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Updated: June 17, 2025
Never any more. Just then the train jarred slowly to a standstill in a vast train-shed; up under its glass and girders, arc-lamps sent lurching shadows through the smoke and touched the clouds of steam with violet gleams. Elizabeth could see dark, gnome-like creatures, each with a hammer, and with a lantern swinging from a bent elbow, crouching along by the cars and tapping every wheel.
The columns carrying the structure are of fan top design, with the points of bearing near the extremities at the top; each of the outside tracks is supported on two longitudinal latticed girders and the central track on two plate girders; between the columns, transverse girders are spliced to the outside track cross-frames, and carry the central track system.
The heavy weight is thus spread out by the beams, girders and concrete so as to cause a reduced uniform pressure on the soil. Cement is filled in between the beams and girders and packed around them to seal them thoroughly against moisture; then clean earth or sand is rammed in up to the column bases and covered with the concrete of the cellar floor.
One end of these girders is secured to the retaining walls by means of horizontal and vertical anchorages, while the other end rests in a sliding bearing on the top flange of the arch.
The swing bridge extends over two openings, or from the north abutment to the southern pier, its center of revolution being situated over the center of the northern span, and revolves upon a turntable, which is carried upon a lower platform or frame of girders extending across the northern span of the bridge.
When she gets to running we'll come up some day and look at it." They walked slowly back toward the well. Before they reached it Peterson and Max joined them. Peterson had rolled down his sleeves and put on his coat. "You ain't going down now, are you?" he said. "We'll be starting in pretty soon on some of the heavy framing. This is just putting in girders."
But Felion, seeing, ran out upon the girders of a bridge that was being builded, and there, before them all, as the raft passed under, he let himself fall, breaking his leg as he dropped among the timbers of the fore-part of the raft; for the children were all gathered at the back, where the great oars lay motionless, one dragging in the water behind.
The whole structure will be elevated on girders carried by cast iron columns, with stations about 656 feet apart. The high speed platform weighs 146 pounds per lineal foot; and with passengers, nearly 400 pounds per foot. The slow speed platform weighs about half this.
Only in the houses of magnates was recourse had to tiles imported from China or slates of copper-bronze. In the better class of house, the roof-boards were held in place by girders, but humble folks used logs of timber, or stones, to prevent wind-stripping, and these weights imparted an untidy, rude appearance to the structure.
McCartney, with his gangs, was blocking up the ends of the three doubtful spans. but boats adrift, if the flood chanced to be a high one, might endanger the girders; and there was a very fleet in the shrunken channel. "Get them behind the swell of the guard tower," he shouted down to Peroo. "It will be dead-water there. Get them below the bridge." "Heh! Listen to the Chota Sahib.
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