TreeRadar Data Examples and Case Studies

TreeRadar: Non-Invasive Assessment of Tree and Root Health


Data Examples and Case Studies
Tree Radar recently had a unique opportunity to scan eight trees with the TRU system in Chevy Chase, Maryland that were identified for removal. One of these trees is shown below. After being cut down, the trunk was cut into sections at the same points the scans were conducted. It was then possible to compare the data collected by the TRU system with the actual internal condition of the tree.
Preparing the tree for TRU scans at four elevations - 3ft, 4ft, 5ft and 6ft - to map internal decay within the trunk. The blue markers denote the start/stop points. Scans were done in a clockwise direction.	Prior to taking down the tree, horizontal lines were painted around the trunk showing where the TRU scans occurred. The lines served as cutting guide. Bottom section of the tree trunk (2-ft to 7-ft (0.6 m to 2 m) above the ground) from which four 1-foot sections, corresponding to location of TRU scans, would be cut.

Photo shows the section at the 3-foot (0.9 m) elevation with the start/stop position shown at 4:00 (circled in red). Photo can then be rotated to 12:00 to correspond to the TreeWin cross-sectional data image.	Photo shows section with rulers attached so that remaining wood thickness values can be measured and compared against TreeWin software predicted values.

TreeWin cross-sectional data image of section of tree at 3-foot (0.9 m) elevation. The green line is the bark/wood interface. The red line outlines the internal decay.	Photo of tree section rotated to 12:00 to correspond to cross-sectional data image. Photo shows remaining solid wood around the hollow section.

Thickness plot of data showing the remaining solid wood around the entire periphery at the 3-foot (0.9 m) elevation, and a comparison to a user-supplied hazard risk threshold.

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