Learning from the Storm - University of Washington · 2018. 12. 5. · The Chaos of a Storm. The...
Transcript of Learning from the Storm - University of Washington · 2018. 12. 5. · The Chaos of a Storm. The...
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Learning from the Storm
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Residential – CommercialTree Preservation – PruningPre-Construction Planning
24 Hr. Emergency ResponseConsulting – Tree Risk Assessment
Sonshine
Tree Care
Evan SussmanISA Certified Arborist #WE 9274AISA Qualified Tree Risk AssessorNCCCO Certified Articulating Boom Crane Operator
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Industry Involvement
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The Chaos of a Storm
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The Chaos of a Storm
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Planning for a Storm
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Preparing for a Storm
Supplies for response• Carpenter’s bags
• Hammer
• Box cutter knife
• 8p nails
• Tarps – all different sizes
• P-cord – or other similar light cord
• Landscape stakes
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Preparing for a Storm
Supplies for response• Carpenter’s bags
• Hammer
• Box cutter knife
• 8p nails
• Tarps – all different sizes
• P-cord – or other similar light cord
• Landscape stakes
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Preparing for a Storm
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Preparing for a Storm
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Prioritizing work
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Prioritizing work
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Prioritizing work
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Prioritizing work
• Initial Contact – Phone Call• “Is your driveway blocked?”• “Is the tree on a structure?”• “Is there a hole / puncture in the structure?”• “Is the damaged structure insured?”• “Have you initiated a claim with your insurance company?”• “What are their limitations for tree removal from a covered structure?”
• Site visit• Not always possible.• Assess / confirm extent of damage.• Determine property owners expectations.• Develop work plan.• Have property owner sign contract .
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Being Prepared – running an office without power
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Being Prepared – running an office without power
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Being Prepared – running an office without power
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Being Prepared – running an office without power
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Being Prepared – specific contracts
• Contract clause subjects.• Damage to driveways.• Existing and further damage to property.• What to do with tree parts after they’re removed from the structure.• Hourly rates / after hours rates, in house vs hired i.e. crane rental.• Billing for materials.• Underground Infrastructure.• Permission to access neighboring property.
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Being Prepared – specific contracts
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Being Prepared – specific contracts
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Being Prepared – specific JSA (Jobsite Safety Assessment)
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Being Prepared – specific JSA (Jobsite Safety Assessment)
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Being Prepared – Pre-storm assessments and Pruning
Prune: 4 large Douglas fir trees
Goals:- reduce likelihood of branch failure.
Specifications:- reduce co-dominant trunk on S.E. tree by 15-20 % of length- identify and reduce over extended branches by 15-20% of length, especially branches more likely to impact residence- consider target protection.
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Being Prepared – Pre-storm assessments and Pruning
If Qualified, suggest “Level 1 Tree Risk Assessment”.
• Consider a scope such as • all trees greater than X” DBH and within
1.25 x height radius of structure.• Inspect canopy for obvious defects.• Inspect root flare for obvious defects.
• The goal is to be able to identify trees that should be addressed proactively while managing time investment / cost.
• Mitigation options may be obvious at that point or may require a Level 2 Risk Assessment.
• That level of inspection would have identified this tree’s lack of adequate root flare / crown that led to its failure during “normal high winds”.
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Prune: Acer rubrum (red maple)
Goals:- Proactive pruning- Improve structure.- reduce likelihood of trunk
failure.
Specifications:- reduce or remove co-
dominant trunks to promote a single central leader.
- overall, no more than 25% of the total foliage bearing canopy shall be removed.
Being Prepared – Pre-storm assessments and Pruning
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Being Prepared – Pre-storm assessments and Pruning
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Being Prepared – Pre-storm assessments and Pruning
Prune: previously topped Pseudotsuga Menziesii(Douglas fir)
Goals:- Improve structure.- reduce likelihood of trunk
failure.
Specifications:- reduce or remove co-
dominant trunks to promote a single central leader.
- overall, no more than 25% of the total foliage bearing canopy shall be removed.
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Being Prepared – Pre-storm assessments and Pruning
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Learning from the storm – Observing and Documenting
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Learning from the storm – Observing and Documenting
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Learning from the storm – Observing and Documenting
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Sonshine Tree Care
“We Save Trees!”