Principles of Economy in the Design of Metallic Bridges;
Principles of Economy in the Design of Metallic Bridges;
Bender, Charles B. [from Old Catalog]
The book Principles of Economy in the Design of Metallic Bridges; was written by author Bender, Charles B. [from Old Catalog] Here you can read free online of Principles of Economy in the Design of Metallic Bridges; book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Principles of Economy in the Design of Metallic Bridges; a good or bad book?
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21, PI IV.). For 2 = V'A,' + A' + ^1 • A, the minimum is M. Sl = XVh: For A, = A, there is £r = A, . 1/3, and 5/ min. = 3.46J/. Or The maximum moment Mior cantilevers of extraordinary spans, of which the permanent weight is very great near the main-posts, is at the best |/^. If the middle span were one half of the whole span, the moment M would always be less Digitized by Google Sec. 2 1 .] UTILIZA TION OF ANCHOR A GE^MA TERIAL. 8 5 3 • 3 than g-pd^- Even if ^pa^ were taken as a basis of calcul...ating the strain-lengths of the anchorages of cantilever-bridges, the coefficients of these strain-lengths would still be very considerable, as compared with those for Whipple bridges. We find for arrangements : abed SI = pa^ X 2.12 3.00 4.24 2.60 .... (35) This result confirms the remark at the end of § i6. §21. utilization of Anchorage-Material for Short Outside Spans of a Cantilever-Bridge. The anchorage of a cantilever with back-struts may be utilized to build a small outside span. CF of Fig.
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