Easy Rules for the Measurement of Earthworks: By Means of the Prismoidal FormulaT.R. Gallender & Company, 1872 - 189 páginas |
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altitude apply Arithmetical Mean base Borden calculations centre hights centre line Chapter Chauvenet's Theorem common length correct Cubature Cubic Feet Cubic Yards diagram diedral angle dimensions distance apart sections double areas Double Interval earthwork solid end areas engineer equalizing line Equivalent Level Hights example feet in length figures frustum Geom Geometrical Mean gonals Grade Prism grade triangle ground line ground surface Hight of Back hights and widths horizontal Hutton's General Rule illustration intersection of slopes irregular John Macneill mensuration method of computation odd numbers plane prismoid of earthwork Prismoidal Formula Prismoidal Mean Area Professor Gillespie rectangles rectangular prismoid regular stations Rhomboidal Wedge right section road-bed Roots and Squares side-slopes Simpson's Rule smaller end section Square of sum square roots stations of 100 superposed wedge suppose Surf.-slope Table Tabulated tion trapezium trapezoidal triangular prism triangular prismoids usually vertical volume Wedge and Prism writers
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Página 1 - Wood-Cuts, Problems, and Examples, and concluded by an Extensive Table for finding the Solidity in cubic yards from Mean Areas. The whole being adapted for convenient use by Engineers, Surveyors, Contractors, and others needing Correct Measurements of Earthwork.
Página 12 - RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity.
Página 66 - ... the method of your solution. SOLID GEOMETRY. 1. Define a straight line perpendicular to a plane, and prove that when a straight line is perpendicular to two straight lines drawn through its foot in a plane, it is perpendicular to the plane. 2. Prove that, if two solids have equal bases and heights, and if their sections, made by any plane parallel to the common plane of their bases, are equal, they are equivalent.