About Engineering

The modem eygtem of fortification ;i adopted about iroo. Bltbaomia tubular bridge ivas begon in 1842, HuMied 1850. The emUanUniriit of the Thaines was ciuouraiied by .7 a mee I. The maiu drainage pipee of London wre eigflity-Uvo miles lonn. Tïie two bridges of Xerxes had 3Gü and 314 lKats respectdrvely. Tht're are iniin.v stoaie bridgcs in I 'j i : n ; i á&OOg ÍTOm 1000 B. 0. The New Anio aqueduct at Home was sixt y-iliree juiles lOOg. Tlie üirst society of civil ongineers was formed jn London, 1793. OhBib and cable suspension bridges antedate tttie CJiiristiain era. The fir.st tunnel in England was IDHkk near Mancliester in 1766. Banu of tlhe crames now used in artrllery works will raiíte 150 tons. The Phoenk'iams were the first to employ engjmeen lo fortify eities. The Paris sewers are the largest and iu(Kt complete in the woild. The Sfc. Loiuie dsw water towcr is s;i:iil lu be the hifjluist in the world. Tbe fitst iúea, of i paeomatlc tube %vas du to Deoiie Papin, in I(!(i7. The Germine were the first to empKy gunpowcler Sor blaettng rock. Xearly one haindred different macUines bava been Inventad for boring i-ock.