Bulletin Volume 36

Bulletin Volume 36

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...353.43 360.50 367.57 374.63 381.70 388.77 395.84 402.91 409.98 417.05 424.11 431.21 438.28 445.35 452.42 459.46 466.55 473.62 480.69 487.76 494.80 501.90 508.97 516.04 523.11 530.14 Cubic Contents of Logs Without Slabs. The two rules in use for determining the amount of square timber contained in round logs are the Two-thirds Rule and the Inscribed Square Rule. THE TWO-THIRDS RULE. The diameter of the log is taken at its middle point or the diameters of the two ends of the log are averaged. The diameter of the log is reduced one-third to allow for slab and the remaining two-thirds is taken as the width of the square piece which may be hewn or sawn out of the log. The cubic contents of the squared log are then obtained by squaring this Width and multiplying by the length of the log. This rule gives smaller results than the Inscribed Square Rule, which shows the contents of a square piece that may be exactly inscribed in a cylinder of the same diameter as the log. In support of the Two-thirds Rule it is claimed that there is a certain amount of waste, due to the fact that logs are seldom perfectly round and straight, and that the rule makes approximately the correct allowance for such irregularities. The Two-thirds Rule is sometimes called the Big Sandy Cube Rule. Length in feet. 10-... 12.... 14.... 16.... 18.... 20.... 22.-.. 24.... 26.... 28.... 30.... 32.... 34.... 36.... 38..j.-40..-. 42.... 44..-. 46.... 48.... 50.... 52..-. 54.... 56.... 58.... 60.... 62.... 64.... 66.... 68.... 70.... 72-... 74..-. 76.... THE INSCRIBED SQUARE RULE. This rule gives the cubic contents of square pieces which can be exactly inscribed in cylinders of different sizes. The wi: dth of this square piece is usually obtained by multiplying the diameter of the..show more

Product details

  • Paperback | 24 pages
  • 189 x 246 x 1mm | 64g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 123684243X
  • 9781236842435