Abstract
The purpose of retaining wall is used to retain the soils of different elevations. The weepholes are present along the retaining wall to facilitate seepage of water collected in the backfill soil. The purpose of weepholes is to drain the water through drainage constructed along the bottom of the retaining wall. The main factors influencing the seepage in a retaining wall are surface water entry, seepage in utilities and sudden rise in the water table. In this study, the behaviour of weepholes is when a geocomposite is placed in the back of the retaining wall is studied and which is compared to the conventional. Weephole is packed with larger particles in its back. The geocomposite used in the study is a laboratory fabricated material and it is a low density polyethylene with perforation. The test is conducted for two different types of soil; i. soil with specified relative density and ii. Soil with in-situ density. The behaviour of weep holes for the two different soil with a geocomposite is different. Numerical analysis is done to understand the deformation and the pressure along the wall.
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