Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 131
oint in it. All lines in eitherroof surface which are parallel to the ridge lines, as <£ r and r s\must be horizontal. Suppose that we draw the line// /■ in the roofsurface A, making the distance <j q or g t just one foot. Thensince this roof surface A has a pitch of eight inches to the… … Fig. 152. Plan of Intersecting Roofs. face B at the point /• and since it is a horizontal line, this point /must be eight inches above the point c, which is on a level withthe points <j and /. Now let us select the point 6 or s in the roof surface .13 andlet us suppose that it is also just eight…
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