Abstract

BENCHMARK PROJECT
Track: Surveying
Authors: Francis Calasanz, Marianne Jeffers

The Los Angeles County Public Work’s Vertical Control Network covers more than 1,700 miles of level runs and comprise of almost 9000 benchmarks. The elevation information associated with each benchmark is essential for surveyors and is available for download in the form of tabular data in pdf format. Converting the tabular data to points in GIS not only improved the delivery method via mobile devices but presented us with opportunities for process improvement and data mining.