... Angeles seemed to indicate that torender concrete absolutely impervious to water was impracticable, if not impossible. The tests, which had been made wibh variousmixtures and samples 90 days old, with a wide range of water-content, showed a reduced permeability corresponding t o an increase in densityand...

... RESISTANCE BONDS TENSION BEAMS BENDING MOMENTS WATERTIGHTNESS WATERTIGHT WATERPROOFING PERMEABILITY OIL PROTECTION COATINGS LABORATORIES PERCOLATION SLABS SHIPBUILDING PERCOLATION VESSELS WAR ISLECTIONS. 225 11 Janmry, 1921. J O H N ALEXANDER BRODIE, President, in the Chair...

... SHIPS CONSTRUCTION SHIPBUILDING TESTS WATERPROOFING BEAMS STRENGTH ABSORPTION PERMEABILITY WATER VESSELS WAR BARGES TUGS STRESS TENSILE REINFORCEMENT CRUSHING TESTING SLABS WEIGHT STEEL FAILURES ...

... hypothesis, a tight water-face. Such analyses were of value when the hypotheses agreed with facts : hence they too applied to dams having tight water-faces. But masonry was, from the nature of its materials, more or less permeable, and its permeability was often increased by unworkmanlike methods. Frequently...

...J A EWING MAGNETISM MAGNETS TELEGRAPHY COMPASSES ELECTRICITY CIRCUITS DYNAMOS IRON ORES INSTRUMENTS TEMPERATURE PERMEABILITY HYSTERESIS © Thomas Telford and ICE 1899 Extra Meeting.] EWING ON MAGNETISM. 289 EXTRA MEETING. 20 April, 1899. WILLIAM HENRY PREECE, C.B., F.R.S...

...J A EWING © Thomas Telford and ICE 1896 MAGNETIC TESTS IRON STEEL MAGNETISM RODS INDUCTION MEASUREMENT FORCES PERMEABILITY HYSTERESIS BALLISTICS TESTING TRACTION BARS YOKES METALS ELLIPSOIDS MAGNETOMETERS MAGNETS CASTING TRANSFORMERS ELECTRICITY Proceedings.] EWING...

...-carbonsteels may also be increased byannealinganddiminishedbytempering,andthat of wrought-iron or steel is diminished by mechanical strain ; the loss of permeability resultingfrom mechanical strain may, however, be restored by annealing. The curves A, B and C, Fig.2, show the'results of tests upon a particular...

... withoutaninfinite amount of trouble and pains in obtaining the datafor the different curves. Professor EWINGexhibited two instruments, referredto in the Prof. Ewing. Paper, designed with the object of making hysteresis and permeability tests ian manner much more expeditious, and therefore better suited for workshop...

...W SMITH © Thomas Telford and ICE 1892 INFLUENCE SEA WATER PORTLAND CEMENT MORTAR CONCRETE HARBOURS DETERIORATION DOCKS DAMAGE CHEMICAL ACTION TESTS PERMEABILITY PRESSURE BLOCKS BRIQUETTES FAILURES MIXING MIXTURES SPECIFIC GRAVITY INGREDIENTS GRAVING ABERDEEN...

... of the induction to the magneticforce is called the permeability. The Manchester dynamo, the construction of which is shown in Fig. 15, is a well-known type, introduced by Messrs. Mather and Platt. Clerk Maxwell, Electricity and Magnetism, vol. ii. $5 398,428 ;Cumming, 208,214. APPLICATIONS ELECTRICITY...

...P W BARLOW © Thomas Telford and ICE 1855 WATER BEARING STRATA BASINS GEOLOGY CHALK WATER SUPPLY CLAYS ARTESIAN WELLS SPRINGS PERMEABILITY RAINFALL DISCHARGES RIVERS DRAINAGE SOLUBLE LIME QUICK LIME GREENSAND LONDON CLAY WEALD WEALD CLAY GAULT CLAY STRATIFICATION...