Abstract :
The principal soil gases of current concern to building are radon and landfill gas. The flow of these is generally thought to be dominated by viscous flow under a pressure gradient. This paper presents results for such pressure-driven flow of gas for problems relating to a building with a bare soil floor, for example below a suspended timber floor. The solutions address this problem in two dimensions as a mixed boundary problem. In the following papers this initial solution is then mapped conformally onto a more complex geometry, and the results are compared to another analytical result and an experiment.
