Protective Lighting: Illumination as a Means of Defense of Property; the General Principles and Practice of Protective Lighting of Industrial Plants, Public Works, Etc
U.S. Government Printing Office, 1918 - Electric lighting - 47 pages
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25 feet adjustable flood-lighting units advantage angle reflector units areas auxiliary lighting systems Available for Mazda Beam spread bridge bright candlepower circuit breaker class of units construction dark dark shadows DEFENSE OF PROPERTY delivered in beam diffusing globes dome reflectors employed exterior lighting fixed post flood lamps flood-lighting lamps Flood-lighting projectors foot-candle glare guardhouse inches interior protective lighting inverted gas lamp iron conduit light from source light output light sources lighting equipment lighting of boundary lighting of piers lighting units located Mazda C lamps methods mounted 18 mounting height order of light panel patrol Percentage of light pier exteriors piers and docks practicable protective purposes row of lamps searchlight second order section on lighting self-contained series circuits shadows ship shipbuilding plants source delivered spacing intervals spread projectors storage street lighting surface third order tion water approaches weatherproof wire yellow light
Page 2 - AGO] BY ORDER OF THE SECRETARY OF WAR. TASKER H. BLISS, Major General, Acting Chief of Staff. OFFICIAL : HP McCAIN, The, Adjutant General.
Page 11 - A high fence around the boundary of a property is an important feature of protective methods. This fence should be preferably of barb wire or wire netting so constructed as to make it necessary for a trespasser to expend considerable time in surmounting or passing through it. If the fence is solid or opaque, it may with advantage be painted white, or whitewashed.
Page 11 - A boundary fence should be illuminated at night in order to ward off intruders and to simplify patrolling. Adequate illumination of the boundary fence not only makes for safety but also works for economy, in that it lessens the need for extensive patrol. There are two general practices of lighting such boundary fences, both of which have certain advantages, and either of which may be applied to advantage in most cases.
Page 24 - Co., Philadelphia and London). 4. "Code of Lighting Factories, Mills and Other Work Places, Transactions Illuminating Engineering Society Vol.
Page 6 - If everywhere about the property one of these conditions is obtained through a sufficient quantity of light, properly directed and diffused, guarding becomes simple.
Page 9 - ... some slight advantage by wearing yellow glasses when looking from behind a searchlight along the beam of light.
Page 15 - At all places of entrance or exit comparatively brilliant illumination is required over a small area.
Page 12 - It is well to adjust the beam so that it falls just outside the fence, its edge corresponding with the fence.