Reports investigation of mean and fluctuating pressure inside buildings, induced by wind using boundary layer wind tunnel and computer simulation techniques. Mean and root-mean-square fluctuating internal pressure coefficients were both found to be monotonic functions of the ratio of windward to leeward opening areas.< The case of a single windward opening was treated as a damped Helmholtz resonator.

Presents and discusses mean pressure coefficients averaged over the entire side of a building, obtained from measurements made on models of rectangular flat-roofed buildings made in a boundary layer wind tunnel. Describes measurement technique and data collection. Pressure coefficients based on either a local reference wind speed or a reference wind speed measured at the level of the building have been computed. Gives example and a comparison with existing building codes and standards.

Investigates a rational method of utilizing recent improvements in wind tunnel techniques and meteorological data, to estimate potential wind-generated air flow through housing in hot humid climates. The method uses mean pressure differences obtained from solid wind tunnel models together with appropriate discharge coefficients for rectangular openings. Changes in pressure distributions due to typical openings through models indicated that the use of pressure data from solid models results in errors similar to those associated with the local wind data.

Compares full-scale pressure coefficients obtained from a 57-storey building in Toronto with wind tunnel results for tests in the 9m by 9m wind tunnel at the National Research Council of Canada. Demonstrates good agreement where sufficient full-scale data exists. Proposes a method of treating peak pressures based on the fit of an exponential distribution to a population of "significant independent events", called pressure spikes. This distribution provides a good fit to both full-scale and wind tunnel results, which generally agree.

Examines the economic aspects of energy conservation techniques suitable for retrofitting into existing homes. Includes insulation, storm windows and doors, and weatherstripping. The object of this study is to determine that combination of techniques which will maximise net dollar savings in life-cycle operating costs for heating and cooling operations in existing homes, subject to specific climate conditions, fuel costs and retrofitting costs.

Reports pressure tests of the air leakage of an apartment building. The building is three storeys with a cellar above ground. There is a mechanical exhaust system and in addition every apartment has a kitchen fan.Pressure tests were made in each apartment. Leakage points were located with smoke tests. The leakage of windows and doors was determined with the "plenum" method. Each window was surrounded by a "plenum" and leakage at the boundary between plenum and wall was eliminated by an auxiliary fan which maintains the same pressure in the room as in the "plenum".

Summarises measurements of natural outdoor environmental radiation made in the Eastern United States, in New England and in Western Europe. Also reports measurements made in single family and multiple-family dwellings in the metropolitan New York area. The general conclusion from the indoor measurements is that the radiation level inside houses in that area is generally somewhat lower than, but not very different from, the outdoor levelat the same location.

During an extensive programme of sound insulation tests on a house near Manchester Airport the opportunity was taken to measure the field performance of partially open dual glazing. The results show an increase in insulation of up to 3dB(A) when compared with predictions based on laboratory SRIs. Also reports measurements of the ventilation rate in bedrooms with one window partially open and all other doors and windows closed. Measurements were made using nitrous oxide as a tracer gas.

Surveys instrumentation for measuring pressures from about 0.001 to 50mm. of mercury (0.13 to 6650 N/sq.m.) described in publications during the years 1960-1968. U-tube micromanometers and diaphragm - capacitance gages are treated in considerable detail. Also describes gas column manometers; elastic element micromanometer with optical, inductance, resistance wire, strain gage, and vacuum tube transducers; piston gages; vane gages and centrifugal micromanometers. Discusses measurement of dynamic pressure, atmospheric pressure oscillations, low vapour pressure, and calibration techniques.

Reviews literature on the health effects of indoor air pollutants in energy-efficient homes with low ventilation rates. Discusses hazards from gas cooking, formaldehyde, radon and other pollutants. Suggests air infiltration rate of 0.5 air changes/hour to keep indoor pollution to below critical levles. Also suggests installation of an air-to-air heat exchanger or electronic air cleaner.