00000nam 2200000za 4500 9.853699 CaOODSP 20221107154906 cr ||||||||||| 180315s1991 oncad||#o f000 0 eng d CaOODSP eng eng fre n-cn--- NH17-183/1991E-PDF Preliminary investigation concerning the impact of subslab ventilation on radon entry rate, soil temperature, and energy consumption [electronic resource] / prepared by G.K. Yuill and Associates. [Ottawa] : [Canada Mortgage and Housing Corporation], 1991. v, [4], 116 p. : ill., charts At head of title: Final report for Canada Mortgage and Housing Corporation. "February 25, 1991". "FILE: 90329/V90201". Digitized edition from print [produced by Canada Mortgage and Housing Corporation]. Includes bibliographical references. "This project had the objectives of assessing the success of subslab ventilation systems and of assessing their potential for creating foundation problems and for wasting energy. Three approaches were taken to this objective. One was to use a test house to compare the performance of three different radon mitigation systems: a subslab depressurization system, a subslab pressurization system, and a basement suction system. This house had probes installed outside the foundation to make extensive data logging possible.The second approach was to use a computer program (CONAIR) to simulate the flow of radon-laden soil gas through the soil and through the house, with the same three radon mitigation systems in place. The third approach to assessing subslab ventilation system performance was to test ten contractor-installed subslab depressurization systems in houses in Winnipeg. These houses were visited and measurements of radon concentrations, air temperatures, and system airflow rates were also established"--Exec. summary. Includes executive summary in French. gccst Housing gccst Air quality gccst Pollutants G.K. Yuill and Associates. Canada Mortgage and Housing Corporation. PDF 3.27 MB https://publications.gc.ca/collections/collection_2018/schl-cmhc/NH17-183-1991-eng.pdf