A treatise on architecture and building construction . Fig. 41. 76. WindoAV or door openings in straight walls withsplayed jambs and circular splayed soffits present problemsrequiring an accurate knowledge of the treatment of splayedwork, to secure the proper bevels and joints. To unfold thelength and shape of such a window soffit on the plan of thewindow shown in Fig. 42, let a a, h h be the opening, withsplayed jambs a b and a b and circular soffit equally the splay lines of each jamb a b and a b until theyintersect at d\ draw the elevation of each side of the open-ing as a\
A treatise on architecture and building construction . Fig. 41. 76. WindoAV or door openings in straight walls withsplayed jambs and circular splayed soffits present problemsrequiring an accurate knowledge of the treatment of splayedwork, to secure the proper bevels and joints. To unfold thelength and shape of such a window soffit on the plan of thewindow shown in Fig. 42, let a a, h h be the opening, withsplayed jambs a b and a b and circular soffit equally the splay lines of each jamb a b and a b until theyintersect at d\ draw the elevation of each side of the open-ing as a\.aca and bfb\ divide the semicircle ac a into anyniimber of equal parts, say six; with ^ as a center, describe 10 JOINERY. 61 the arcs a^r^ cc\ ii\ and bh, all of indefinite lenoth; on ^, layoff the six parts taken from aca and connectg to d] then a b io e h is the length and shape of the soffit. Fio. 42. to be bent over a center after being- treated by .some one ofthe several methods hereafter explained. After the sofiit isbent, the edges inust be beveled as shown. Whether bentby means of keyed grooves—saw kerfed or built up and 02 JOINERY. § 10 backed with staves—the grooves or staves must radiate fromthe center d. 77. Window or door openings in a straight wall withsplayed jambs and pointed soffits next demand attention. Tounfold the length and shape of the soffit on the plan shown inFig. 43, let r r ^pp be the plan of the opening; let/ r be
Size: 1389px × 1799px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
