Image from page 20 of "High-school buildings and grounds" (1922)
Publisher: Washington, Govt. print. off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress
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ating the numl)er of students oneach floor and the numl)er of floors to be served. It is u problem for eachbuilding. All that can be given is a working rule suggested l)y practice andexperience: Namely, that 120 persons in lines, two abreast, can pass a givenpoint in less than 1 minute. And if the building can be emptied in 3 minutesor less without confusion or congestion, it may be considered safe as far as itscirculation and exits are concerned. In order to avoid overcrowding, every stairway should bo in two runs fromstory to story, should have broad landings and a handrail on tlie l)alustrade aswell as on the wall. No stair run should he more than .1 feet in width betweenwall and balustrade. A width of 4 feet 6 inches is preferred. Such a stair runwill enable ciiildren to descend two abr(>ast in perfect order witliout pushingor crowding. To expedite the movement of classes, doul»le lliglits sboidd beinstalled wherever possible.10820.1°—22 3 HIGH-SCHOOL BUILDINGS AND GROUNDS.
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Plate 3.—CORRIDOR SHOWING DOUBLE STAIRWAY, CENTRAL HIGH SCHOOL, MINNEAPOLIS, MINN.To expedite the movement of classes, double flights should be installed wherever possible. (D) FIRE ESCAPES. Fire escapes should not be found upon school buildings designed for thehighest degree of safety, unless they are planned as inclosed stairways and thepupils are required to use them for regular passage at least once a day. Experi-ence has proved that the ordinary fire escape will be forgotten in the panic andconfusion attending a fire, and that the pupils, unless thoroughly acquaintedwith them as a means of exit through frequent use, will, by habit, resort to thestairways. The stairways and exits that the pupils are in the habit of using anumber of times each day during the entire school year always prove to be themost efficient means of egress in any emergency. If the stairways are properlyproportioned to the number of occupants and located with respect to the rapidand orderly dismissal of the
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