On the battle front of engineering (Google eBook)

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Century, 1916 - Engineering - 331 pages
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Page viii - ... of the public service commission of the first district of New York.
Page 174 - Barto and the hoys were on their way to the old crib in a tugboat. As usual. Perry was full of questions. The. first thing he wanted to know was how they got the water out of the old tunnels so as to get down into them and join them up with the new. "Why, they pumped them out,
Page 193 - But what has all this to do with the great engineering defeat you were telling us about?" interrupted Perry. "I was just coming to that," said Mr. Barto. ''Eleven years ago they started building a similar bridge across the St. Lawrence River ; it was an even more daring structure than this one. Work was first started on the southern half of the bridge ; and when that was done, they planned to build out from the north shore so that the two cantilever arms would meet over the middle of the river. The...
Page 130 - ... because it is needed on some of the other piers. The men at the caisson have a boat that we can get to shore with when we are ready." Before the day was over, Mr. Davidson had occasion to regret, sincerely, that he had sent that boat back. The day was an unusually warm one for the first of March. No one seemed to notice the heavy black clouds that, in the early afternoon, sprang up in the west, until, suddenly, the sun was obscured and a gale of wind arose. "Look there, Davidson!" cried Mr. Barto....
Page 293 - Don't I come in on this?" "If you 've got the nerve, ye can come along too," replied Jimmy Doyle. The next night furnished all the excitement a boy could wish. The adventure itself promised thrills enough, but what made it doubly exciting was that they were going to engage in an expedition that would surely be forbidden if Mr. Capen knew of it. It was about two o'clock in the morning when Jimmy Doyle smuggled them into the plant. "I 'vc got a boat down there all ready," he said, "an1 a couple of...
Page 330 - s taking me some time to tell you all this," continued Mr. Barto, ''but Jack did n't stop a minute. He just jumped into that air-lock and carried the message down to the men himself. It was a small airlock, not more than two at a time could go through. Jack stayed down there until he had hustled every one out. He was the last one to come through, and by that time the water stood six inches above the top of the air-lock. The men could n't have got him out if they had n't built a dam around the top...
Page 277 - victory' !" He led the way to the head-works, built over the shaft. "Look down there!" he commanded. "Why Capen!" exclaimed Mr. Barto. "It 's full of water !" "I should say it was," agreed Mr. Capen. "Yes, it 'sa branch of the East River, that is what it is. It is low tide now, but the water will be standing four or five feet higher by seven o'clock.
Page 274 - You see there must have been a direct connection with the river overhead. There was an unlimited supply of water, the whole Atlantic Ocean in fact, for that stream to draw upon, and it was impossible for the pumps to keep the tunnel dry. But patience and persistence finally resulted in a complete victory for the engineers. The tunnel was pushed through clear from Astoria to the Bronx.
Page 324 - He noticed the hissing outlet-valve and immediately closed the pipe. Then he locked himself through to the other side of the bulkhead by way of the large air-lock. But before he had reached the other side, enough air had accumulated in Jack's prison to equalize the pressure on both sides of the inlet door. The door had yielded...
Page 189 - The B members have to be fairly stiff; otherwise, if a heavy load is suspended from the brackets, they will buckle or bend as indicated by the dotted lines. So we will draw B with a heavy line to show that it is what a bridge engineer would call a 'compression member.' The members C, however, are never under compression and do not have to be rigid : so we will draw them with a light line to show that they are 'tension members.' Now, if we can put out one bracket from our wall, why can we not rig...

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