Use the pier Foundation is not recommended where there are movable or weak soils such as peat or water-saturated clayey soils. Do not use this type of Foundation and in areas where there has been a sharp drop.
Kuomba msingi gati haifai ambapo kuna kusonga au dhaifu, udongo kama vile Peat au ule wa maji-saturated udongo. Unapaswa kutumia aina hii ya msingi, na katika maeneo ambapo kuna mkali tone wima.