. Cyclopedia of architecture, carpentry, and building; a general reference work .. . In Fig. 19 is shown a 12-inch square,the diagonal m being 17 inches. Bydrawing lines from the base a 6 to cut thediagonal line, the part of the hip to corre-spond to that of the common rafter will beindicated on the line 17. In this figureit is shown that a 6-inch run on a &, which represents ihe run of afoot of a common rafter, will have a corresponding length of 8^ Fig. 20. Method of Determining Run of Valley for Additional Run in Common Rafter. 356 THE STEEL SQUARE 15 inches run on the Hne 17, which represe
. Cyclopedia of architecture, carpentry, and building; a general reference work .. . In Fig. 19 is shown a 12-inch square,the diagonal m being 17 inches. Bydrawing lines from the base a 6 to cut thediagonal line, the part of the hip to corre-spond to that of the common rafter will beindicated on the line 17. In this figureit is shown that a 6-inch run on a &, which represents ihe run of afoot of a common rafter, will have a corresponding length of 8^ Fig. 20. Method of Determining Run of Valley for Additional Run in Common Rafter. 356 THE STEEL SQUARE 15 inches run on the Hne 17, which represents the plan Kne of the hip orvalley in all equal-pitch roofs. In the front gable, Fig. 14, it is shown that the run of the commonrafter is 10 feet 4 inches. To find the length of the common Fig. 21. Corner of Square Building, Show-ing Plan Lines of Plates and Hip. Fig. 22. Corner of Square Building, Show-ing Plan Lines of Plates and Valley. take 12 on blade and 9 on tongue, and step 10 times along the raftertimber; and for the fractional part of a foot (4 inches), proceed as wasshown in Fig. 16 for the rafter of the main roof; but in this case measureout square to the tongue of square No, 1, 4 inches instead of 6 additional length for the fractional 4 inches run can also befound by taking 4 inches on blade and 3 inches on tongue of square,and stepping one time; this, in addition to the length obtained by Heel cut of Valley
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