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Updated: June 5, 2025
Here and there there are seen horseshoe arches supported at the abutments by light and graceful columns, inclosing marble-paved courts. The open areas about which the houses are built often present most pleasing effects by a display of fountains, flowers, and statuary tastefully arranged.
To-day it was high, and a smart breeze drove it in with unusual force. Bending down as far as he could safely to look under the store, Fred saw the end of a hatchet sticking out from the corner of one of the abutments that projected from the cellar, to support the end of the store in which the trap-door was.
It consisted of a single arch of 130 feet span, the segment of a very large circle, calculated to resist the tendency of the abutments to slide inwards, which had been a defect of the Coalbrookdale bridge; the flat arch being itself sustained and strengthened by an outer ribbed one on each side, springing lower than the former and also rising higher, somewhat after the manner of timber-trussing.
The consequence was, that the main walls of the church bulged out, and the shoddy building had to be supported by outside abutments. In course of time it became clear that the work, for the most part, had to be done over again. In 1847 the Abbe again appealed to Jasmin.
Together they inspected the huge concrete abutments, then were lowered into the heart of the giant caissons which protruded from the frozen stream. The Salmon lay locked in its winter slumber now, the glaciers stood as silent and inactive as the snow-mantled mountains that hemmed them in.
Then he rushed down and found that by skillful driving Chick-chick had managed to make the descent safely and drive the car under the arch of the bridge, so concealed by the abutments and by outgrowing bushes that there would be little likelihood of attracting notice from above excepting from careful searchers.
And then, scarcely seen by the light of the poverty-stricken lamps standing here and there on the square, the cathedral assumed strange aspects. The portals yawned as caverns full of blackness, and the outer shape of the body of the building, from the towers to the apse, with its abutments and buttresses merely guessed at in the dark, stood up like a cliff worn away by invisible waves.
The roadway was to be 90 feet wide at the abutments and 45 feet in the centre; the width of the arch being gradually contracted towards the crown in order to lighten the weight of the structure. The bridge was to contain 6500 tons of iron, and the cost of the whole was to be 262,289L.
A. It appears expedient in all cases that some of the tubes should be screwed at the ends, so as to serve as stays if the riveting at the tube ends happens to be burned away, and also to act as abutments to the riveted tube or else to introduce very strong rods of about the same diameter as a tube, in substitution of some of the tubes; and these stays should have nuts at each end both within and without the tube plates, which nuts should be screwed up, with white lead interposed, before the tubes are inserted.
As the piers and abutments progressed in height, the question of how to lift the large stones into their positions had to be solved. We possessed no cranes for this purpose, so I set to work and improvised a shears made of a couple of thirty-foot rails. These were bolted together at the top, while the other ends were fixed at a distance of about ten feet apart in a large block of wood.
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