A treatise on architecture and building construction . § 10 JOINERY. 50 edg-e vz: From z draw -c^.r parallel toyiv, and equal to r?;from ,1, parallel to sc, draw x in\ prolon^j;- ;/ o to ;//, and par-allel to s c, draw .c r, and connect ;?;//; the an^^le required isas indicated by the bevel r. If cither edge is beveled onthe line j zc or parallel to it, the ang-le of the butt joint toapply to that edge must be taken at /^ while for the miterjoint the angle at s must be taken. 74. To find the miter for the joint of an inclined sill overan obtuse angle: Let /-c /, in Fig-. 40, be the angle over
A treatise on architecture and building construction . § 10 JOINERY. 50 edg-e vz: From z draw -c^.r parallel toyiv, and equal to r?;from ,1, parallel to sc, draw x in\ prolon^j;- ;/ o to ;//, and par-allel to s c, draw .c r, and connect ;?;//; the an^^le required isas indicated by the bevel r. If cither edge is beveled onthe line j zc or parallel to it, the ang-le of the butt joint toapply to that edge must be taken at /^ while for the miterjoint the angle at s must be taken. 74. To find the miter for the joint of an inclined sill overan obtuse angle: Let /-c /, in Fig-. 40, be the angle over which. Fig. -10. the sill is to incline, and let j x and .v v be lines parallel to,and equidistant from, /rj and .s/; tlien will .-j .v be the plan ofthe miter line of the sill. Now draw /c at right angles to/z, and let zuj he the height, yV the i)itch, and // the thick-ness of the sill. To find the miter angle down the face ofthe sill, make /r equal to //, and parallel to /;-/, draw cyindefinitely; then parallel to /c draw .rj, cutting cj in j, andconnect J and .c. The bevel at j then indicates the miterangle across the face of the sill. To find the miter angle on the square edge //, prolong theplan miter x::; towards o indefinitely, and parallel to /.cr draw/>o. Draw ^^ at right angles to /.:;, and prolong it indefi-nitely; make rs equal to //>, draw s r parallel to /s, and 60 JOINERY. 10 connect cz; the bevel at c will be the angle sought Ifthe bottom of the sill is horizontal, then Izx will be theangle of miter on that face. 75. To find the bevel for mitering the angles of a square
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
