PRACTICAL SYSTEM OY MENSURATION AND GAUGING. BY MICHAEL WALSH. BOSTON: CHARLES J. HENDEE, AND G. W. PALMER AND COMPANY. 1838. DISTRICT OF MASSACHUSETTS-to wit: BE IT REMEMBERED, That on the twenty-seventh day of September, A. D. 1826, in the fifty-first year of the Independence of the United States of America, MICHAEL WALSH, of the said District, had deposited in this Office the Title of a Book, the Right whereof he claims as Proprietor, in the words following, to wit: "A PRACTICAL SYSTEM OF MENSURATION AND GAUGING, BY MICHAEL WALSH." In conformity to the Act of Congress of the United States, entitled, "An Act for the Encouragement of Learning, by securing the Copies of Maps, Charts, and Books, to the Authors and Proprietors of such Copies, during the times therein mentioned;" and also to an Act, entitled, "An Act supplementary to an Act, entitled, An Act for the Encouragement of Learning, by securing the Copies of Maps, Charts, and Books, to the Authors and Proprietors of such Copies, during the times therein mentioned; and extending the benefits thereof to the Arts of Designing, Engraving, and Etching Historical and other Prints." JOHN W. DAVIS, Clerk of the District of Massachusetts. MENSURATION. BOARD AND TIMBER MEASUKE. When the length of a board or plank is in feet, and the width in feet, multiply them for the content in feet. When the length is in feet, and the width in inches, multiply the length by the width, and divide the product by 12 for feet. When the length of timber or joist is in feet, and the side or sides in inches, multiply the product of the sides by the length, and divide by 12 for feet, board measure, or by 144 for solid or cubic feet. If the length be taken in inches, divide by 1728 for cubic feet. EXAMPLES. 1. In a board or plank 19 feet long, and 2 feet wide, how many feet? Ans. 38 feet. 2. In a board or plank 23 feet long, and 17 inches wide, how many feet? 23 17 161 23 12)391 32 7 Ans. 32 feet 7 inches. 3. How many feet in a joist, 8 inches square and 30 feet long? 4. What is the content of a piece of timber, 40 feet long and the sides 18 by 21 inches? ft. in. or 40 0 at 12 inche 18 36 12)1260 feet B. M. or of Ranging timber. Ans. 105 cubic feet. 5. What is the content in board measure of a joist 25 feet long, and 4 by 3 inches? 4X3-12 inches or one foot, 25×1=25. ft. the answer. In this case the length is the content. 6. How many cubic feet in a stone, 10 feet long, 5 feet 3 inches wide, and 1 foot 9 inches thick? 5 363 ins. by Duodecimals by the quarter girt 19-21 10 6 126 inches True content 96 ft. 5 inches. False content 128 71, being 32 feet too much. Feet 128 71 |