Slope Stability


Slope Failure

Envirolok Reinforces the Slope

Slope failures are often a result of weather events, poor soil structures, poor drainage and/or land use.  Each of these influences can lower the soil’s ability to resist shearing, leading to slope instability. The two most common types of slope failures are rotational failures and creep failures. Rotational failures typically occur in silt or clay soils and are indicated by curved cracks, and large expanses of exposed soils.  Soil tends to slide in mass and migrate the toe of the slope. Common causes include wet / poorly drained soils and overdevelopment at the top of slope.

Creep failures are more common in sandy soils. Creep tends to be slower and harder to physically identify, as vegetation tends to remain and cover up the eroded gullies. Common causes of creep failure are freeze-thaw, overland water flow and inadequate shear strength.


Full Vegetation

Traditional erosion control products only address surface failure and are limited in their ability to stabilize steep slopes. The Envirolok system stabilizes the soil, allowing vegetation to establish and flourish. Envirolok is ideal for slopes from 1V:2H to near vertical slopes. For slopes below 4’ in height, Envirolok has a variety of gravity and tie-back methods to achieve permanent vegetative stabilization. For larger and more complex slopes, the system is easily compatible with a variety of reinforcement techniques that will further tie the system to parent soils and create shear strength and stability in the most challenging of sites. Site drainage and adequate strength are the keys to a successful solution. Envirolok takes the guess work out of the identifying the right solution by providing collaborative tools to assess drainage and shear strength.