{"title":"Some Notes on the Karun River and the Shatt e1 Arab","authors":"G. Binnie","doi":"10.1680/IJOTI_1950_12864","DOIUrl":"https://doi.org/10.1680/IJOTI_1950_12864","url":null,"abstract":"","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"52 360 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126158874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of Tidal Phenomena in the Clyde Estuary, using a Scale Model†","authors":"A. Thom","doi":"10.1680/IJOTI_1950_12860","DOIUrl":"https://doi.org/10.1680/IJOTI_1950_12860","url":null,"abstract":"1. Summary:- The model was built in the James Watt Engineering Laboratories, Glasgow University. The horizontal and vertical scales were 1 in 5280 and 1 in 115 respectively, giving a vertical exaggeration of 46. The time scale was 1 in 493, which gave the period of a 12 hours and 25 minutes tide as 90.3 seconds in the model. The model was non-mobile, the bed being constructed of cement and sand mortar. In order to have conditions at the mouth of the estuary as representative as possible, the deep sea lochs were included. Details for these were obtained from the Admiralty Charts, and the Engineer of the Clyde Navigation Trust granted access to tide curves and recent cross sections of the estuary. Tides, varying in the correct spring-neap cycle, were produced by a displacer, which was given the correct motion by mechanism designed on the principle used by Lord Kelvin in his tide predicting machine. Tide curves were taken at various points on the estuary model by a gauge using reflected light, and the effects of spates and land reclamation-were-investigated. In addition, the following items were studied:- (a) Increase of range of the tide as the tidal wave travels inland. (b) The velocity of the tidal wave. (c) The hump on the front of advancing wave. (d) Some current velocities. (e) The natural period of oscillation of the estuary. (f) Harmonic analysis of the tide curves. (g) Frictional damping of the natural oscillation. (h) The mean level of water in the estuary at various points. (i) Profiles of the surface of the water in the estuary. Wherever possible, comparisons were made throughout with the full scale estuary.","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125733631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Use of Bitumen in Hydraulic Works","authors":"C. Dobbie, E. J. R. Kennerell","doi":"10.1680/IJOTI_1950_12865","DOIUrl":"https://doi.org/10.1680/IJOTI_1950_12865","url":null,"abstract":"","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129430267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"FUNDAMENTAL PROPOSITIONS IN THE PLASTIC THEORY OF STRUCTURES.","authors":"M. Horne","doi":"10.1680/IJOTI.1950.12895","DOIUrl":"https://doi.org/10.1680/IJOTI.1950.12895","url":null,"abstract":"Synopsis According to the plastic theory, the collapse load of a ductile structure in the absence of instability due to axial stresses may be predicted by reference solely to the requirements of statical equilibrium. Since it is found unnecessary to consider the behaviour of the structure during the increase of the load to the collapse value, the assumption that the plastic theory will, in all cases, lead to a correct estimate of the collapse load and the mode of failure demands a rigorous proof. That assumption is vindicated in this Paper by reference to four formal propositions which are of fundamental importance in the plastic theory of structures.","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"31 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"THE BEARING CAPACITY OF SCREW PILES AND SCREWCRETE CYLINDERS.","authors":"G. Wilson","doi":"10.1680/IJOTI.1950.12901","DOIUrl":"https://doi.org/10.1680/IJOTI.1950.12901","url":null,"abstract":"Summary This Paper describes an investigation which included model-experiments and full-scale loading tests on screw piles and cylinders, observations on the settlement of piles in actual structures, the derivation of a theory of bearing capacity, a check on the relationship between the driving torque and the bearing capacity of the pile, and the formulation of design rules. Two important factors, the first of which does not appear to have been appreciated previously, emerge from this investigation: they are that the value of the coefficient of earth-pressure at rest is a critical factor in the bearing capacity of structures founded in a frictional medium, and that the effect of screwing a cylinder with a closed nose into dense sand is to raise the horizontal earth-pressure considerably and so to effect a very large increase in the bearing capacity.","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125317107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A METHOD OF DETERMINING THE SECONDARY STRESSES IN CYLINDRICAL SHELL ROOFS.","authors":"W. T. Marshall","doi":"10.1680/IJOTI.1949.12936","DOIUrl":"https://doi.org/10.1680/IJOTI.1949.12936","url":null,"abstract":"Synopsis. The membrane theory for the stresses in thin shells is based on the fundamental assumption that there is no change of shape of the shell on loading. In shell-roof construction, however, there must be a deflexion of the edge tie-beam, with resultant secondary stresses in the shell. Some solutions have been given for this problem (outstanding being those of Dischinger, Finsterwalder, Schorer, and Jenkins), but many of them are very difficult to follow and are of doubtful value to engineers because of the lack of numerical examples. The first part of this Paper is devoted to a summary of the work of those previous investigators. Dischinger's solution of the problem shows that the longitudinal stress-distribution in the cylindrical portion of the shell is almost equal to that obtained by considering the complete shell as a beam spanning between the columns at the gable ends. The Author has utilized this stress distribution as a means of determining the constants of integration in Schorer's method of...","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114266051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"COMPACTION OF SOILS.","authors":"F. P. Williams","doi":"10.1680/IJOTI.1949.12931","DOIUrl":"https://doi.org/10.1680/IJOTI.1949.12931","url":null,"abstract":"Synopsis. Soil compaction is the process whereby soil is mechanically compressed through a reduction in the air voids. It is measured in terms of the dry density or amount of solid matter in unit volume. Soils range in dry density from about 140 lb. per cubic foot for coarse-grained gravels and sands to about 90 lb. per cubic foot for heavy clays. For a constant amount of compaction, all soils have an optimum moisture content at which a maximum dry density is obtained. The leboratory tests used to determine the compaction characteristics are described in this Paper and factors affecting their results are discussed. In the field, compaction is effected by different types of roller, rammer, or vibrator. The results of full-scale investigations which have been made at the Road Research and sheepfoot rollers, a frog rammer, and vibrating plant, are discussed. The main Laboratory of the compaction of five British soils by smooth-wheel, pneumatic-tired, conclusions are that:— (l) There is an optimum moisture co...","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"162 15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116802732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Design of Reinforced-Concrete Piles, with Special Reference to the Reinforcement.","authors":"B. P. Saurin","doi":"10.1680/IJOTI.1949.12979","DOIUrl":"https://doi.org/10.1680/IJOTI.1949.12979","url":null,"abstract":"","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"514 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116207314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Use and Maintenance of Civil Engineering Plant on Railway Work.","authors":"A. Ticehurst","doi":"10.1680/IJOTI.1949.12973B","DOIUrl":"https://doi.org/10.1680/IJOTI.1949.12973B","url":null,"abstract":"","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115318814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Problem of Airfield Design in Relation to Aircraft Design.","authors":"C. Foster","doi":"10.1680/IJOTI.1949.12995","DOIUrl":"https://doi.org/10.1680/IJOTI.1949.12995","url":null,"abstract":"","PeriodicalId":318258,"journal":{"name":"Journal of The Ice","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134254052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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