A text-book on hygiene and pediatrics from a chiropractic standpoint

by J. H. Craven

Stairways

Stairways should be of ample width, allowing pupils to pass up and down without danger of crowding. The risers should be no more than six inches and the treads not more than twelve inches. Where the pupils are compelled to go from one floor to another several times a day it is much better to have inclines instead of stairs.