At the London end of the route Barlow designed the overall layout and the train-shed of the Midland terminus at St Pancras (1863-1868), one of the most important stations of its kind in the world. From an engineering aspect the most spectacular feature of St Pancras Station is the 75 m wide train-shed roof, consisting of 24 principal wrought-iron ribs, which span the station with no ties above platform level. As an arched roof this was not surpassed in size until the 1890s. Barlow described the necessity for a single arch as the natural outcome of the peculiarities of the site, but his design was probably just as much the result of a quest for structural innovation for its own sake. Whereas other arched roofs generally had a high-level tie or a crescent truss, Barlow devised the ingenious solution of tying the St Pancras ribs with girders that run beneath the platforms forming the roof structure of the basement. Because the ribs are secured at low level the side walls of the station have only a secondary func
work_description_source
At the London end of the route Barlow designed the overall layout and the train-shed of the Midland terminus at St Pancras (1863-1868), one of the most important stations of its kind in the world. From an engineering aspect the most spectacular feature of St Pancras Station is the 75 m wide train-shed roof, consisting of 24 principal wrought-iron ribs, which span the station with no ties above platform level. As an arched roof this was not surpassed in size until the 1890s. Barlow described the necessity for a single arch as the natural outcome of the peculiarities of the site, but his design was probably just as much the result of a quest for structural innovation for its own sake. Whereas other arched roofs generally had a high-level tie or a crescent truss, Barlow devised the ingenious solution of tying the St Pancras ribs with girders that run beneath the platforms forming the roof structure of the basement. Because the ribs are secured at low level the side walls of the station have only a secondary func
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