Reinforced Soil Slope, an innovative sustainable grade separation system utilized in civil infrastructure

Maccaferri Inc., Hagerstown, MD 21740 USA

^* Corresponding author: l.mottadelli@maccaferri.com

Abstract

Reinforced Soil slope is an innovative solution for sustainable grade separation systems that has gained popularity in recent years. This construction method involves stabilizing the soil with reinforcing elements like geogrids, geotextiles, or woven wire mesh, combining the advantages of these elements' tensile strength and the shear strength of natural soil. This fusion yields a cost-effective and eco-friendly alternative for grade separation, particularly beneficial in areas where it is not feasible or economical to construct conventional grade separation systems. These RSS systems are successful for earth-retaining structures, embankments, and road cuttings and can be seamlessly integrated into landscapes, making them an appealing choice for environmentally sensitive areas. Their sustainability is evident in utilizing on-site fill materials, minimizing the need for frequent maintenance and repairs, thereby reducing the construction's carbon footprint. Moreover, their affordability compared to traditional methods makes them accessible to communities with limited budgets. Leveraging local materials and labor not only cuts costs but also boosts the local economy and generates employment opportunities. Crucially, reinforced soil slopes exhibit enhanced durability, distributing loads evenly and bolstering resistance against natural calamities like earthquakes or landslides. Consequently, they offer safer alternatives for communities in high-risk zones. In this paper, we will see a real case study of a project in San Francisco, where RSS has been used to repair a slope damaged during a past seismic event.