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Evidence Guide: AHCARB701 - Analyse tree biomechanics

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCARB701 - Analyse tree biomechanics

What evidence can you provide to prove your understanding of each of the following citeria?

Determine existing physical loads and strengths of trees, branches and anchorage

  1. Determine existing physical loads affecting trees
  2. Identify areas of high stress on trees and the factors that affect these areas of high stress
  3. Assess root plate environment including depth and consistency of soil, spatial limitations and history of site excavations
  4. Assess prior tree pruning operations to branches and roots
  5. Determine extent of decay and damage of trunk and root system
  6. Assess strength and material properties of structural wood, particularly in areas of high stress
Determine existing physical loads affecting trees

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify areas of high stress on trees and the factors that affect these areas of high stress

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess root plate environment including depth and consistency of soil, spatial limitations and history of site excavations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess prior tree pruning operations to branches and roots

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine extent of decay and damage of trunk and root system

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess strength and material properties of structural wood, particularly in areas of high stress

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine wind load

  1. Determine wind environment of tree
  2. Determine surface area of structure exposed to wind
  3. Determine crown surface area exposed to wind
  4. Assess aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness
  5. Estimate primary loads occurring in seasonal climatic events
  6. Determine wind-load of prevailing storms
  7. Determine load associated with saturated foliage
  8. Consider additional drag associated with saturated foliage
Determine wind environment of tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine surface area of structure exposed to wind

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine crown surface area exposed to wind

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Estimate primary loads occurring in seasonal climatic events

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine wind-load of prevailing storms

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine load associated with saturated foliage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Consider additional drag associated with saturated foliage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine structural integrity by static load testing

  1. Determine appropriate static load on trees for structural integrity testing as an estimate of a wind-equivalent load
  2. Calibrate static load testing instruments so loads are accurately applied and maintained within limits of structural safety during a static test
  3. Carry out a static test that loads the tree, measures the trunk strength and assesses root plate anchorage in the ground
  4. Monitor loads and forces electronically
  5. Monitor tree to ensure loads are kept within safe limits and damage is avoided to tree
  6. Maintain accurate records of all data from static test.
  7. Compare data with benchmarks obtained from stable tree populations
  8. Document a report on structural integrity testing of tree from the static load test
Determine appropriate static load on trees for structural integrity testing as an estimate of a wind-equivalent load

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calibrate static load testing instruments so loads are accurately applied and maintained within limits of structural safety during a static test

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out a static test that loads the tree, measures the trunk strength and assesses root plate anchorage in the ground

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor loads and forces electronically

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor tree to ensure loads are kept within safe limits and damage is avoided to tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain accurate records of all data from static test.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Compare data with benchmarks obtained from stable tree populations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document a report on structural integrity testing of tree from the static load test

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine tree dynamic response

  1. Research tree biomechanics studies using dynamic methods of analysis
  2. Understand simple models of tree dynamics
  3. Review complex models and finite element analyses that provide multimodal approaches representing dynamics of branches on trees
  4. Calculate existing mass of branches
  5. Determine degree of open-grown form of tree by calculation of the of branch mass
  6. Calculate vector of force on the tree
  7. Determine the tree dynamic response in defined wind velocity and direction
  8. Document a report on structural integrity testing of tree from the dynamic load analysis
Research tree biomechanics studies using dynamic methods of analysis

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Understand simple models of tree dynamics

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review complex models and finite element analyses that provide multimodal approaches representing dynamics of branches on trees

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate existing mass of branches

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine degree of open-grown form of tree by calculation of the of branch mass

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate vector of force on the tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the tree dynamic response in defined wind velocity and direction

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document a report on structural integrity testing of tree from the dynamic load analysis

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document a structural integrity report

  1. Research level of contribution of material properties in tree dynamics
  2. Research dynamic effect of branches on frequency and damping
  3. Determine level of contribution of form and morphology in tree dynamics
  4. Review suitability of invasive and non-invasive methods of testing
  5. Evaluate and determine likelihood of structural failure
  6. Confirm level of anchoring potential of root system and stability of tree
  7. Document a structural integrity report and provide to client
Research level of contribution of material properties in tree dynamics

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Research dynamic effect of branches on frequency and damping

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine level of contribution of form and morphology in tree dynamics

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review suitability of invasive and non-invasive methods of testing

