Technical Booklet K Ventilation·Page 13
Rapid Ventilation
Ventilation allowing substantial air movement in a short time, either through large adjustable openings at least 1.75 m above floor level or mechanical fans.
Rapid ventilation – ventilation by either natural means, using a large adjustable ventilation opening (e.g. a window) some part of which is not less than 1.75 m above floor level, or by mechanical means (e.g. a fan) and which allows the movement of a substantial volume of air in a short period of time.
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