Foundation and Structural Stabilization

Homestake Tunnel

The Problem

Excess settlement of tunnel footings required stabilization of foundation and strengthening of tunnel crown.

Underpining of footings and installation of post tension beam at crown created “as-new” condition.

Bowing and displacement of precast wall panels indicating excessive settlement.

Reinforcing steel and P.T. ducts for new beam

Drilling for underpinning of footing

Finished Project