. Take the measurements from drawing Fig. 210 and place themon a vertical line, as A B, Fig. 212 (see Folder 4) which isone-quarter full size, it
Home instruction for sheet metal workers . tail drawing. The scale drawing shows thefull profile of the pediment mold mitering on the wash. In some cases only part of the profile of the mold miters onthe wash, as in Fig. 211, where only that part of the pedimentmold marked A miters with the wash at a° b°. The wash is indi-cated by a d and the profile of the pediment mold by B. The pro-jection from c to d must be equal to the projection from c to din B. Take the measurements from drawing Fig. 210 and place themon a vertical line, as A B, Fig. 212 (see Folder 4) which isone-quarter full size, it should be understood that the student is tomake his drawing and work full size. At right angles to A Bdraw the line J C equal to one-half size, or 14 in., as only one-half elevation will be required. Place the heights of the hori-zontal molding, including, the height to the top of the pediment 154 Pediment on a Wash 155 in Fig. 210, on the detail in Fig. 212 on the center lineA B. Thus the total height of the horizontal mold to the top. of the wash from J to H is 4^ in., while the height from H tothe apex of the pediment E is 8 in., making a total of 12^ in. 156 Home Instruction for Sheet Metal Workers From C in the front elevation erect a line to the fourth line orbottom of the wash and draw the slant line D E, which gives thepitch or rake of the pediment. This pitch or rake can be furtherproved by using 1°, Fig. 210, as center and drawing the arc B this same radius with D, Fig. 212, as center, draw the arcB2 C2, and if the angle is true the distance from B2 to C2 mustequal that from B to C, Fig. 210. Draw the profile F1 below and at right angles to E D, Fig. 212,by placing the heights of the various members of the pedimentmold at points }i, 1 and lyi in. below the line, through whichdraw lines indefinitely. First draw the line b 9 at right angles tothe pediment mold, setting off the 2-in. projection b 1, the J^, the 1-in. radius, with ax as center for th
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
