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Methods to estimate pressures and strains in pond geomembrane bubbles
August 1st, 2020
By Richard Thiel, Hesham Eldesouky and Richard Brachman FIGURE 1 Bubbles in pond with 60-mil (1.5-mm) HDPE geomembrane on verge of bursting This article provides an update, validation and improved approach for predicting the shape, pressure and strains that can occur in an exposed geomembrane bubble (aka “whale”) created by gas trapped below the geomembrane […]
Performance evaluation of a multi-span GRS–IBS
April 1st, 2019
The I-70 multi-span bridges (Figure 1) over Smith Road in Aurora, Colo., included design methodology changes that were classified as “experimental features,” and, thus, additional project funds were included for evaluation. In order to understand the geostructural performance of the multi-span geosynthetic reinforced soil–integrated bridge system (GRS–IBS), the abutment was instrumented with a vertical chain […]