Annual Reports of the War Department, Part 3U.S. Government Printing Office, 1880 |
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Page 1880
... width , with an average depth of from 10 to 11 feet . The amount of material removed was 16,666.76 cubic yards . An equal amount of money to that already spent would give a channel of at least 75 feet wide , with an average depth of 12 ...
... width , with an average depth of from 10 to 11 feet . The amount of material removed was 16,666.76 cubic yards . An equal amount of money to that already spent would give a channel of at least 75 feet wide , with an average depth of 12 ...
Page 1885
... width , is 13.704 feet , while a mean of 1,924 soundings , taken over the same area in 1879 , is 13.646 feet . As to the changes of depth within the bay , Assistant Frizell , whose report is here- with , says : As to the depths within ...
... width , is 13.704 feet , while a mean of 1,924 soundings , taken over the same area in 1879 , is 13.646 feet . As to the changes of depth within the bay , Assistant Frizell , whose report is here- with , says : As to the depths within ...
Page 1891
... width , 250 feet ; depth , 19.4 feet . r = 250 × 19.4 250 + 2 × 19.4 = 16.8 .. ..√r = 4.1 V2 V2 whence , V2 2 1— 2g 0.85 S = 1200 -1 $ 29 = 1-1.384 1200 2g V = 6 × 4.13 / V2 - 1.384- 2g 1200 V5 + 161.53 V2 = 7507 . Solving this ...
... width , 250 feet ; depth , 19.4 feet . r = 250 × 19.4 250 + 2 × 19.4 = 16.8 .. ..√r = 4.1 V2 V2 whence , V2 2 1— 2g 0.85 S = 1200 -1 $ 29 = 1-1.384 1200 2g V = 6 × 4.13 / V2 - 1.384- 2g 1200 V5 + 161.53 V2 = 7507 . Solving this ...
Page 1892
... width . The section of the act of Congress above referred to , authorizing this survey , calls for " estimates of improvements proper to be made " at this point among others . The object of the survey is also stated to be " to determine ...
... width . The section of the act of Congress above referred to , authorizing this survey , calls for " estimates of improvements proper to be made " at this point among others . The object of the survey is also stated to be " to determine ...
Page 1894
... width or depth , or by increasing its length . Its proper adjustment to the several conditions of the problem is a matter of detail which need not be entered into here . Such an opening was made in 1873 , in the dike built in 1871 , and ...
... width or depth , or by increasing its length . Its proper adjustment to the several conditions of the problem is a matter of detail which need not be entered into here . Such an opening was made in 1873 , in the dike built in 1871 , and ...
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Common terms and phrases
12 feet act approved June act of June act of March Amount appropriated amount available appropriated by act approved June 14 Assistant Engineer August bank breakwater canal cents channel Chief of Engineers Clatsop Spit collection district Columbia Columbia River commenced construction contract Corps of Engineers Creek cribs cubic yards December depth dredging east pier ending June 30 entrance excavation expended during fiscal expended in fiscal feet deep feet long feet wide fiscal year ending foot Grand Haven harbor improvement Island July June 14 June 30 Lake Michigan Lieut light-house linear feet lock low-water miles north miles west Money statement mouth navigation north pier Number Ohio outer bar Pegasi piles Point port Portage Portland Potomac water profitably expended proposed removed repairs respectfully revetment riprap river rock Saint season shoal shore stone Sunday Creek superstructure survey Swan Island thermometer timber tonnage Total upper vessels west pier width Willamette Yellowstone
Popular passages
Page 2067 - Treasury to pay the actual expenses of operating, maintaining, and keeping said works in repair, which warrants or requisitions shall be paid by the Secretary of the Treasury out of any money in the Treasury not otherwise appropriated...
Page 1998 - Congress, full statements of all existing facts tending to show to what extent the general commerce of the country will be promoted by the several works of Improvements contemplated by such examinations and surveys, to the end that public moneys shall not be applied excepting where such improvements shall tend to subserve the general commercial and navigation Interests of the United States.
Page 2432 - Whenever work is stopped at least two temporary bench-marks should be established. These will consist of large nails or spikes driven their entire length vertically into the base of trees, or in the tops of sound stumps. When not in the vicinity of trees or stumps, wooden posts may be firmly set in the ground with their tops flush with the surface and nails driven into them.
Page 2362 - The exact thickness of the different layers, and the extent to which the separation of the different sizes is carried, are subject, of course, to considerable variation. The water stands several feet deep over the surface of the sand, and is allowed to flow down through the filter at such rate as experience shows to be most advantageous. Naturally, when the sand is clean, a greater quantity of water will pase in a given time than when the sand has become clogged.
Page 1950 - War to adopt for the improvement of the navigation of the Wisconsin river such plan as may be recommended by the chief .of the Bureau of .Engineers.
Page 2428 - The error of the adjustment of the level will be determined by reading the level four times when direct and four times when reversed on the telescope, reversing it between each reading. The error of adjustment must not exceed two level divisions, and commonly should not exceed one. All the details of the determination of the errors of adjustment must be entered in the note-book in their proper place.
Page 2499 - For continuing the geographical survey, of the territory of the United States west of the 100th meridian...
Page 1978 - full statements of all existing facts tending to show to what extent the general commerce of the country will be promoted by the several works of improvement contemplated by such examinations and surveys, to the end that public moneys shall not be applied, excepting where such improvements' shall tend to subserve the general commercial and navigation interests of the United States.
Page 2428 - This adjustment will be made at least once each day. Each time that the instrument is placed on a station, its axis will first be made vertical by means of the leveling screws in such manner that the telescope may be turned around the horizon without the bubble of the level running a great number of divisions. The telescope is finally made horizontal by means of the elevating screw. The inclination at the moment of observing must not ordinarily exceed three divisions of the level, and never five...
Page 2429 - ... estimated ; and finally the level will be read again. The observer will then read the rod a second time to make sure that no error has been made. The recorder will then take the differences between the readings of the middle and extreme wires to guard against errors, and if these differences denote any error the observations must be repeated, IT an error exists it will be shown by too great a difference between the differences.