Mechanics of engineering (solids) : comprising statics and kinetics of solids, and the mechanics of the materials of construction, or strength and elasticity of beams, columns, shafts, arches, etc. : for use in technical schools (1911)
Church, Irving P. (Irving Porter), 1851-1931 · New York : Wiley ; London : Chapman & Hall · leaf 56
blem 5.—Roof-truss; pin-connection ; all loads at joints;wind-pressures W and TF, normal to OA; required the threereactions or supporting forces (of the two horizontal surfacesand one vertical surface), and thestress in each piece. All geomet-rical elements are given; also P,P.,P„Tr(Fig. 40). 38.… … Fia. ist. the angles made by their lines of application with X^ Y^ and Z, 38 MECHANICS OF ENGINEERING. Considering the first force* P„ replace it by its three com-poneiits parallel to the axes, X^ = P, cos a^^ Y^ = P^ cos /<,;and Z, — P, cos y^ {Pi itself is not shown in the figure). AtO, and…
Mechanics, Applied · Strength of materials
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