Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 130
y termed blind valley, because it is con-cealed in the plane of tlie main roof. The meas- FRAMING 107 urement should be taken along the center of theback of the valley, as shown by the dotted lines;and if backed—or, more properly speaking,grooved, so that the roof boards will have a solidbearing at… … Fig. 60. Intersection of Valleys—Eoof Donners. easily understood as may appear at first sight,especially where there is a projection of therafter to form the cornice. However, it is not usual to groove the val-leys, as they are generally concealed from viewand otherwise not of enough advantage to…
Architecture · Building
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