arborist

  

rNNIN ARBORIST INSPECTION TREETOP A

 

COAST NSW 22:

 

The Visual Tree Assessment (VTA) methods as described in ‘The Body Language of Trees. A Handbook
for Failure Analysis. Research for Amenity Trees’ by Mattheck and Breloer (Mattheck, et al., 1994) is
used in association with the International Society of Arboriculture’s guidelines in this report.

196 ‘THE BODY LANGUAGE OF TREES

 

      
 

 

 

 

 

 

 

 

 

© VITALITY REAKAGE
Bar
-bai
- twigs ‘DEFECT
‘SYMPTO! ° ol BUTTRESS
~ but @ SAIL AREA,
@ FUNGI ~ bulges : sotueesr
OLD BRANCHES WOUNDS °
: seam oRACKS
‘© BRANCHES. e
IN @ OTHER ABNOR-
spDNe MALTHINGS
WOUND
OCCLUSION

 

 

 

}@ KNOCKING WITH | |@ KNOCKING

HAMMER

l@ SOUND VELOCITY| | MEASUREMENT
MEASUREMENT | |@ REMOVE SOIL

}@ RESISTOGRAPH |}@ RESISTOGRAPH

 

 

 

 

 

 

  

Fig 120. The Visual Tree Assessment (VTA) procedure for assessing trees.

As the suspicion increases that defects are present, the examination becomes
more thorough and searching.

 

Tree Risk Management Specialist