ICE - Institution of Civil Engineers - Virtual Library

Proc. Insm Ciu. Engrs, Part 1,1988,84, June, 4 7 5 4 9 5 9099 GROUP TRANSPORTATION ENGINEERING Coral as an aircraft pavement materialcase histories C . STEVENS, MSc, MIGeol, DIC* B. G. VERRALL, MA, MICE* Coral deposits are the only sources runway construction materials on the atoll Tarawa of of of in Kiribati, in the South Pacific. This Paper describes a study these materials carried out as part of an evaluation of runway upgrading requirements at Bonriki Airport on the atoll...

STEVENS ON ECONOMY THROUGH LABOUR PRODUCTIVITY AND INCENTIVE SCHEMES 97 RAILWAY ENGINEERING DIVISION MEETING 13 November, 1951 JOHN CUMBERLAND LANDALE TRAIN, M.C.,M.I.C.E., Chairman of the Division, in the Chair A discussion on the subject of " Economy i RaiIway Civil Engineering " n was initiated by four Introductory Notes and, upon the motion of the Chairman, the thanks of the Division were accorded to the Authors. Introductory Notes : (1) " Economy through Labour Productivity and Incentive Schemes." By G...

9G DISCUSSION ox SISGLE-PIIASE ELECTRIC THACTIOS. [blinutes of The Author. in which the prices had been cut to the lowest limits. The Author could not accept newspaper accounts of the preliminary designs of thc London, Brighton and S0ut.h Coast Railw-ay equipment as representing the best practice. The Siemens motor had what might be regarded as separate windings for forward and backward running, and consequently only needed the two contactors shown. There would appear to be no difficulty in passing under a girder-bridge 2 inches above the loading-gauge...

Proc. Instn Civ. Engrs, Part 1,1989,86, Dec., 1167-1 175 TRANSPORTATION GROUP ENGINEERING 9099 DISCUSSION Coral as an aircraft pavement material-case histories C. Stevens and B. G . Verrall Mr D. Newill, Transport and Road Research Laboratory Few papers have been published on the use of coral as a construction material, either for roads or airfield pavements. This Paper, therefore, which deals with the formation and properties of coral as well as its performance in an airfield pavement, is a valuable addition to available information...

14 ON AVOIDING VISIBLE SMOKE Mr. WOOIXOCK regretted, that the data relative to 6he consumption of fuel werescarcelysufficientlycomplete, to enable him to state the exact amount of steam evaporated in a given time and with a certain expenditureof coal, with his apparatus. The difficulty arose from there not having been any record kept of the previous consumption of fuel and of work done, previously to the application of the new system, which had, at Messrs. Meux and Co.'s brewery, been adapted towhat was called a U 25 barrel, or 900gallon boiler," and the only point of comparison, was with a smaller boiler, burning anthracite coal, and used only for the purpose of supplying boiling water, or liquor, as it was technically called...

86 CORRESPONDENCE ON THE TATA-HYDRO-ELECTRIC [Minutes of Dr. Bripht- course, would have increased the loss in friction, increasing, in fact mare. the 66 feet lost to about 90 feet, but the loss in the pipe transmission would still only be about 5 per cent., while the consequent reduction in size of the pipes would materially reduce their Cost. It would be very interesting to know whether the reason for fixing upontllatparticular velocitywas that it W R S considered that a higher velocity might give difficulty in its control, or whether it was that the sizes of the pipes were increased until the interest on theadditionalcapitaloutlay balanced the income derivablefrom the extra power thus rendered available...

33s CORBESPONDENCE ON [Minutes of Correspondence. Mr.. duderson. of works of greatimportance, was alltooshort,andmany would lament the lack detail, especiallyas regarded troubles experienced. of He wished to ask why the construction of the Talarn dam was not carried continuously. on The figures for overall efficiency given on p. 300 presumably referred t o the Canlarasa installation, and were stated to be " confirmed by individual plant and machine trials,'' though it was not always clear to which power-house the Author referred. I thetrials were actuallycarriedoutonthe f to know exactly how the quantity of site, it wouldbevaluable water discharged fromtheturbines wasmeasured...

228 DISCUSSION ON BRIQUETTE-FUEL. [Minutes of Discussion. &h.Giles. Dr. Pole. Mr. A. GILES, President, he quite said was sure thatthe members woulddesireto accord a hearty vote of thanks to the Author for having introduced a new and interesting subject of discussion. He had the opportunity, twenty-five yearsago, of seeing how the process of briquette-making was carried out. According to the description given in the Paper, there were briquettes and briquettes. Many were so liable to smoke when burned that they were very offensive tothe people using them...

DISCUSSION ON ECONOMY IN RAILWAY CIVIL ENGINEERlNG 143 Discussion Y F. E. Campion, referring to Introductory Note No. 1, observed r that it might be of some interest to give an account of the effect of the incentive schemes which Mr Stevens had advocated and which had been putinto force fairly extensively on the Southern Region. The first scheme had been started about 5 years ago in a concrete depot. It had been very successful, and hadnow been extended to all the manufacturing and supply depots in the department. The total number of staff involved was upwards of 550,in four differentcentres...

IN TRACK MAINTENANCE AND RENEWAL 21 ACKNOWLEDGEMENTS The Author wishes to express his thanks to the Railway Executive and to Mr A. S. Quartermaine, &LC., C.B.E., Vice-president I.C.E., Chief Engineer of British Railways (Western Region), for permission to present the Paper. The Paper is accompaniedby eleven photographsand one sheet of drawings, fromwhich the half-tone page plates and the Figures in the text have been prepared. Discussion The Author introduced the Paper with the aid slides. of a series of lantern M M...