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate and determine likelihood of structural failure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm level of anchoring potential of root system and stability of tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document a structural integrity report and provide to client

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine existing physical loads and strengths of trees, branches and anchorage

1.1 Determine existing physical loads affecting trees

1.2 Identify areas of high stress on trees and the factors that affect these areas of high stress

1.3 Assess root plate environment including depth and consistency of soil, spatial limitations and history of site excavations

1.4 Assess prior tree pruning operations to branches and roots

1.5 Determine extent of decay and damage of trunk and root system

1.6 Assess strength and material properties of structural wood, particularly in areas of high stress

2. Determine wind load

2.1 Determine wind environment of tree

2.2 Determine surface area of structure exposed to wind

2.3 Determine crown surface area exposed to wind

2.4 Assess aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness

2.5 Estimate primary loads occurring in seasonal climatic events

2.6 Determine wind-load of prevailing storms

2.7 Determine load associated with saturated foliage

2.8 Consider additional drag associated with saturated foliage

3. Determine structural integrity by static load testing

3.1 Determine appropriate static load on trees for structural integrity testing as an estimate of a wind-equivalent load

3.2 Calibrate static load testing instruments so loads are accurately applied and maintained within limits of structural safety during a static test

3.3 Carry out a static test that loads the tree, measures the trunk strength and assesses root plate anchorage in the ground

3.4 Monitor loads and forces electronically

3.5 Monitor tree to ensure loads are kept within safe limits and damage is avoided to tree

3.6 Maintain accurate records of all data from static test.

3.7 Compare data with benchmarks obtained from stable tree populations

3.8 Document a report on structural integrity testing of tree from the static load test

4. Determine tree dynamic response

4.1 Research tree biomechanics studies using dynamic methods of analysis

4.2 Understand simple models of tree dynamics

4.3 Review complex models and finite element analyses that provide multimodal approaches representing dynamics of branches on trees

4.4 Calculate existing mass of branches

4.5 Determine degree of open-grown form of tree by calculation of the of branch mass

4.6 Calculate vector of force on the tree

4.7 Determine the tree dynamic response in defined wind velocity and direction

4.8 Document a report on structural integrity testing of tree from the dynamic load analysis

5. Document a structural integrity report

5.1 Research level of contribution of material properties in tree dynamics

5.2 Research dynamic effect of branches on frequency and damping

5.3 Determine level of contribution of form and morphology in tree dynamics

5.4 Review suitability of invasive and non-invasive methods of testing

5.5 Evaluate and determine likelihood of structural failure

5.6 Confirm level of anchoring potential of root system and stability of tree

5.7 Document a structural integrity report and provide to client

Required Skills and Knowledge

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine existing physical loads and strengths of trees, branches and anchorage

1.1 Determine existing physical loads affecting trees

1.2 Identify areas of high stress on trees and the factors that affect these areas of high stress

1.3 Assess root plate environment including depth and consistency of soil, spatial limitations and history of site excavations

1.4 Assess prior tree pruning operations to branches and roots

1.5 Determine extent of decay and damage of trunk and root system

1.6 Assess strength and material properties of structural wood, particularly in areas of high stress

2. Determine wind load

2.1 Determine wind environment of tree

2.2 Determine surface area of structure exposed to wind

2.3 Determine crown surface area exposed to wind

2.4 Assess aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness

2.5 Estimate primary loads occurring in seasonal climatic events

2.6 Determine wind-load of prevailing storms

2.7 Determine load associated with saturated foliage

2.8 Consider additional drag associated with saturated foliage

3. Determine structural integrity by static load testing

3.1 Determine appropriate static load on trees for structural integrity testing as an estimate of a wind-equivalent load

3.2 Calibrate static load testing instruments so loads are accurately applied and maintained within limits of structural safety during a static test

3.3 Carry out a static test that loads the tree, measures the trunk strength and assesses root plate anchorage in the ground

3.4 Monitor loads and forces electronically

3.5 Monitor tree to ensure loads are kept within safe limits and damage is avoided to tree

3.6 Maintain accurate records of all data from static test.

3.7 Compare data with benchmarks obtained from stable tree populations

3.8 Document a report on structural integrity testing of tree from the static load test

4. Determine tree dynamic response

4.1 Research tree biomechanics studies using dynamic methods of analysis

4.2 Understand simple models of tree dynamics

4.3 Review complex models and finite element analyses that provide multimodal approaches representing dynamics of branches on trees

