 | Warren H. Sadler - 1888 - 426 σελίδες
...times 15, or 30 board feet. Rule. — I. Multiply the length in feet by the width in feet. Or, II. Multiply the length in feet by the width in inches, and divide the product by 12. NOTE.— If more than 1 in. thick, multiply the result obtained by the rule by the thickness in inches.... | |
 | Caton's national business college, Buffalo, N.Y. - 1889 - 330 σελίδες
...times 15, or 30 board feet. RULE. — I. Multiply the length in feet by the width in feet. Or, II. Multiply the length in feet by the width in inches, and divide the product by 12. NOTE. — If more than 1 in. thick, multiply the result obtained by the rule by the thickness in inches.... | |
 | Warren H. Sadler, William Russell Will - 1890 - 316 σελίδες
...times 15, or 30 board feet. KULE. — I. Multiply the length in feet by the width in feet. Or, II. Multiply the length in feet by the width in, inches, and divide the product by 12. NOTE. — If more than 1 in. thick, multiply the result obtained by the rule by the thickness in inches.... | |
 | John Groesbeck - 1891 - 426 σελίδες
...etc., is measured in even inches, odd inches not being counted. 473. To measure boards. Rule J. — Multiply the length in feet by the width in inches, and divide the product by 12 ; the quotient will be the number of square feet. When the board is more or less than 1 inch thick,... | |
 | Horatio Nelson Robinson - 1892 - 428 σελίδες
...measure, hewn and round timber in cubic measure. RULE. — I. When lumber is not more than 1 inch thick, multiply the length in feet by the width in inches, and divide the product by 12. II. When it is more than 1 inch thick, multiply the length in feet by the width and thickness in inches,... | |
 | Horatio Nelson Robinson - 1892 - 428 σελίδες
...measure, hewn and round timber in cubic measure. RULE. — I. WJien lumber is not more than 1 inch thick, multiply the length in feet by the width in inches, and divide the product by 12. II. When it is more than 1 inch thick, multiply the length in feet ly the width and thickness in inches,... | |
 | Edward Brooks - 1893 - 228 σελίδες
...wherever they may see them, and also obtain correct ideas of planks, joists, scantling, etc. RULE.—1. To find the contents of a board., multiply the length in feet by the width in inches, and divide by 12. 2. To find the contents of a plank, joist, etc., multiply the length in feet by the width and... | |
 | John Williston Cook, Nebraska C. Cropsey - 1893 - 316 σελίδες
...9 = 11J (board feet). To find the number of feet of lumber in a board 1 inch or less in thickness : Multiply the length in feet by the width in inches and divide the product by 12. 2. How many feet of lumber in a board 20 feet long and 10 inches wide ? How many in a board 16 feet... | |
 | Oscar F. Williams - 1894 - 332 σελίδες
...surface, one inch thick, called a board foot. 420. To Find the Number of Board Feet in a Board. Rule.— Multiply the length in feet by the width in inches, and divide by 12; the quotient inll be the number of square feet. REMARK. — If the "board tapers evenly, find... | |
 | Edward Brooks - 1895 - 430 σελίδες
...as masts, etc., is estimated in cubic feet ; hewn timber, as beams, etc., either in board or cubic feet. Rule. — I. To find the contents of a board,...the width in inches, and divide the product by 12. II. To find the contents of a plank, joist. etc., multiply the length in feet by the width and thickness... | |
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RULE. — Multiply the length (in feet) by the width (in inches) and divide the product by 12 — the result will be the contents in square feet. 
