Posted By Phillipe Technical query in regard to the above title. I appreciate that effective and suitable provision shall be made to ensure every enclosed workplace is ventilated by a sufficient quantity of fresh or purified air. The flow rate should not fall below 5 - 8 litres per second, per occupant. What I am interested in as what would this be in terms of complete air changes per hour. The area in question is a stockroom for a retail shop. Size would vary depending upon location, but as a rule of thumb (if such a thing exists) what should I be looking at? Thanks Phil

Posted By Phillipe I have no idea on the volume to be honest. The size is approximately 15m long, 6m wide and around 4m tall...360cu.mtr ???

Posted By Ron Hunter Phillipe, There are 1000 litres in a cubic metre. As previous respondents state, if you know the room volume, the maths aren't too difficult.