Lansdowne Bridge 19th Century Railroad wonder 1888. Ho Jamaloo Fame Bridge скачать в хорошем качестве

Lansdowne Bridge 19th Century Railroad wonder 1888. Ho Jamaloo Fame Bridge

The Lansdowne Bridge over the Indus at Sukkur was one of the great engineering feats of the 19th century. The longest cantilever bridge ever built, it had to support the load of heavy steam locomotives. The bridge was inaugurated on 25 March 1889. The Ayub Bridge was built immediately adjacent to the bridge in 1962, to separate the road and railway traffic. Hence the photographs of the Landsdown Bridge usually also show the Ayub Bridge. Between 1872 and 1882 bridge survey was conducted and different people suggested five differeve bridge proposals. None of them were considered completely feasible at that time. An English engineer, Sir Alexander Rendel, was then called in and he proposed a design consisting of two anchored cantilevers, each 310 feet long, carrying a suspended span of 200 ft in the middle. This design was considered feasible and became known as the Lansdowne Bridge. The girder work of this bridge was given to Westwood, Baillie & Co. of London. The bridge was first put together in the contractor's yard. The 170 feet tall cantilevers of the bridge when assembled, made quite a conspicuous scene in London. By 1887 the steel work started to arrive at Sukkur and Rohri. The bridge construction was then started under the supervision of F.E. Robertson and Hecquet, whereas, local contractors were Malik Abdul Karim & Malik Abdul Raheem. The construction of Lansdowne Bridge was no joke. It is said that the bridge designer did not think much about how the bridge would be built in real life. Giant derricks, each weighing 240 tons and each being 230 feet in length had to be erected leaning out over the water and at the same time they had to incline inwards in the plane at right-angles to the line of the bridge. And as if that was not difficult enough, horizontal tie girders 123 feet long and weighing 86 tons each had to be assembled at a height of 180 feet. This indeed was a challenge in the 1880s. When both cantilevers were completed, work started on the center span. The bridge designer had intended that the 200-ft. long span would be assembled on boats and then hoisted up. This plan did not work in practice as the Indus remained quite violent six months of the year owing to floods. In the end, Robertson built another temporary bridge to provide a platform on which the suspended span could be put together. The temporary staging weighed 56 tons. The permanent girder work of the 200-ft. span was erected and riveted in four-and-a-half days. This is good going even by today's standards. In the 1880s, Robertson's men did not have pneumatic tools or electric drives. #razuncle, #travel, #railway, #train, #pakistanrailways, #railvloger, #shehbazsharif, #trainjourney, #primeministerofpakistan, #shalimarexpress express , #trainaccident, #lahore , #usa, #uk, #india, #hanifabbasi, #ministerforrail, #locomotive, #turntable, #sevensistertunnels, #lansdownebridge, #wonder,