||Engineering design criteria for sub-slab depressurization systems in low-permeability soils /
Fowler, C. S. ;
Williamson, A. D. ;
Pyle, B. E. ;
Belzer, F. E. ;
Coker, R. N.
||Southern Research Inst., Birmingham, AL.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
|| U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Engineering, soils, residential buildings, pollution control, radon, stationary sources.
Design criteria ;
Residential buildings ;
Slab on grade construction ;
Soil pressure ;
Pressure reduction ;
Concrete construction ;
Soil properties ;
Concrete slabs ;
Indoor air pollution ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The report describes the development of engineering design criteria for the successful design, installation, and operation of sub-slab depressurization systems, based on radon (Rn) mitigation experience on 14 slab-on-grade houses in South Central Florida. The Florida houses are characterized as being hard to mitigate because of low sub-slab permeabilities. Premitigation indoor Rn concentrations ranged from 10 to 100 pCi/L. Mitigation experience and results have been combined into tables and graphs that can be used to determine recommended numbers and placement criteria for suction holes. Fan and exhaust pipe size selection is assisted by other tabulated and derived information. Guidance for installation of the sub-slab system to enhance the system's operation and effectiveness is also provided. This guidance is reported in the form of a design manual for use by mitigators when they are dealing with houses similar to these.
Caption title. "August 1990." "EPA/600/8/063." Microfiche.