Good Roads
Title | Good Roads PDF eBook |
Author | |
Publisher | |
Pages | 330 |
Release | 1913 |
Genre | Roads |
ISBN |
Vampire Hunter D Volume 14: Dark Road Parts 1 & 2
Title | Vampire Hunter D Volume 14: Dark Road Parts 1 & 2 PDF eBook |
Author | Hideyuki Kikuchi |
Publisher | Dark Horse Comics |
Pages | 328 |
Release | 2012-10-09 |
Genre | Comics & Graphic Novels |
ISBN | 1621155005 |
D has crossed over the southern border, into the domain of the cruelest and most evil of the royalty, General Gaskell. On the way, he picks up a "victim" — one of few survivors in the villages-and makes way with her and the Deliverers. Along the way, he is attacked by the Drowned, and fights many more unspeakably horrible enemies. All of this suggests that Gaskell — who was supposed to have been put to death under the light of the sun — is still very much alive. But why? * Features twelve black-and-white line illustrations by Yoshitaka Amano.
Good Roads, Vol. 14
Title | Good Roads, Vol. 14 PDF eBook |
Author | |
Publisher | Forgotten Books |
Pages | 354 |
Release | 2015-07-21 |
Genre | Reference |
ISBN | 9781331939153 |
Excerpt from Good Roads, Vol. 14: A Weekly Journal of Road and Street Engineering and Contracting, New York, July 7, 1917 This paper presents the results of a study of the standard toughness test for rock, which has recently been made in the laboratory of the U. S. Office of Public Roads and Rural Engineering. The test was introduced into the United States about 15 years ago by Logan Waller Page, who was at that time director of the road material laboratory of the Massachusetts Highway Commission. It was made a standard of this society in 1908 and has been in very general use in highway testing laboratories throughout the country since that time. The general principles involved are given in the standard. A detailed description of the method employed in the government laboratory has likewise been published; hence, a description of the test will not be given here. In general, it has been considered very satisfactory for the purpose for which it was designed, that is, to measure the relative resistance to impact of road building rock. Certain discrepancies have been noted recently, however, between tests made in the same laboratory on samples from different portions of a rock quarry, as well as between tests made by different laboratories on apparently identical material. These discrepancies would seem to indicate that the variations in the physical properties of rock from the same quarry may be much greater than has been heretofore considered probable, and also that the method of conducting the test is perhaps not sufficiently controlled under the present standard to insure check results in all cases. In order to obtain some quantitative preliminary data regarding the second point, a cooperative set of tests was recently made by five road material testing laboratories. The toughness of the same apparently homogeneous sample of trap rock was obtained independently by each laboratory, four determinations of the toughness being made in every case but one. The results obtained are shown in Table I. The large variations shown demonstrate the need of an investigation of the possible cause of the discrepancies with the view of obtaining data to be used as the basis for the formulation of a revised standard. An analysis of the methods now used in making the toughness test shows that discrepancies in results may in general be traced to either (1) the fact that the range in physical properties of the quarry product is so great that it is impossible to obtain an average value for the toughness of the material with the small size and number of test specimens used in a given determination, or (2) to the fact that certain variables may be introduced during the preparation or testing of the specimen which might affect the result and which are not controlled by the present standard. These considerations are of course entirely distinct from any question of the value of a test for impact, as an indication of the suitability of rock for road building purposes. A comprehensive consideration of the variables affecting the accuracy of the test must include a study of the following: Variations in Toughness of Rock from Same Quarry A determination of the probable extent of this variation is very important for obvious reasons. For instance, there is a general impression current among those interested commercially in the production of stone for road work, that the results of a single test, made perhaps several years before, are sufficient from which to judge the quality of a rock quarry. Likewise, in sampling rock for test, it is usually thought sufficient to take a single sample without any particular care being exercised to insure having it represent the only kind of material which it is proposed to use. The results of a few tests of samples from a number of well known quarries, which have been in operation for some years, are given in Table II, and show the wide range in toughness which it is possible .
The Engineering Index
Title | The Engineering Index PDF eBook |
Author | |
Publisher | |
Pages | 614 |
Release | 1921 |
Genre | Engineering |
ISBN |
Report of the Chairman of the Faculty
Title | Report of the Chairman of the Faculty PDF eBook |
Author | University of North Carolina at Chapel Hill |
Publisher | |
Pages | 950 |
Release | 1902 |
Genre | |
ISBN |
Good Roads Canada
Title | Good Roads Canada PDF eBook |
Author | |
Publisher | |
Pages | 264 |
Release | 1915 |
Genre | |
ISBN |
Motorcycle Road Trips (Vol. 14) Roads & Road Houses – Tour de Gastronomy
Title | Motorcycle Road Trips (Vol. 14) Roads & Road Houses – Tour de Gastronomy PDF eBook |
Author | Backroad Bob |
Publisher | Backroad Bob |
Pages | 34 |
Release | 2010-06-23 |
Genre | Sports & Recreation |
ISBN | 1452460515 |
Twenty-one previously published magazine articles from the Backroad Bob's Motorcycle Adventures - Roads & Road Houses CD. Roads - Eight articles covering some of the mid-Atlantic's best routes for corner carvers needing a twisty road fix to satisfy their addiction. Road Houses - Thirteen articles to make you grab your map and look for a route that links them into one tour de gastronomy.