The Railway Conquest of the WorldTalbot, Frederick Arthur Ambrose
History
The Railway Conquest of the World
Talbot, Frederick Arthur Ambrose
Railroad engineering -- History; Railroads -- History
The pontoon was then released from its moorings and was hauled out
into the stream by means of the endless cable, until it came centrally
between the two piers on which the span was to be placed. From each
pier a hawser was passed to stanchions on either end of the pontoon.
The endless cable was slackened, and the pontoon, with its novel cargo,
was permitted to drift slowly down-stream towards the space between
the two piers, being guided in its course by manipulation of one or
the other of the two hawsers. In this manner the craft was steered
delicately into position and was made fast. The actual transference
of the span from the pontoon to the masonry bed was carried out by
hydraulic jacks, which lifted the whole mass of steel. When the jacks
were released, the ends of the span rested firmly on the two piers. By
hauling on to the endless cable the pontoon now was drawn clear of the
bridge to return for another load.
This novel method proved so completely successful that the 13 spans
were transferred from the bank and set in position within the short
space of 8 days!--half the time the engineer had computed as being
requisite for the operation. The whole undertaking was accomplished in
record time, bearing in mind the peculiar conditions prevailing in the
heart of Africa, and the use of native labour; for, from the time the
first move towards the erection of the piers was made, to the setting
of the last span, only five months elapsed. The total cost of this mass
of steel, weighing 728 tons and stretching in an unbroken line for
1,300 feet across the river, was £50,000, or $250,000.
When Broken Hill was gained, 2,013 miles from Cape Town, construction
was brought to a stop. The mastermind had passed away some time before,
and the colleague who had assisted Rhodes when other financial magnates
turned a deaf ear to the project, had also joined the great majority.
By the time Broken Hill was gained, £8,000,000 (or $40,000,000) had
been sunk in the enterprise. For months the stack of 2000 tons of
steel for the resumption northwards remained untouched, through lack
of funds, though Mr. Alfred Beit had left £1,500,000 (or $7,500,000)
towards the continuation of the work. Then the mineral wealth around
Katanga in the Congo Free State, which was under exploitation, demanded
transportation to the coast. Accordingly, the line was pushed on to the
border of the adjacent country. Rhodes’ objective was Kituta, at the
southern end of Lake Tanganyika, 450 miles north of Broken Hill, which
point marks the limit of British sway in South Africa, a distance of
about 2,700 miles by rail from Cape Town.
Public-domain text, read in full here on John Shaqi.
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