%X This paper explains a procedure for the choice of ballast modules used for the design of direct continuous foundation in karst terrain. The presence of dangerous cavities is introduced in this procedure thereby evaluating risk failure. It also provides pertinent guidelines to direct the geotechnical survey of the terrain. %I Taylor & Francis %C Beijing, China %A Carlos Delgado Alonso-Maritrena %A Félix Escolano Sánchez %B Global View of Engineering Geology and the Environment %P 23-31 %T Technical criteria for the design of foundation slabs and perimetral wall in difficult terrain in south east Madrid, Spain %L upm26497 %D 2013