Photogrammetric Project

T3 Global Strategies successfully completed a three year open-end contract for the Pennsylvania Turnpike Commission.  T3 was tasked with delivering photogrammetrically captured data with vertical accuracies meeting or exceeding 0.015 feet vertically.  Photography was flown at 1″=200′ and ground control was acquired by in-house survey crews using conventional levels and GPS.  Vertical control was planned and accomplished along the determined routes with no more than 700 feet between control points.  This permitted T3 to maintain accuracy when checked by the PTC surveyed profiles.  T3 accomplished all tasks including flight, control and photogrammetry on schedule.  Data was delivered in AutoCAD and Microstation in PTC standards, as well as, with Metadata for each task order. T3 also provided specialized data on certain task orders including orthophotography, cross sections and ortho rectified photo mosaics.

Plan and Topo

TIN

Breaklines and Points

Orthophoto

Composite of Mapping and Orthophoto

Cross Sections