Instructions on Modern American Bridge Building by G. B. N. (George Bates Nichols) Tower
page 57 of 57 (100%)
page 57 of 57 (100%)
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II, and words in the last paragraph of the page.
8. Page 14--Three typos found: 'dimensiens' for 'dimensions', 'betng' for 'being', and 'ars' for 'are'. 9. Page 17--a value in a formula was printed as 6000, but in the context of the other information, particularly the example immediately following, the value was believed to be incorrect, and was changed to 5000. 10. Page 23--The value of 388 sq. inches at the top of the page in the book is incorrect; 3 x 8 x 12 = 288, so has been corrected. 11. Page 24--Rods section, numerical value appeared to be 15.000 in the book, but from context, must be 15,000 instead. 12. Page 28--Typos: changed 'Trautwine's Edgineer's Pocket-Bood' to Trautwine's Engineer's Pocket-Book'; corrected 'af' to 'as', 'bracas' to 'braces'. 13. Page 30--Apparent typo in the table at the bottom of page. Value for Center Brace size for 200' span was shown as '8 x 1', believed from context of table to be '8 x 10'. 14. Page 33--table of dimensions of a Pratt Truss, last column, row starting with 150, the original says 8--1-1/8, this is believed to be, and has been changed to, 3--1-1/8. 15. Page 37--The five formulas with square roots were incorrectly printed in the book, multiplying the terms inside the square root instead of adding them, which is obviously incorrect per the Pythagorean theorem of right triangles. 16. Page 38: The fifth ratio in the group of five near the top of the page must start with 20, not 10 as in the book 17. Page 38--The equation for W as printed on this page is not consistent with that found on pages 18 to 24, so has been corrected from 'bd^2' to 'bd^3'. 18. Page 39--arch brace truss table heading typo-changed 'FOE' to 'FOR'. |
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