Research Article
Nov 1977

Design of Horizontal Drains for Soil Slopes

Publication: Journal of the Geotechnical Engineering Division
Volume 103, Issue 11

Abstract

Design charts are presented for the purpose of selecting values of length and spacing of horizontal drains to achieve specific improvements of slope stability. Seepage model tests were used to determine ground-water pressures in slopes containing systems of horizontal drains having various lengths and spacings. Stability calculations evaluated the stabilizing influences of the drainage systems. The design charts define the relationships between drain length, drain spacing, and increase of safety factor of a slope. The design charts are for homogeneous soils and are independent of the permeability of the soil.

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Journal of the Geotechnical Engineering Division
Volume 103Issue 11November 1977
Pages: 1311 - 1323

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Published in print: Nov 1977
Published online: Feb 11, 2021

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T. Cameron Kenney, M.ASCE
Prof., Dept. of Civ. Engrg., Univ. of Toronto, Toronto, Canada
Wang S. Choi
Engr., Morton Dodds and Partners, Consulting Engrs., Toronto, Canada
Mladin Pazin
Engr., Peto MacCallum Ltd., Consulting Engrs., Toronto, Canada

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