File:Factory and industrial management (1891) (14764025772).jpg

Identifier: factoryindustria15newy (find matches)
Title: Factory and industrial management
Year: 1891 (1890s)
Authors:
Subjects: Engineering Factory management Industrial efficiency
Publisher: New York (etc.) McGraw-Hill (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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d of receiver type, 18-inch stroke ;propeller, 5 feet 9 inches in diameter; boilers, Scotch type, 9 feet 3inches in diameter, 10 feet long, with 124 three-inch return tubes; 2furnaces, each 36 inches in diameter. The machinery was built byNeafie cV Levy, Philadelphia. This boat was very powerful, easilyhandling two loaded barges against a strong ebb tide. The cost oftug, complete, was $20,000. It was named in honor of Colonel(ieorge H. Mendell, corps of engineers. In 1893 it became evident that great changes were developing,favorable to navigation. The middle ground, just insiile, which hadalways divided the waters into two channels, had been entirely ob-literated. Sand accretion had lakin place over a vast area along thejetty. A comparison of the 1885 survey with that of 1892 developedan area, south of the jetty, of 3,200 acres, of triangular shajie, overwhich an a( ( retion, estimated at 30,000,000 cubic yards, had takenplace, with an average depth of five feet. At extreme low water
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737 738 JETTY CONSTEUCTION about 1,290 acres of this area was bare. The area affected north ofthe jetty was found to be about equivalent to that at the south side.At the outer limit, or that part next to the channel, which embracedan area of about 1,700 acres, a scouring away of 13,000,000 cubicyards took place. The area next to the jetty at the north embraced1,500 acres, over which a deposit of 12,000,000 cubic yards tookplace. The area bare at extreme low water on the north side of thejetty, immediately next to it, was 257 acres. Over the scoured areaan average increased depth of 4.41 feet of water was effected. Alongthe axis of the jetty, sand accumulated with the building-up of therock above low water, and followed close upon the enrockment as it

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