Trusses And Arches Analyzed And Discussed By Graphical Methods Volume 2 by Charles Ezra Greene

Trusses And Arches Analyzed And Discussed By Graphical Methods Volume 2

byCharles Ezra Greene

Paperback | July 9, 2012

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...stresses are now known, the polygon ehk"mne gives the unknown stresses mn and ne. As the line mn is now fixed, the original webbing is restored and the remaining parts of the stress diagram drawn; hk" is produced to meet mn at k, and kl and ml are drawn parallel to KL and ML respectively to meet ck" produced at /. The remaining half of the diagram is not shown in Fig. 45. If each half of the truss and the loading upon it be equal to the other, the complete stress diagram will be symmetrical with respect to a horizontal axis through e. In the truss whose outline is given in Fig. 46 it is not possible to begin the stress diagram by considering the forces acting at the left support, since three unknown stresses hold in equilibrium /» the known reaction and half apex load. At the peak the load CC' is supported by two members whose stresses are c'? and ec in Fig. 47. The quadrilateral bccd gives the stresses in the members meeting at.the joint BCED, and c'b'd'e gives those for the corresponding joint in the right half of the truss. Passing to the joint below the peak the stress polygon is found to be ded'f. For the left support the reaction, half apex load, and the stresses bd and df are known, but one stress remains unknown. As equilibrium exists at this joint the polygon must be closed by the line fg, which is also to be parallel to FC. This completes the diagram, and by following around the Fig. 47. polygons all the stresses are found to be compression except fg, which is tension. Suppose the tie FG to be omitted. Each reaction must then be inclined in order to maintain equilibrium, its horizontal component being equal to fg. The reaction of the right support is therefore a'f (not drawn) and that of the left support fa. Prob. 35. Find...

Details & Specs

Title:Trusses And Arches Analyzed And Discussed By Graphical Methods Volume 2Format:PaperbackDimensions:34 pages, 9.69 × 7.44 × 0.07 inPublished:July 9, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217411983

ISBN - 13:9780217411981

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