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. 1914 Excerpt: ...=(734-61+392-61); 449=392-61+179-61. For the prismoidal correction, -20 = H(d'-d")(w"-wr) =fK2.6-8.1)(42.8-31.1) = IK-5.5)( + 11.7). For the next line, -3 = K-2.6)( + 8.7), and similarly for the rest. The "F" in the columns of center heights, as well as in the columns of "right" and "left," are inserted to indicate ...
Read More
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. 1914 Excerpt: ...=(734-61+392-61); 449=392-61+179-61. For the prismoidal correction, -20 = H(d'-d")(w"-wr) =fK2.6-8.1)(42.8-31.1) = IK-5.5)( + 11.7). For the next line, -3 = K-2.6)( + 8.7), and similarly for the rest. The "F" in the columns of center heights, as well as in the columns of "right" and "left," are inserted to indicate fill for all those points. Cut would be indicated by "C." 25 80. Computation of products. The quantities =(a+d)uj 25 and--ah represent in each case the product of two variable terms and a constant. These products are sometimes obtained from tables which are calculated for all ordinary ranges of the variable terms as arguments. A similar table computed for 25 d'--d")w"--w') will assist similarly in computing the prismoidal correction. Prof. Charles L. Crandall, of Cornell University, is believed to be the first to prepare such a set of tables, which were first published in 1886 in "Tables for the Computation of Railway and Other Earthwork." Another easy method of obtaining these products is by the use of a sliderule. A slide-rule has been designed by the author to accompany this volume. It is designed particularly for this special work, although it may be utilized for many other purposes for which slide-rules are valuable. To illustrate its use, suppose (a + d) = 28.2, and w = 62.4; then 25, ... 28.2X62.4 27(";"/)""-U)8-. Set 108 (which, being a constant of frequent use, is specially marked) on the sliding scale (B) opposite 282 on the other scale (.4), and then opposite 624 on scale B will be found 1629 on scale A, the 162 being read directly and the 9 read by estimation Although strict rules may be followed for pointing oft the final result, it only requires ...
Read Less
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
All Editions of Railroad Construction. Theory and Practice. a Textbook for the Use of Students in Colleges and Technical Schools. by Walter Loring Webb
