Home instruction for sheet metal workers . from similar numbered intersections in the miter linesat top and bottom in the true elevation of the hip bar. A linetraced through these points, U V & Z Y, will be the pattern forthe hip bar. Making Hipped Skylights 247 For the pattern for the jack bar, draw any line in plan as ae beat right angles to the line of curb a* av, upon which place a dupli-cate of the common bar profile as F2, numbered from 1 to 6 as insimilar profiles. Through these points parallel to ae be drawlines, which intersect similar numbered lines through the projec-tions of the hi
Home instruction for sheet metal workers . from similar numbered intersections in the miter linesat top and bottom in the true elevation of the hip bar. A linetraced through these points, U V & Z Y, will be the pattern forthe hip bar. Making Hipped Skylights 247 For the pattern for the jack bar, draw any line in plan as ae beat right angles to the line of curb a* av, upon which place a dupli-cate of the common bar profile as F2, numbered from 1 to 6 as insimilar profiles. Through these points parallel to ae be drawlines, which intersect similar numbered lines through the projec-tions of the hip bar in plan, as shown by the short cut from 1 to6 and the long cut from 1 to 6, which represents the miter jointbetween the hip and jack bars in plan. From these intersectionsparallel to the center line B A erect lines into the sectional view,partly shown, until they intersect similar numbered lines drawnthrough the profile F of the common bar. The intersections ofthe short cut 6 to 1 in plan or la, is shown in the sectional view A. Fig 363. Diagram Showing Allowance in Hip Bar to LetJack Bar Pass Over Gutter in Hip Bar. by the miter line 1 to 6; and the intersection of the long cut1 to 6 or 2a in plan, by the miter line 1 to 2 to 3 to 4 to 5 to 6in the sectional view. At right angles to D 2 in the sectional view from the intersec-tions of the short miter cut 1 to 6 and the long miter cut 1 to 6lines are drawn intersecting the common bar pattern on eitherside from 1° to 6° for the short cut and 1° to 6 for the long cut,as shown by the dotted lines. A line traced through points 6to 1° to 6° is the miter cut of the jack bar mitering with thehip bar. The lower cut of the jack bar mitering with curb Eis similar to the lower cut on the common bar. This completes the developments of all patterns required forconstructing hipped skylights having one-third pitch with ridgeventilators, the bars placed similar to those in Figs. 364 to 367,the intersecting bars being shown in detail
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
