The paper is concerned with the procedure for regulating or balancing a ventilation· system, so as to ensure that each outlet supplies or extracts its proper quantity.

Examines the conditions that develop inside an enclosure subjected to wind pressures, by analogy with a rectangular box held motionless in a stream of water.

Describes apparatus and experimental techniques for full and model scale measurements on test buildings. Discusses "blocking effect" of a large model in a small tunnel.

Gives theoretical calculation of the amount of air which moves from one room to another due to a temperature difference between the two rooms.

Measurements have been made of the air-leakage rates through structural components of conventional metal-panel and concrete buildings which may serve as containment for nuclear reactors.

Reports study of 800 paired samples of indoor and outdoor smoke and SO2 concentrations of 60 Rotterdam homes.

An analysis of ventilation necessary to maintain air quality in an above-ground fallout shelter was done, making use of theoretical models, and generalizing the results to fit measurements on actua

Reports results of measurements of the environmental radiation inside Norwegian houses.