. Canadian forest industries January-June 1920. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. March 1, 1920 CANADA LUMBERMAN AND WOODWORKER 51 meet with unanimous approval on the part of the retailers remains to be seen. A discussion of the matter at this meeting will be ad- visable. It is hardly practical to give in this report a detailed analysis of the manner in which the Western Associations base worked out their new unit. An outline of the situation, however, will be at- tempted. The Associations, in explaining- the situation say:— 1. A canva
. Canadian forest industries January-June 1920. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. March 1, 1920 CANADA LUMBERMAN AND WOODWORKER 51 meet with unanimous approval on the part of the retailers remains to be seen. A discussion of the matter at this meeting will be ad- visable. It is hardly practical to give in this report a detailed analysis of the manner in which the Western Associations base worked out their new unit. An outline of the situation, however, will be at- tempted. The Associations, in explaining- the situation say:— 1. A canvass of the trade has shown that 4 J/4 inches is the most common weather exposure on 16 in. shingles. On 18 in. shin- gles, investigation has shown that 5J/2 in. is the most general and efficient exposure. The manufacturers accordingly specify these ex- posures. 2. The "square" unit on 16 in. shingles specifies twenty-two double courses per bundle, four bundles per "; The width of the bundle is to be 20 in. with \y2 in. tolerance per course for "fits" in packing. This gives 22 x 2 x 4 = 176 single courses per "; The lineage per course is Y&y2 in. and the standard wea- ther exposure Ay2 in. 176 x 18^ x Ay2 — 14652 in. or square feet covering capacity per "; 3. Allowing for y in. spacing between shingles in laying, the area covered will be slightly increased, to scpiare feet. 4. With 18 in. shingles the "square" unit specifies eighteen double courses per bundle, four bundles per "scpiare," and the width of the bundle 20 in. with 1T/, in. tolerance for "fits" in packing. Figuring in the same manner as for the 16 in. shingles, a covering capacity is shown, in the case of 18 in. shingles, of square feet, and allowing y in. spacing between shingles in laying, this is in- creased to square feet. 5. The shipping weights on Red Cedar Shingles, packed by
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforestsandforestry
