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Книги Книги 11 - 20 з 25 у Service blocks must be covered over their entire surface with at least two coats....
" Service blocks must be covered over their entire surface with at least two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat roofs, and at least one foot above the ridge of pitched roofs over which they pass or... "
Electric Lighting Specifications for the Use of Engineers and Architects - Сторінка 121
автори: Earle Abbott Merrill - 1892 - 176 стор.
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New Catechism of Electricity: A Practical Treatise

Nehemiah Hawkins - 1896 - 541 стор.
...foot apart, and not in contact with any substance other than their insulating supports. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard irons or wires from possibility of contact with other...
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Electric Wiring for the Use of Architects, Underwriters, and the Owners of ...

Russell Robb - 1896 - 183 стор.
...foot apart, and not in contact with any substance other than their insulating supports. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard irons or wires from possibility of contact with other...
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Transactions, Том 14

American Institute of Electrical Engineers - 1897
...blocks must be covered over their entire surface with at least two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard iron or wires from possibility of contact with other conducting...
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Mechanics' Pocket Memoranda: A Convenient Pocketbook for All Persons ...

International Correspondence Schools - 1897 - 318 стор.
...ASSOCIATION. Incandescent Wires. Conducting wires, carried over or attached to buildings, mast be (a) at least seven feet above the highest point of flat roofs, and (b) one foot above the ridge of pitch roofs ; (e) when in proximity to other conductors likely to divert...
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Transactions of the American Society of Mechanical Engineers

American Society of Mechanical Engineers - 1898
...blocks must be covered over their entire surface with at least two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard iron or wires from possibility of contact with other conducting...
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Distributing system and lamps

Francis Bacon Crocker - 1901 - 505 стор.
...blocks must be covered over their entire surface with at least two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. d. Must be protected by dead insulated guard iron or wires from possibility of contact with other conducting...
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Electrical Engineer's Pocket-book: A Hand-book of Useful Data for ...

Horatio Alvah Foster - 1901 - 987 стор.
...at least two coats of waterprooi paint. c. Must be at least seven U;t;t above the highest point ot flat roofs, and at least one foot above the ridge of pitched roofs over which they pass or to which tliey are attached. (I. Must he protected by dead insulated guard iron or wires from possibility of...
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The electrical transmission of energy: A manual for the design of electrical ...

Arthur Vaughan Abbott - 1904 - 675 стор.
...insulating supports. Service-blocks must be covered with two coats of waterproof paint. c. Must be at least seven feet above the highest point of flat...at least one foot above the ridge of pitched roofs. if. Must be protected by dead insulated guard iron or wires from possibility of contact with other...
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Electric light wiring

Charles Edwin Knox - 1907 - 219 стор.
...must be covered over their entire surface with at least two coats of water-proof paint. c. Must be at least seven feet above the highest point of flat...over which they pass or to which they are attached. Roof structures are frequently found which are too low or much too light for the work, or which have...
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Modern electrical construction...

Henry Charles Horstmann, Victor Hugo Tousley - 1908
...covered over their entire surface with at least two coats of waterproof paint. c. Must be at least 7 feet above the highest point of flat roofs, and at...over which they pass or to which they are attached. Roof structures are frequently found which are too low or much too light for the work, or which have...
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