Slope stabilization behind Metal Art Museum with PROPEX

Overview

When gabion baskets failed to prevent continuous slope failure on the hill behind the Metal Art Museum, a solution was needed to provide permanent slope stabilization. It was critical that the slope be stabilized against both global and surficial failure.

Challenge

To provide a geotechnically sound alternative, soil nails were used to stabilize the deep-seated failure and the PROPEX^® Armormax^® and Engineered Earth Armoring Solutions^® was chosen to provide surficial stability.

Solution

With its combination of the High Performance Turf Reinforcement Mat (HPTRM) and PROPEX Armormax Engineered Earth Anchors^®, this system provided a dynamic erosion control and slope stabilization solution and allowed for shorter and less soil nails to be used than originally designed. The HPTRM component is engineered to lock-in seeds and moisture, promoting rapid root development and allowing the slope to vegetate quickly.

Soil nails were installed to address deep-seated slope failure, while PROPEX® Armormax® provided surficial stability and erosion control.

The PROPEX® Armormax® system, featuring HPTRM and Engineered Earth Anchors®, reduced the need for additional soil nails while stabilizing the slope

The HPTRM locked in seeds and moisture, promoting rapid root development and ensuring long-term vegetation growth on the slope

Explore more case studies

View all

14 September 2026

Lake bank stabilization at Vivid Shores

At Vivid Shores in Bonita Springs, Florida, PROPEX® Armormax®, MIRAFI® FW403 and MIRAFI 140N stabilize lake banks exposed to wind-driven wave erosion. Completed sections are performing as designed.

14 September 2026

Crowne point country club case study

Crowne Point Country Club rehabilitated a deteriorated Vermont access road with MIRAFI H2Ri, using active moisture management to address saturated soils, frost-related distress and subgrade instability.

23 August 2026

GSE HD geomembrane lined salt ponds ensure long-term brine containment

GSE® HD geomembrane lined over 3.4 million m² of evaporation ponds to prevent brine seepage under extreme heat and UV exposure. This continuous barrier eliminated salt discharge and protected the surrounding environment.