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 591
The dotted lines in the lower part of the polygon sliow theforces for the opposite end of the framework. 570 SOLID GEOMETRY Peoblem 305. To determine the forces aeting on the hars and pins formingthe framework PQEST. Fig. 360. Let the framework be supported at the points P and T, andlet the weight… … Fig. 360. P, Pt, and T, perpendicular to PT. At any point L on the linefrom P draw LN parallel to 0&. Draw NM parallel to Oa, andjoin LM. Draw Oc parallel to LM. The funicular polygon enables us to determine the magnitudeof the forces BC and CA acting at the points P and T : i.e. theforce db…
Geometrical drawing
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