...,which was in use in Britain for many centuries, and also on the origin of Avoirdupois weight and Troy weight in Britain. With the help of this information, the Author has compiled the following shorthistories of the three pounds, viz., the Avoirdupois pound, the Roman pound, and the Troy pound, which...

...W AIRY © Thomas Telford and ICE 1909 HISTORY MEASURES WEIGHT LENGTH CAPACITY STANDARDS STANDARDISATION MEASUREMENT EGYPTIAN ROMAN PINTS AVOIRDUPOIS UNITS UK 1G4 AIRY ON THE ORIGIS OF BRITISH MEASURES [Selected SECT.11.-OTHER SELECTEDPAPERS. (Paper No. 3836...

...J MANSERGH © Thomas Telford and ICE 1901 WATER SUPPLY BACTERIA CHEMICALS WATER PURIFICATION MICROORGANISMS CONTAMINATION RESERVOIRS STONE DAMS MASONRY ANCIENT ROMAN WATERWORKS IRRIGATION RIVERS HISTORY CONDUITS AQUEDUCTS UNDERGROUND LEGISLATION ANALYSIS RAINFALL...

..., and the following calculations are based upon this proportion of water although in practice it must be far greater. Each molecule of alumina present in hydraulicmortaras thehydro-aluminate of lime can form about 12 parts of this double salt and the hydro-ferrate of lime acts in the same way. The true- Roman cements...

.... ThePaperhaddrawnattentiontothefactthat Roman cement was two-thirds the price of Portland cement, but that its strength was only one-third ; therefore it was more advantageous to usc Portland than Roman cement,. He did not notice whether theAuthorhad made any comparison between Portland cement and lias lime mortar; but as far as his...

...., and 863.6lbs., at four, five, six, and seven yearsrespectively. The results at four, five, andsixyearsare practically the same, being 62.6 percent. of neat cement, and atseven years 65 per cent. Table XXIV. gives the strength of Roman cement at various stages fromseven days toseven years. The results do...

... adopted toinsure the use of cement of the best quality only, in these works, may not be without benefit, or interest to the members. Previous to 1859, Roman cement was, with few exceptions, the only cement used for the inverts of the Londonsewers;the arches being set in bluelias lime, and Portland cement...

...RENNIE; R RAWLINSON; PENROSE; A GILES; G R BURNELL; C B VIGNOLES; J SIMPSON; WALKER; G F WHITE; GREAVES; SIR C PASLEY; C MANBY; R J HOOD; R STEPHENSON © Thomas Telford and ICE 1857 CONCRETE RUBBLE BETON WORKS BRIDGES MASONRY BUILDINGS STRUCTURES FOUNDATIONS BLOCKS ROMAN...

...G RENNIE © Thomas Telford and ICE 1857 CONCRETE RUBBLE BETON WORKS ENGINEERING ARCHITECTURE PUBLIC WORKS ROMAN CONSTRUCTION MORTAR CEMENT BRIDGES HISTORY RUBBLEBeTON AND CONCRETE. 423 May 5 , 1857. ROBERT STEPHENSON, M.P., President, in the Chair. The following Candidates...

... such expensive stone structures as they had left, insteadof employ- ing pipes, with theuse of which they were certainlyacquainted. The channels of most of the Roman aqueducts, he had examined, were incrustedwithcarbonate of lime ; in that of the Pontdu Gard there was a deposit of nearly 7 inches in thickness...

... aftetrhat of Roquefavour, theAuthor thought it. desirable to place the ancient and modern buildings in contrast. The Pont du Gard is, in all probability, one of the most ancient aqueducts constructed by the Romans out, of Rome, as it is attri- buted to Agrippa, son-in-law of the Emperor Augustus, who,on his...

...C PASLEY; J HAWKSHAW; G F WHITE; GIBBS; GRAVATT; J D HOPKINS; J LOCKE; FRANCIS; R N FITZROY; J M RENDEL © Thomas Telford and ICE 1852 CEMENT ARTIFICIAL HYDRAULIC PORTLAND TRIALS TESTS BEAMS ROMAN STRENGTH ADHESION BRICKS BRICKWORK SETTING HARDENING LIME EXPERIMENTS...

... thiscommunication,aswell as upon that furnished by Mr. Brunel: who, about the sameperiod, instituted many important experiments upon the strength of Roman Cement, in connexion with bricks, several interesting facts were elicited and principles were deducedfromthem, which havesince served to regulate professional...

...,without Y2 © Thomas Telford and ICE 1845 HARBOURS ANCIENT PORTS ROMAN SHINGLE DEPOSITS FAILURES OSTIA ROME TIBER ITALY EUROPE ...

..., in order to prevent the access and egress HARBOUR OF ' OSTIA.' 311 of vessels when necessary ;thusconvertingtheportinto a close harbour (Xtpqv A E ~ u ~ o ua)s,used by the Phcenicians a t Tyre, and subsequently adopted by the Greeks and Romans. The upper part of the moles was covered with sheds...