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The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)

Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 490

An illustration from The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others, 1880, leaf 490
t of 2. SIDE AND AREA OF HEXAGON. 447 By referring to the figure it will be seen that the radiusof the inscribed circle equals half a side of the square— (•35-) The area of the square equals the square of a side— A^b\ (136.) 435. — Hexagon: Radius of Circumscribed and In-scribed Circles: Area.—Let… … Fig. 289. hexagon into six equal triangles w^ith their apexes converg-ing at G. The six angles thus formed at G are equal, andsince their sum about the point G amounts to four rightangles {Art. 335), therefore each angle equals -f or | of aright angle. The sides of the six triangles radiating from…

Carpentry · Architecture · Building

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More pictures from The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others

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