United States or Martinique ? Vote for the TOP Country of the Week !
Many yards away, across a yawning gap, the completed north third of the suspension span reached out, above the gulf, from the tip of the north cantilever, like the arm of a Titan straining to clasp hands with his brother of the south shore. Yet the mid-air companionship of this outreaching skeleton-arm served only to heighten the giddiness and seeming instability of the south- side overhang.
But, long before 1862, the Warren and other truss-girders had come into use, and I am inclined to say that, so far as novelty in the principle of girder-construction is concerned, I must confine myself to that combination of principles which is represented by the suspended cantilever, of which the Forth Bridge, only now in course of construction, affords the most notable instance.
He invented shorter methods for bridges and culverts, and I believe was the first engineer to build a cantilever railroad-bridge in England. When he was twenty-one he had so thoroughly mastered the work that his employers offered to place him in charge of a construction-gang at a salary of two hundred pounds a year, which was then considered high pay.
A system of trunk railways from different parts of the States and Canada are focussed there, and cross the river by the Cantilever and Suspension bridges below the Falls. The New York Central and Hudson River, the Lehigh Valley, the Buffalo, Rochester, and Pittsburgh, the Michigan Central, and the Grand Trunk of Canada, are some of these lines.
I'd have sworn my cantilever was the only one that could span Michamac Strait." "And then to have your plans lost!" put in Griffith with keen sympathy beneath his dry croak. "Hell! That bridge would have landed you at the top of the ladder in one jump." "Losing those plans landed me on a brake-beam, after my worst spree ever," muttered Blake. "Don't wonder," said Griffith.
In the midst of listening to a highly technical discourse on the subject of cantilever springs, without a word of warning he leapt into the interior of a big Siddeley Saloon and closed the door behind him. The salesman looked at Mr. Smith in amazement but Mr. Smith was looking into the street along which three very serious-looking men were slowly progressing.
On the other hand, a cantilever or continuous girder bridge in three spans although such structures have been erected in similar localities could not enter into comparison of simple economy of material, because such a design would entirely disregard the anomaly that the greater part of the structure, viz., the side spans, being necessarily constructed to carry across a large space, would be too near the ground to justify the omission of further supports.
This extended from the high ground on the south side of the strait to an inner pier at the edge of the water, where it joined on to the anchor arm of the south cantilever. Almost all the area of the bridge flooring, which had been completed to beyond the centre of the cantilever, was covered with stacked lumber and piles of structural steel and rails, and kegs of nails, rivets, and bolts.
It is essentially a skeleton gate, which ordinarily lies uplifted along the top of the lock-wall, but can be swung across, lowered, and gradually closed against the water by letting down panels. In its ordinary position it lies high above the masonry conspicuous from some distance out at sea as a large cantilever bridge, swung in air.
"The gorge was an awful hole, two hundred and fifty feet wide and two hundred deep, with the river dashing white over the ledges at its bottom. It was to be spanned by a cantilever bridge with an intermediate truss. "We found our work all cut out for us. Every beam and girder was on the ground, numbered and ready. There were plenty of coolies for the ordinary labor. So we got busy at once.
Word Of The Day