Agents' and Inspectators Pocket-book of Fire ProtectionSpectator Company, 1902 - 218 стор. |
З цієї книги
Результати 1-5 із 43
Сторінка 6
... Wooden Moulding - Electric Gas Lighting - Electric Heaters Decorative Series Lamps - Trolley Wires , Railway Power Plants , Lighting and Power from Rail- way Wires - Electric Equipment of Car Houses — Marine Work - Signaling Systems ...
... Wooden Moulding - Electric Gas Lighting - Electric Heaters Decorative Series Lamps - Trolley Wires , Railway Power Plants , Lighting and Power from Rail- way Wires - Electric Equipment of Car Houses — Marine Work - Signaling Systems ...
Сторінка 9
... wooden construction , still is of such a class that a fire does not easily destroy the wood , and from the fact that there are no concealed spaces nor draught spaces , a fire cannot de- velop nor spread rapidly , and the chances of ...
... wooden construction , still is of such a class that a fire does not easily destroy the wood , and from the fact that there are no concealed spaces nor draught spaces , a fire cannot de- velop nor spread rapidly , and the chances of ...
Сторінка 10
... wooden flooring is laid . The partitions throughout are of fireproof brick or tile ; the stairs and elevators are in hallways cut off from the remainder of the building by fireproof partitions ; the framework , and all parts of the ...
... wooden flooring is laid . The partitions throughout are of fireproof brick or tile ; the stairs and elevators are in hallways cut off from the remainder of the building by fireproof partitions ; the framework , and all parts of the ...
Сторінка 11
... wooden posts ; the beams must be cut on a splay at the wall bearings so as to make them self - releasing , in order to prevent the walls being pulled down in case of a beam falling . The posts are placed one over the other throughout ...
... wooden posts ; the beams must be cut on a splay at the wall bearings so as to make them self - releasing , in order to prevent the walls being pulled down in case of a beam falling . The posts are placed one over the other throughout ...
Сторінка 12
... wooden joists with single wooden flooring above them and laths and plaster , or , in some comparatively few cases , stamped steel on the under side to form the ceiling for the floor below , thus leaving hollow enclosed spaces between ...
... wooden joists with single wooden flooring above them and laths and plaster , or , in some comparatively few cases , stamped steel on the under side to form the ceiling for the floor below , thus leaving hollow enclosed spaces between ...
Загальні терміни та фрази
amperes apparatus appliances approved arc lamps arranged asbestos attached automatic sprinkler benzine Board of Fire boiler bolts brick building burners capacity ceiling cement check valve circuit closed coating conductors connections construction cornice covered cut-out cylinders diameter discharge dryer dust dynamo electric elevator exposed factories fastened feet fire doors fire pump Fire Underwriters fireproof fixture floor fuse fusible link gallons gasolene gate valve glass grain grain dryers hazards heat hose hydrant inches inflammable materials inside installed insulating joints joists lamps laths leaking least less liable light located machines metal mills moisture naphtha National Board non-combustible paint partitions placed possible pounds pressure prevent protected rheostat riser riveted roof securely shaft shutters side solder steam pipes stoves suction pipe supply supported switch tank terra cotta tubes ventilated vertical volts wall frame wires wood wooden woodwork wrought iron
Популярні уривки
Сторінка 79 - The lower limit is specified for rubber-covered wires to prevent gradual deterioration of the high insulations by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tables.
Сторінка 102 - They must not come nearer than two inches to any electric light or power wire in the building, unless separated therefrom by some continuous and firmly fixed non-conductor creating a permanent separation ; this non-conductor to be in addition to the regular insulation on the wire.
Сторінка 80 - VOLTS. Any circuit attached to any machine or combination of machines which develops a difference of potential, between any two wires, of over...
Сторінка 81 - Rigid supporting requires under ordinary conditions, where wiring along flat surfaces, supports at least every four and one-half feet. If the wires are liable to be disturbed, the distance between supports should be shortened. In buildings of mill construction, mains of No.
Сторінка 103 - Insulation Resistance — The wiring in any building must test free from grounds; ie, the complete installation must have an insulation between conductors and between all conductors and the ground (not including attachments, sockets, receptacles, etc.) of not less than the following: Up to 5 amperes 4,000,000 ohms...
Сторінка 83 - ... a highpotential circuit and as coming under that class, unless an approved transforming device is used which cuts the difference of potential down to 550 volts or less.
Сторінка 82 - ... except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished...
Сторінка 106 - Bushings must be long enough to bush the entire length of the hole in one continuous piece, or else the hole must first be bushed by a continuous waterproof tube. This tube may be a conductor, such as iron pipe, but in that case an insulating bushing...
Сторінка 88 - Must be placed on all service wires, either overhead or underground, as near as possible to the point where they enter the building and inside the walls, and arranged to cut off the entire current from the building.
Сторінка 91 - Hanger-boards must be so constructed that all wires and current-carrying devices thereon shall be exposed to view, and thoroughly insulated by being mounted on a non-combustible, non-absorptive insulating substance. All switches attached to the same must be so constructed that they shall be automatic in their action, cutting off both poles to the lamp, not stopping between points when started, and preventing an arc between points under all circumstances.