Hodgson's Estimator and Contractor's Guide for Pricing Builder's Work

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F.J. Drake & Company, 1913 - Building - 269 pages
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Page 229 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) Cubic Measure 1728 cubic inches (cu.
Page 72 - A zone is a portion of the surface of a sphere included between two parallel planes.
Page 71 - Sphere is a body bounded by a uniformly curved surface, all the points of which are equally distant from a point within called the center.
Page 257 - EXAMPLES. 1. What is the solidity of an anchor ring, whose inner diameter is 8 inches, and thickness in metal 3 inches ? 8-1-3 = 11: then, 11 X(f)2X 9,8696 ^244,2726, which expresses the solidity in cubic inches.
Page 218 - To Compute the Number of Slates of a Given Size Required per Square Subtract 3 inches from the length of the slate, multiply the remainder by the width and divide by 2. Divide 14,400 by the number so found and the result will be the number of slates required.
Page 216 - ... be built solid throughout the space between straight lines drawn on each side of the wall and joining the thickness at the base to the thickness at sixteen feet below the top...
Page 79 - To find the solidity of the MIDDLE FRUSTUM of a parabolic spindle.
Page 50 - As 360 degrees is to the number of degrees in the arc of the sector, so is the area of the circle to the area of the sector.
Page 61 - Take out the corresponding area in the next column on the right hand ; and multiply it by the square of the circle's diameter, for the area of the segment*.

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