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Demonstration of Big Tree Virtual Measurement T...

Avatar for Eric Wiseman Eric Wiseman
August 03, 2025
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Demonstration of Big Tree Virtual Measurement Technology

Demonstration presented on July 31, 2025 at Northern Virginia Urban Forest Roundtable held in Sterling, Virginia.

Avatar for Eric Wiseman

Eric Wiseman

August 03, 2025
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Transcript

  1. Big Tree Measurements – Algonkian Park – Shumard Oak Crown

    Spread (116’ + 82’) ÷ 2 = 99’  99’ ÷ 4 = 25 points

  2. Trunk Girth DBH = 5.19’ = 62”  62” DBH

    × 3.1415 = 195” CBH = 195 points August 2023 Big Tree Measurements – Algonkian Park – Shumard Oak

  3. Tree Height Obtain Lidar Shape File from USGS & Analyze

    with FugroViewer Dec. 14, 2023 Big Tree Measurements – Algonkian Park – Shumard Oak

  4. Tree Height 85’ = 85 points 25 points + 195

    points + 85 points = 305 points (Big Tree Score) Big Tree Measurements – Algonkian Park – Shumard Oak