Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 588
Fis. 354. <- o Fig. 355.A and B, and let P and Q represent the magnitude of the forcesat the pins. If the bar is in equilibrium, the forces must beequal and opposite, and must act along the bar. The action ofthese forces is called a stress. GRAPHIC STATICS 567 … JVofc.—The weights of the bars are not taken into account, A convenient method forindicating the forces in stressdiagrams is shown in Fig.356, and is called HenrictsNotation. Let P, Q, R, and S repre-sent forces acting at the point0, and A, B, 0, and D thespaces between the forces.Then the force OP…
Geometrical drawing
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