File:School efficiency; a manual of modern school management (1917) (14779208551).jpg

Identifier: schoolefficiency00benn (find matches)
Title: School efficiency; a manual of modern school management
Year: 1917 (1910s)
Authors: Bennett, Henry Eastman, b. 1873
Subjects: School management and organization School buildings Teaching
Publisher: Boston, New York (etc.) : Ginn and company
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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flicted children so pro-vided for have not only made the policy a permanent onethroughout the civilized world but have raised a seriousdiscussion of the question of similar provision for normalchildren. Window ventilation. Next best to getting the childrenout to the air is getting the air in to the children. It is toocommonly supposed that because there are openings wherethe air might come into the room the air is struggling toget in. Having openings is one thing; getting the airthrough them is another. When the rooms are not heatedor artificially ventilated, exhaled air is warmer than thefresh and will therefore tend to rise. Openings at the topof the room for its egress are, then, as important as thoselower down for the ingress of fresh air. Ideal windowswould be flush with the ceiling and open their wholelength, offering not the slightest resistance to the flushingout of all air. Even openings at different levels give littleassurance of sufficient circulation to meet the needs of a
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( Hl- N-WIN III iW ROOMS Alovi-, midwinter in an (ipcnw in.lwu- loom, Craliam School, tliicago. VcUnv, a classroom converted into an open-window room by mcans^of draft screens, Moscley School, Chicago HEAT AND VENTILATION 39 room full of children if no fan or breeze is driving. Open-ings on opposite sides of the room are more effective, espe-cially doors opening upon corridors through which the airsweeps freely. Window boards. Window boards are a very simple andeffective device for permitting free circulation through thewindows and yet preventing cold drafts from striking directlyupon the children. A board, six to ten inches wide, isplaced at the bottom just inside the inner stop. The win-dow may then be raised nearly to the top of the board:the current entering the room will be deflected upward bythe board and also between the upper and lower sashes. Aflower box in the window ser\^es a similar function besidesits other values. Glass window boards have the advantageof cutting off no l

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