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The US Army Corps of Engineers, Albuquerque District (USACE)
contracted with Laser Geomatics to scan approximately 6 acres of
vertical rockface just downstream of the Abiquiu Reservoir Dam. The
failing subsoils of the north vertical face resulted in the rotation of the
face and the collapse of portions of this area.
As part of the ongoing
solution, the USACE contracted to have the collapsed areas of the
vertical face removed. However, pre-construction and post-
construction surfaces were needed to calculate volumetric removal
quantities. Given the rugged and dangerous terrain from which the
rubble must be removed, the USACE felt traditional surveying too
unsafe and time-consuming to be a viable solution. Laser
Geomatics remotely captured the required area in two days and
provided the USACE with an accurate 1-foot contour interval digital
surface two weeks after collection of the data.
As stated above, the scanning portion of this project took
approximately 2 days and included 18 scans. This project required
no traditional survey since the data required was to be used for
quantity take-off only. After collection of the scan data, the scans were
post-processed and the following deliverables were created and
delivered:
- Microstation .dgn file of the planimetric data
- InRoads Digital Terrain Model (.dtm) file
- Hardcopy topographic map at 1" = 30' scale
- Shaded relief of the vertical rockface
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