Sanitation of public buildings by William Paul Gerhard

Author:William Paul Gerhard
Language: eng
Format: epub
Publisher: Wiley

lieved that in most cases the satisfactory ventilation of class-rooms can be accomplished by means of ventilaating flues artificially heated to create a constant draft.

56. Ventilation of Toilet-rooms.—The ventilation of the toilet-rooms is of particular importance, and the exhaust drafts for these should be sufficiently strong to insure that the air from the water-closets and urinal fixtures will at no time pass into other parts of the school.

57. Air Moistening and Temperature Control.—Regarding the humidity of the air in the school room, this should not be less than 40, nor more than 60 per cent. Where class-rooms are heated by a central heating apparatus, provision can be made for adding a certain percentage of moisture to the air before the same is conducted to the rooms, and in the case of individual heating appliances set up in the class-rooms, it is easy to provide special vessels containing water to be evaporated so as to prevent the air from becoming too dry.

Where a thermostatic system of temperature control is not provided for, it is necessary that every schoolroom should have a reliable thermometer. This, if possible, should be arranged so as to be read from the corridor as well as from the class-room, for in this way the janitor in charge of the heating apparatus may take observations of the temperature without disturbing the classes.

Lighting.

58. Daylight Illumination.—In speaking of the windows of class-rooms, I have already pointed out the means

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