[11] The pressures produced by 'the stack impact' depend upon the buoyancy of heated or mounting air. Wind-pushed ventilation depends upon the force on the prevailing wind to tug and push air from the enclosed space and via breaches within the making's envelope. While this clean air ventilation method is https://cibsecpd45666.blogchaat.com/30127267/lift-shaft-ventilation-an-overview