A series of centrifuge tests was conducted to investigate the contribution made by soil nails to the stability of an excavated steep sided cutting. The main aspects considered were the effects of nail orientation and the contribution of the stiffness of the nail to maintaining slope stability. The full scale excavation modelled was a 3 metre high cutting with a slope angle of 70 deg and supported by three rows of 40mm diameter inclusions fabricated from either steel or Perspex. The instrumentation and results of these tests are detailed.
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