Steady Drainage of Layered Soils: II. Nomographs

Abstract

This is the second of two papers on steady drainage of layered soils. In the first paper, the theory was developed; in this paper, the drain spacing equations for the two-layered and three-layered soils have been given. A set of 16 figures, containing 29 nomographs have been prepared for easy calculation of drain spacings in two-layered soils. Drain spacings calculated by using Dagan's equation for the two-layered soils agree well with the spacings calculated from the nomographs in this paper.