I'm lucky enough to be getting an insulated steel 8x8.5x5 garage built, floorspace of 68m2 and volume of 261.6m3 (5m peak). I'm just working through the building warrant requests, and am stumbling at ventilation. Whilst it's for cars, it's also to be my workshop, so I'd like to keep the heat in.
They have referenced CIBSE Guide B2: 2001, which I don't have, but they have kindly provided a few paragraphs, roughly stating that it must be 1/20th the floor area of trickle vents, or 6ACH of mechanical ventilation.
The initial suggestion of trickle vents - that would be 3.4m2 of trickle vents. That seems to be... quite a lot! Am I missing something glaringly obvious?
For mechanical ventilation, at 6ACH and if my volume calculations are right, that's 1569.6m3 per hour. I can get a fan and shutter for a few hundred quid that will do the job. Is it the right choice though?
They have referenced CIBSE Guide B2: 2001, which I don't have, but they have kindly provided a few paragraphs, roughly stating that it must be 1/20th the floor area of trickle vents, or 6ACH of mechanical ventilation.
The initial suggestion of trickle vents - that would be 3.4m2 of trickle vents. That seems to be... quite a lot! Am I missing something glaringly obvious?
For mechanical ventilation, at 6ACH and if my volume calculations are right, that's 1569.6m3 per hour. I can get a fan and shutter for a few hundred quid that will do the job. Is it the right choice though?