In Winter, 2010, Leica’s Viva GNSS receivers and integrated surveying system played key roles in a boundary survey that added a lengthy section to Tennessee’s nearly-finished Cumberland Trail. Working in extremely harsh winter conditions-during the 11 weeks of the survey, average daytime temperatures were below freezing, and surveyors endured more than 60 inches of snow and rain-the RLS Group, based in Chattanooga, was able to survey 19 miles of trail corridor. The survey was completed on schedule, with no equipment breakdowns.
The project was done in winter to take advantage of
reduced foliage and snake hibernation. Because the descriptions of underlying
parcels called to ridgelines and other natural features, surveyors knew they
would be working in areas with minimal sight lines and that good GNSS equipment
was required. "With all the one-to-one slopes out here, and the snow cover and
the brush, traversing with total stations would have been ridiculous," says RLS
President Shane Loyd, PLS, "Fortunately, the Viva GNSS system really came
through for us. We put it to the test and we were quite impressed by the
reliability, accuracy and durability of the equipment."
Since part of the job was to
create and mark the corridor on the fly, crews used the Viva controllers and
cellular links to upload data to an FTP site at the end of workdays. RLS office
technicians downloaded the data and calculated alignments, then uploaded
alignments to direct the next day’s staking. "We could have done the calcs in
the field," says Loyd, "but that would really have cut into the time available
for survey work and camping chores. The cellular links and Viva’s intuitive
dataflow management worked very well for us and made life a lot easier."
The Cumberland Trail will eventually total more than 300 miles of
wilderness trail, and stretch from Cumberland Gap National Park to Chattanooga.
Leica Geosystems is proud to be part of this historically important project, and
that the Viva system came through for surveyors in extremely challenging
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Leica Viva System Performs Well in Rough Cumberland Trail Survey
June 15, 2010