Soils are permeable materials because of the existence of interconnected voids that allow the flow of fluids when a difference in energy head exists. A good knowledge of soil permeability is needed for estimating the quantity of seepage under dams and dewatering to facilitate underground construction. Soil permeability. also termed hydraulic conductivity. https://ashleyshomestores.shop/product-category/5-piece-laf-sectional/