This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol3", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
The arrangements, construction, lighting, and ventilation of a Handicraft Room should be modelled on a practical workshop rather than a school. The construction should be simple. The height at windows in front of benches need not be more than 10 feet, but ample light must be provided, and a flat ceiling is not necessary. Ample ventilation should be provided by inlets 5 feet from floor and outlets at highest point. Twenty scholars should have floor space of about 700 square feet.