Structural Design of WarshipsE. & F. N. Spon, Limited, 1915 - 383 pages |
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Common terms and phrases
amidships armor shelf battleships beams bearing pressure bending bending moment brackets breadth butt straps calculated calking center-line column compressive stress connected construction countersunk curve deck plating deflection diameters double bottom double riveted doubling plates edge efficiency elastic limit ends Euler's formula factor of safety fitted flange floors forces formula fracture frame space girders greater Hence hull inner bottom intercostal length load longitudinal strength maximum moment of inertia Navy neutral axis non-watertight number of rivets obtained oiltight ordinarily outer row outer shell overlapped pillar placed planks protective deck resistance rivet holes riveted joints rupture seams sectional area shearing stress sheer strakes shell plating ship ship-girder shown in fig side single riveted stanchions steel stem sternpost stiffeners strains strength members stringers structure tearing tensile tensile stress thickness transverse bulkheads transverse frames treble riveted United States Navy upper vertical keel vessels warships watertight weight whence
Popular passages
Page 40 - There shall be web stiffeners, generally in pairs, over bearings, at points of concentrated loading, and at other points where the thickness of the web is less than 1/60 of the unsupported distance between flange angles.
Page 40 - The distance between stiffeners shall not exceed that given by the following formula, with a maximum limit of six feet (and not greater than the clear depth of the web) : d = — (12,000 — s), 4° Where d = clear distance, between stiffeners of flange angles.
Page 8 - It is stated by founders that the alloy of 60 per cent, of copper and 40 per cent, of zinc will present almost precisely the same homogeneity of fracture, whether the test ingot prepared from it be cooled slowly, by exposure to the air, or rapidly, by plunging it into cold water, while alloys containing...
Page 287 - Where a protective deck is stepped a complete deck height, the respective portions shall be distinguished by means of the terms " middle protective section " and " forward (or after) protective section " in addition to the regular names.
Page 287 - ... height, the respective portions shall be distinguished by means of the terms " middle protective section " and " forward (or after) protective section " in addition to the regular names. Where a splinter deck is stepped a complete deck height, the respective portions are similarly distinguished. (10) Where a portion of the protective or splinter deck is sloped, the sloping portion is defined as the inclined protective deck or inclined splinter deck.
Page 9 - ... tensile strength and an elongation of not less than 25 per cent in two inches. 122 Brass Rivet Rod. — Tensile strength of brass rivet rods shall be not less than 55.000 pounds per square inch.
Page 287 - Where there are two or more partial decks below the lowest complete deck, the one immediately below the lowest complete deck is called the "first platform," the next is called the "second platform,
Page 337 - The steam gunboat had a single scoop of modern type with a divergent nozzle based on information given in a paper read before the Society of Naval Architects and Marine Engineers of America by EF Hewins and JR Reilly.
Page 359 - A wash plate is to be fitted in the peaks when used for water ballast, and the tanks are to be tested by a head of water 8 feet above the top of the tank, but not less in any case than to the height of the load waterline.
Page ix - ... ensure the most economical distribution of material in all parts, but also to the designer who has the courage to emulate the author in his efforts to break away from conventional design and evolve new and better systems of construction, Professor Hovgaard's book will be found of the utmost value." The work is based on a series of lectures prepared for a course in Naval Construction established by the Massachusetts Institute of Technology in 1901 for detailed officers of the United States Navy,...