Useful information for architects, engineers, and workers in wrought iron (1886)
Phoenix Iron Company · Philadelphia : Printed by J.B. Lippincott Co. · leaf 153
Area of ellipse = Transv. axis X conjug-axis X-7^54 Area of sector of circle — Arc X 2 radius Area of parabola = Base X I height Surface of sphere = Diameter2 X 3-I4J6 MENSURATION OF SOLIDS. Cylinder == Area of one end X length Sphere = Diameter3 X .5236 Cone, or pyramid == Area of base X 3… … In right-angled triangles hypoth.2 rrr base2 -J- perpend.2 base2 p= (hyp. + perp.) X (hyp.—perp.) perp.2 = (hyp. + base) X (hyp.—base) VALUE OF ANY SIDE A. B sin. a C sin. a A: Sin. b ~ Sin. c A = \/Ba + C2^2B^~cos77B A = cos. c -\- sin. r cot. a A= ^ cos. b -f- sin. £ cot. aA = B cos. c -f- B sin.…
Wrought-iron · Iron, Structural · Building, Iron and steel · Building
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