Developers

Builders RemindersWhen cutting into slopes for building sites,attention must be paid to the cut to ensure thaterosion land slides will not result from the sitework. The earth must be cut below the 'slipping'angle or angle of repose for the soil type underconsideration. The cut slope needs to beprotected from erosion, for instance, by theplanting of shrubs or tall grasses such as ver-tever(Khus - khus grass).4.6 Slope StabilizationIn an effort to protect natural resources, life, property and infrastructure,slope stabilization measures may be necessary for areas on your propertyprone to slope failure. Several factors can contribute to land movementand these include rainfall, slope gradient, earthquakes, erosion and gravity.In some cases, rock and landslides can be triggered by clearing anddisturbing areas for roads, structures and other development. Areas proneto slope failure have been identified by the Department of DisasterManagement (DDM). Have a Hazard Vulnerability Assessment (HVA)completed for your property prior to designing your structure. Thisassessment can be requested from the DDMIf it determined that slope stabilization will be required for your property,consult a qualified engineer before proceeding. An assessment existingconditions, slope gradient, soil, surface or sediment deposits andunderlying rock formations will be important. It will also be important tohave an idea of the drainage characteristics of the area in question aswater plays an important role in slope failure in the Territory. Theapplicability of any of the various techniques will need to be determined byhighly qualified professionals.4.6.1. Slope Stabilization Techniques35Retaining walls can be installed to help stabilize rocky slopes and toprevent road blockages and other infrastructure damage. Yourproperty may require a retaining wall prior to designing andconstructing your structure. As the cost associated with walls canbe very high, ensure that you consult a qualified engineer as properengineering and installation will be pivotal to ensuring that the wall