Zephyr UAS Inc. (ZUI) was contracted by Terwilliger Plaza to perform an as-built survey of a major slope stabilization project in the southwest Portland area.
The geotechnical improvements were installed to strengthen a steep slope which currently retains a public two-lane highway, residential housing, significant amounts of vegetation, and overhead power lines. The slope was strengthened with improvement measures which included a steel mesh and several rows of anchor bolts to maintain the it hillside’s integrity.
ZUI performed an as-built survey of the post-construction condition utilizing state-of-the-art unmanned aerial vehicle (UAV) technology. After checking and obtaining airspace authorization, data collection was completed over the course of two hours. Utilizing 1250+ Hi Res photos, our team created a 3D model of the slope from which we extracted an orthorectified mosaic, a densified point cloud, and CADD features of the anchor bolts. This information will be utilized as visualization methods in the Owner’s coordination with adjacent stakeholders such as the Oregon Department of Transportation and neighboring homeowner’s associations.
- Location: Portland, OR
- Services Provided: Aerial Mapping, 3D Modeling