Iron corrosion; anti-fouling and anti-corrosive paints . ally that of shunting engines — passing under thebridges precluded the employment of the ordinary painterscradles, and the men were obliged to work on planks sus-pended from the longitudinal girders and, of necessity,extending but a short distance below the framework. Heretheir confined and cramped position, and the great personalinconvenience caused by the smoke and steam from theengines passing underneath, led them to get through the 24 lEON-COREOSION AND ANTI-COEBOSIVE PAINTS. work with the utmost despatch without much regard tothorou
Iron corrosion; anti-fouling and anti-corrosive paints . ally that of shunting engines — passing under thebridges precluded the employment of the ordinary painterscradles, and the men were obliged to work on planks sus-pended from the longitudinal girders and, of necessity,extending but a short distance below the framework. Heretheir confined and cramped position, and the great personalinconvenience caused by the smoke and steam from theengines passing underneath, led them to get through the 24 lEON-COREOSION AND ANTI-COEBOSIVE PAINTS. work with the utmost despatch without much regard tothoroughness or the XDiescribed regulations. The removal ofthe soot and rust on the ironwork would certainly be veryinefficiently effected, and doubtless the paint was laid ondamp places without previously drying them. Consequentlya proper degree of hardening of the paint became almost animpossibility, smce the steam from the locomotives wasgreatly retarded in its dissipation by the channels formedby the shape of the girders underneath, and would therefore. Pig. 7 (magnified).—Rust on rolled iron plate, produced by a single applica-tion of water left to dry on. be condensed on the surface of the ir(jn. Such endangeredportions were quickly coated over with a thick deposit ofsoot, so that in the course of the regular periodical inspectionof the bridge the rust actually present was invisible to theeye. When, however, in the year 1889, the thorough detailedexamination of the Coppinger bridge was undertaken, it wasfound to be so corroded in places as to necessitate immediateextensive repairs. On the removal of the top plates formingthe roadway it became apparent that m niauy places, over the IRON-CORBOSION AND ANTI-COHROSIVE PAINTS. 25 line, the cover plates, angle stays, and wall plates had becomereduced in strength by as much as 50 per cent. ; the anglesof the vertical cross frames and the diagonal plates of thehorizontal projection were in parts no thicker than a knife ;and, in fac
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
