Canadian engineer . y were faced with stone. These bridges include:Fonts au Diable, Notre Dame, Austerlitz, Arcole, Petit, Na- poleon, Invalides, Alma. Experimental treatment of archfaces was again tried in 1868 when a 75-foot concrete spanwas erected near Gloucester Road station over the Metro-politan Extension Railway, London, the arch face beinglined to represent ashlar. It was found that while bridgeswith concrete faces were aesthetic failures, they could bequickly built at small cost, and for several years following1873 they were generally used by the Irish engineer NathanielJackson in sp
Canadian engineer . y were faced with stone. These bridges include:Fonts au Diable, Notre Dame, Austerlitz, Arcole, Petit, Na- poleon, Invalides, Alma. Experimental treatment of archfaces was again tried in 1868 when a 75-foot concrete spanwas erected near Gloucester Road station over the Metro-politan Extension Railway, London, the arch face beinglined to represent ashlar. It was found that while bridgeswith concrete faces were aesthetic failures, they could bequickly built at small cost, and for several years following1873 they were generally used by the Irish engineer NathanielJackson in spans of 18 to 45 feet for highway crossings inthe rural districts of Ireland. The design of the Risorgimento bridge is lackingaesthetically, in that some prominent feature, such as pylons,statuary, or even lamp clusters, should appear above thedeck over the springs, thus marking the limits of the archand separating it from the abutments, but the absence ofsuch features may be due to insufficient money Fig. 7.—Proposed Bridge for Pittsburg. (6) Fal^e Work The use of reinforced concrete false work in the Tiber bridge is interesting and unusual, and isreported to have successfully resisted the rapid autumn riseof twenty-four feet, and the additional impact of a driftingsteamboat. The Tiber River is notable for its floods, havingexperienced no less than thirty disastrous ones since thebuilding of the earliest bridges there. In recent times, anexpedient has been used in some cases where maximum floodconditions were uncertain, in which the bridge has been de-signed and proportioned to resist water pressure when sub-merged, instances being those at Maryborough, Australia,and Paterson, New Jersey. The arrangement requiresheavier construction, but permits the deck to be placed ata somewhat lower level, thereby eliminating expensive ap-proach grades. As previously stated, the bridges over thePassaic River at Paterson have reinforcement continuousover the piers, which ex
Size: 2730px × 915px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
