Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
What is risk? |
The probability that an undesirable event will or will not occur |
|
|
How can you quantify risk? |
Risk=Pr(occurrence) x (Impact) |
|
|
What do you look at? |
Do Visual Tree Assessment - Consider root system, crown and stem - Binoculars & high def pics - May tap stem to check for hollowness Normally do not do Detailed Tree Assessment - Climbing tree to examine crown - Root excavation - Resistograph readings on stem or large roots |
|
|
Partial checklist |
Structural weaknesses Fungal fruiting bodies Lack of butt flare Girdling roots Size Target |
|
|
Structural weaknesses |
- CD stems with acute angle - Dead branches or top - Scars (~old) - Visible damage to roots, crown or stem |
|
|
Target |
If tree falls, will it reach a target? What is the potential degree of damage? - Pr (failure) - Size of part - Pr (striking part) - Nature of target |
