Construction
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Legend
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The line ran parallel with Tooley Street crossing Blue Anchor Road, Corbetts Lane and the Grand Surrey Canal. From there it curved towards the first station at Deptford High Street, and thence to London Street in Greenwich.
The subsoil was a blackish peat, which gave considerable problems, and Landmann pioneered the use of concrete to reinforce the foundations. Even so, several of the piers near to Corbetts Lane moved four or five inches (100 - 125mm) out of the perpendicular and, on 18 January 1836 two arches close to Tooley Street collapsed. Elsewhere, iron ties were used to prevent lateral spread in the brickwork. In 1840 many of the arches were improved by laying 9 inches (230 mm) of concrete above the arches, with a layer of asphalt.
From Deptford to Greenwich, the River Ravensbourne was crossed at Deptford Creek by means of a balanced bridge to allow masted vessels to pass by. When it worked eight men were enough to operate it, but possibly because of trouble with the foundations, it was unreliable. It was replaced in 1884 and again in 1963.
Originally the track used single parallel rails to the Stephenson gauge of 4 ft 8 1⁄2 in (1,435 mm), fixed to stone blocks or sleepers. By 1840 it would seem, however, that there was a mixture of bridge rails, single parallel and double parallel rails (See Rail profile). The original rails caused excessive noise, and also damage to structure and rolling stock. The bridge rails were used on the viaducts, between Deptford and Greenwich initially, laid on longitudinal timbers with cross sleepers at four foot intervals. At this time, the new double parallel rails at 78 lb. to the yard were laid for a quarter of mile (400m) at Deptford, on timber sleepers, presumably as an experiment. In addition the concrete underlay was replaced with gravel ballast to 2 feet (610 mm) thickness.
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