Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 34
m III Fig. 28. NicholsRafterTable. transfer the spacing- to the scale forreading, and vice versa. 27. Rafter Table.—By means of therafter table, Fig. 28, it is possible todetermine rafter data for a square cor-nered building for the common pitches,the rise and run being known. The run of a rafter,… … POJT- --POJT ^J>»*J Iter Fig. 29. Run and Rise of Rafters. The rise is the vertical distancefrom the ridge end of the rafter to thelevel of the foot. The pitch of a rafter is the ratio ofthe rise of the rafter to the whole widthof the building. Thus, if the span, Fig. 30 WOODWORK FOR SECONDARY…
Woodwork (Manual training)
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