C+S September 2021 Vol. 7 Issue 9 (web)

the GEOWEB System, infill, foundation and backfill soils, geogrid reinforcement, and desired safety factors. Presto also offers a SPECMaker® Tool where you can create a customized 3-part CSI-format specification for your proj- ect within minutes. Protect Tree Roots fromTraffic Damage When construction vehicles andequipment intrude upon a tree’s critical root zone, they negatively impact the soil environment through compaction and damage to near- surface roots—ultimately endangering the structural integrity of the tree. By distributing loading and limiting vertical stresses on the soil, the GEOWEB Tree Root Pro- tection (TRP) system protects the critical root zone from damage. The GEOWEB TRP system is especially beneficial in soft soil areas or where no-dig restrictions apply. The tree root protection system can be a temporary or per- manent solution. With a permeable topsoil/vegetation infill, the perforated GEOWEB cell walls offer environmental benefits, such as: • water infiltration • lateral movement of air and water • water and nutrient migration • promotion of root development Earn LEED® Green Building Credits by Creating Sus- tainable Environments Reducing a site’s overall environmental impact can help reach Green Infrastructure, Low-Impact Development, and green building goals when building in protected or densely populated areas. It can also help meet stormwa- ter regulations that limit the amount of hard surface area in your communities. Integrating the GEOWEB system into development projects may contribute to LEED® green rating credits. Credit categories include: • Reduced Site Disturbance: by creating permeable sur- faces and natural stormwater detention facilities • Stormwater Management: by using vegetated or per- meable surfaces that provide stormwater infiltration and reduce stormwater runoff • Heat Island Effect: Non-Roof: by creating a cooler sur- face with a vegetated or open-grid pavement system to minimize the impact on microclimate and human and wildlife habitat Design Support & Resources for Green Infrastructure Solutions The engineering team at Presto Geosystems works close- ly with civil engineers and landscape architects, offering free project evaluation services and on-site support for GEOWEB® 3D Soil Stabilization System solutions. Contact the Presto Geosystems team to request a free project evaluation or learn more about the GEOWEB® 3D system.

system also provides a means of fully vegetating sloped surfaces that otherwise could not support sustainable plant life. An embankment along a Maryland state highway was experiencing severe erosion caused by runoff from the impervious roadway. The Maryland State High Adminis- tration required a solution to stabilize the slope surface and prevent further degradation. The project engineers selected the GEOWEB Slope Protection System to hold the soil in place while allowing the water to run over the surface, preventing the formation of gullies. The veg- etated surface provided a deep root system to further stabilize the slope. Retaining walls built with the GEOWEB® system are an economical, green alternative to MSE wall systems—cre- ating a naturally vegetated living structure while meet- ing structural design requirements. The GEOWEB Retain- ing Walls can be designed in a variety of configurations to meet specific site requirements. Individual wall panels consist of an interconnected network of corrosion-resis- tant, HDPE-based geocells that are installed in a step-like configuration to create horizontal terraces. The exposed outer fascia cells create a natural environment for select vegetation and plantings. Indigenous vegetation or specified plantings may be incorporated for aesthetic appeal and sustainability as desired. Typical applications for GEOWEB Retaining Walls include the following: bioengineered walls, steepened embank- ments, dike and levee protection, culvert headwalls, veg- etated channel structures, change-in-grade landscape walls, resource protection barriers, and sound berms. Presto offers a free GEOWEB MSE design program, and you can create vegetated and non-vegetated MSE designs for reinforced slopes, as well as gravity and geogrid-reinforced walls. The software is based on industry-standard design methods and contains specific algorithms that capture the unique interaction between



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