. Cyclopedia of architecture, carpentry, and building : a general reference work .... 2 a < o »-^?J •< oo HH^U(dH zo < (d(/) o s C tca< tnOiJ M OD 4^ o < tlO a 3 «4 ?d « •a ^. b « bti _ ® CO 5_e8 3S§o -s o §i .» Si O DCS3 ^ .-« re 3j •S5 ?^ o . a O X 5£a a cI- p. p- -< in r 0 5 CA oo. SHEET-METAL WOKK 77 PLATE II. This problem will give an examination on triangulation, beingthe development of an irregular solid whose bottom and top areromid when viewed on horizontal planes, the top plane being cut offat an angle of 45° to the base line. First draw the base line 1 -6,2
. Cyclopedia of architecture, carpentry, and building : a general reference work .... 2 a < o »-^?J •< oo HH^U(dH zo < (d(/) o s C tca< tnOiJ M OD 4^ o < tlO a 3 «4 ?d « •a ^. b « bti _ ® CO 5_e8 3S§o -s o §i .» Si O DCS3 ^ .-« re 3j •S5 ?^ o . a O X 5£a a cI- p. p- -< in r 0 5 CA oo. SHEET-METAL WOKK 77 PLATE II. This problem will give an examination on triangulation, beingthe development of an irregular solid whose bottom and top areromid when viewed on horizontal planes, the top plane being cut offat an angle of 45° to the base line. First draw the base line 1 -6,2| inches long, j)lacing the point 1 2 inches from the margin line,and the line l-6 in the center of the sheet. Three inches abovethe bottom margin line draw the horizontal line l-6 in plan;then with a as center and radius equal to one-half of l-6 inelevation, draw the circle shown in its proper j)osition below theline l-6 in elevation. Now \ inch to the right of a on the linel-6 in i3lan, establish 5, which nse as a center, and with yf-inchradius describe the inner circle 1-3-6-e, which rei)resents theuijper horizontal plane of the irregular article. From the points 1 and 6 in plan, erect the vertical lines 1-1 and ^-^^ making theheight of the line 1-1 above the base line I-G in elevation3| inches, an
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Keywords: ., bookcentury1900, bookdecade1900, booksub, booksubjectarchitecture
