The use of computed radon entry rates to understand radon concentration in buildings

Cavallo, K. Gadsby, T. A. Reddy

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The central role played by basement depressurization in drawing radon-contaminated soil gas into a structure has been demonstrated by calculating the radon entry rate from radon concentration and air infiltration measurements at different levels of basement depressurization in a single-family research house. The radon entry rate is found to be a linear function of basement depressurization in this house which indicates that the flow of soil gas into the structure is laminar. The radon entry rates calculated before and after using a mitigation procedure is shown to provide a better measure of the mitigation efficacy than the standard before and after mitigation radon measurements in a research house. In addition, an analysis of the possible flow characteristics of soil gas and uncontaminated air into a basement indicates that any attempt to predict long-term average radon exposure from short-term screening measurements will only be possible under severely restricted conditions.

Original languageEnglish (US)
Pages (from-to)178-184
Number of pages7
JournalHealth Physics
Issue number2
StatePublished - Feb 1994
Externally publishedYes


  • Air sampling
  • Radon
  • Soil
  • Ventilation

ASJC Scopus subject areas

  • Epidemiology
  • Radiology Nuclear Medicine and imaging
  • Health, Toxicology and Mutagenesis


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