PiCUS SONIC TOMOGRAPH
USED TO RISK ASSESSMENT IN ORDER TO MEASURE THE THICKNESS OF THE
RESIDUAL WALL OF THE TREE WITH INTERNAL DEFECTS SUCH AS CAVITIES OR DECAY
NON INVASIVELY . MOSTLY, IT IS RECORDDED NEAR GROUND LEVEL OF TREES. THE
TREE ASSSESSMENT NEED HIGH AND DIAMETER OF TREE AND, DEPTH AND WIDTH OF
CROWN. THIS METHOD JUST ONLY FOR URBAN TREE AND IT IS UDER FRIENDLY.
Step to record a PICUS Sonic Tomograph
⇒ Through visual inspection
⇒ Select measuring level and measuring point
⇒ Mount equipment of the tree
⇒ Record geometry of he measuring level
⇒ Sonic measurement
⇒ Calculative
Colour defination
⇒ Black / brown : has hard dense
wood
⇒ Green : process in damage
⇒ Purple /pink : damage wood
⇒ Blue : hole wood
Weakness of PiCUS Sonic Tomograph is cannot use at
fibrous trees.