. Cyclopedia of architecture, carpentry, and building; a general reference work .. . vera square corner. The figures to be used on the square for the hip, will be 17 forrun in each case. For the i pitch, the figures to be used would be17 inches run and 4 inches rise, to correspond with the 12 inches runand 4 inches rise of the common rafter. For the f pitch, the figuresto be used for hip would be 17 inches run and 9 inches rise, to corre- / / /.? V CO I I I l^ITi Tl0^|9 18 17 16 15 K i3 12 |l w 1?531 2 -o3 2 Pitch it?24 il 305 ? S,£4 I Bj_ Fig. 15. Steel Square Giving Various
. Cyclopedia of architecture, carpentry, and building; a general reference work .. . vera square corner. The figures to be used on the square for the hip, will be 17 forrun in each case. For the i pitch, the figures to be used would be17 inches run and 4 inches rise, to correspond with the 12 inches runand 4 inches rise of the common rafter. For the f pitch, the figuresto be used for hip would be 17 inches run and 9 inches rise, to corre- / / /.? V CO I I I l^ITi Tl0^|9 18 17 16 15 K i3 12 |l w 1?531 2 -o3 2 Pitch it?24 il 305 ? S,£4 I Bj_ Fig. 15. Steel Square Giving Various Pitches to Foot of Run. 332 THE STEEL SQUARE 11 spond with the 12 inches run and 9 inches rise of the common rafter;and for the ^ pitch, the figures to be used on the square will be 17inches run and 12 inches rise, to correspond with the 12 inches runand 12 inches rise of the common rafter. It will be observed from above, that in all cases where the planof the hip or valley is a diagonal of a square, the figures to be used on Top cut for i3ft. 6in. Corr>TY^on • Rafter. Plurrvb Cut Fig. 16. Method of Laying Out Common Rafters of a %-Pitch Roof. the square for run will be 17 inches; and for the rise, whatever the roofrises to the foot of run. It should also be remembered that this is thecondition in all roofs of equal pitch, where the angle of the hip orvalley is a 45-degree angle, or, in other words, where we have thediagonal of a square. It has been shown in Fig. 12 how other figures for other planangles may be found; and that in each case the figures for run vary Heel cut of hip .... ^ u- ^hip Top cut -for rup of hipj
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Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding
