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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 ...Show synopsisThis 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. 1919 Excerpt: ...the facilities for measurement, and the extremely rare opportunities for measuring great floods are thereby sometimes lost. On the other hand, rainfall measurements are far more widely distributed, have been continued for a much longer period, and in general may be regarded as more reliable than flood measurements of streams, on account of their greater simplicity. For these reasons we are often compelled to rely more upon rainfall records than upon measurements of runoff for estimating the magnitude of floods for which we must provide spillway capacity. A study of the longest available rainfall records shows that it is possible here and there to select consecutive periods of a half century or so which contain no excessive precipitation approaching that shown by other parts of the same record. It is seldom, however, that a period is found in which the maximum of iooo years exceeds very much that shown by any period of 100 or 200 years. Professor Kuichling has compiled and published a list of high discharges from which the most extreme floods have been selected and condensed into a table along with other data, which are given in the last chapter of this book. 7. Outlet Works.--One of the most vulnerable features of an earthen dam is the provision for drawing water from the reservoir through or past the dam. The danger consists in the fact that unless elaborate precautions are taken, the conduit presents a convenient path for the percolation of water, which may carry earth with it, and gradually enlarge the opening until a breach is made and the dam destroyed. The outlet conduit is generally of concrete although cast-iron pipe is sometimes used for small reservoirs. In a few cases wooden conduits have been provided, but this is bad practice, as any decay at o...Hide synopsis
Description:Fair. No Jacket. 8vo-over 7¾"-9¾" tall. Blue-black cloth boards,...Fair. No Jacket. 8vo-over 7¾"-9¾" tall. Blue-black cloth boards, gilt and blind stamps. Definite edge wear and rubbing to boards with a scrape across front cover leaving a short tear. Front hinge starting. Text block is square, clean and tight. Previous owner's names on front pastedown. Writing to FFEP in pencil, pricing in pen. Some pencil underlining and marginalia.
Description:Good. No Jacket. Ex-Libris. 8vo-over 7¾"-9¾" tall. Cover corners...Good. No Jacket. Ex-Libris. 8vo-over 7¾"-9¾" tall. Cover corners and spine bumped and slightly worn. Text loose slightly from cover and text is browning.
Description:Book Fair/NONE. Reading copy. Hinge split at FFEP. Cover very...Book Fair/NONE. Reading copy. Hinge split at FFEP. Cover very worn. 6th edition. Binding is 7, 000 issued.
Description:Vg- 8vo. Pages are browning. Water stains on front and back end...Vg- 8vo. Pages are browning. Water stains on front and back end covers. Cover is bumped and well worn. Writing on front end page. `
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