4.4 Calculate existing mass of branches

4.5 Determine degree of open-grown form of tree by calculation of the of branch mass

4.6 Calculate vector of force on the tree

4.7 Determine the tree dynamic response in defined wind velocity and direction

4.8 Document a report on structural integrity testing of tree from the dynamic load analysis

5. Document a structural integrity report

5.1 Research level of contribution of material properties in tree dynamics

5.2 Research dynamic effect of branches on frequency and damping

5.3 Determine level of contribution of form and morphology in tree dynamics

5.4 Review suitability of invasive and non-invasive methods of testing

5.5 Evaluate and determine likelihood of structural failure

5.6 Confirm level of anchoring potential of root system and stability of tree

5.7 Document a structural integrity report and provide to client

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence for and demonstrate:

determining existing physical loads affecting trees

identifying areas of high stress on trees and the factors that affect these areas of high stress

assessing root plate environment including depth and consistency of soil, spatial limitations and history of site excavations

assessing prior tree pruning operations to branches and roots

determining extent of decay and damage of trunk and root system

assessing strength and material properties of structural wood, particularly in areas of high stress

determining wind environment of tree

determining surface area of structure exposed to wind

determining crown surface area exposed to wind

assessing aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness

estimating primary loads occurring in seasonal climatic events

determining wind-load of prevailing storms

determining load associated with saturated foliage

considering additional drag associated with saturated foliage

determining appropriate static load on trees for structural integrity testing as an estimate of a wind equivalent load

calibrating static load testing instruments so loads are accurately applied and maintained within limits of structural safety during a static test

carrying out a static test that loads the tree, measures the trunk strength and assesses root plate anchorage in the ground

monitoring loads and forces electronically

monitoring tree to ensure loads are kept within safe limits and damage is avoided to tree

maintaining accurate records of all data from static test.

comparing data with benchmarks obtained from stable tree populations

documenting a report on structural integrity testing of tree from the static load test.

researching tree biomechanics studies using dynamic methods of analysis

understanding simple models of tree dynamics

reviewing complex models and finite element analyses that provide multimodal approaches representing dynamics of branches on trees

calculating the existing mass of branches

determining degree of open-grown form of tree by calculation the of branch mass

calculating the vector of force on the tree

determining the tree dynamic response in defined wind velocity and direction

researching the level of contribution of material properties in tree dynamics

researching the dynamic effect of branches on frequency and damping

determining the level of contribution of form and morphology in tree dynamics

reviewing suitability of invasive and non-invasive methods of testing

evaluating and determining likelihood of structural failure

confirming level of anchoring potential of root system and stability of tree

documenting a structural integrity report and provide to client.

The candidate must demonstrate knowledge of:

physical loads affecting trees

areas of high stress on trees

root plate environment including depth and consistency of soil, spatial limitations and history of site excavations

prior tree pruning operations to branches and roots

extent of decay and damage of trunk and root system

assessment of strength and material properties of structural wood

wind environment of tree

surface area of structure exposed to wind

crown surface area exposed to wind

aerodynamic drag factor of tree crown in relation to trunk diameter and extent of hollowness

estimation of primary loads occurring in seasonal climatic events

wind-load of prevailing storms

load associated with saturated foliage

additional drag associated with saturated foliage

static load

static load test

appropriateness of a static load on trees for structural integrity testing as an estimate of a wind equivalent load

calibrating static load testing instruments

limits of structural safety during a static test

measurement of trunk strength

assessment of root plate anchorage in the ground

monitoring loads and forces electronically

monitoring of tree to ensure loads are kept within safe limits

avoidance of damage to tree

maintenance of accurate records of all data from static test

benchmarks obtained from stable tree populations

reporting on structural integrity testing of tree

researching tree biomechanics studies using dynamic methods of analysis

simple models of tree dynamics

complex models and finite element analyses

multimodal approaches representing dynamics of branches on trees

calculations of existing mass of branches

open-grown form of tree

vector of force on trees

tree dynamic response

wind velocity and direction

material properties in tree dynamics

dynamic effect of branches on frequency and damping

form and morphology in tree dynamics

of invasive and non-invasive methods of testing

likelihood of structural failure

level of anchoring potential of root system

stability of tree

structural integrity reporting.

Range Statement