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“I need a tree survey”Jonathan Hazell3 April 2013
Where else to start, but with the 3Ds• Define • Deliver• Design© Jonathan Hazell “I need a tree survey” Page 2
Define• From my experience . . .• this can be a very complicated step• your client will need firm guidance• the process fl...
Define• D Duration• E Evidence• F Finance• I Intention• N Need• E Equipment© Jonathan Hazell “I need a tree survey” Page 4
• D Duration of survey exercise• cyclical, new, one-off, repeat• E Evidence required to deliver the brief• data fields, EP...
Design• From my experience . . .• start by looking the wrong way down the telescope• what outputs will be used/are require...
Design• D Details• E Extent• S Strategy• I Information• G GPS• N Names© Jonathan Hazell “I need a tree survey” Page 7
• D Detail the outputs that will deliver the brief• PDF, report, SHP file, spreadsheet• E Extent of the survey• complete e...
Deliver• From my experience . . .• this can be fraught• control is vital• a timetable is important• flexibility can be a s...
Deliver• D Data• E Employees• L Liability• I Information• V Verification• E Events• R Re-survey© Jonathan Hazell “I need a...
• D Data set• complete, consistent, current; timely reporting• E Employees• equipment, experience, organisation, payment, ...
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I need a tree survey

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Tree surveys, and the pitfalls that lie behind the simple request "I need a tree survey"

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Transcript of "I need a tree survey"

  1. 1. “I need a tree survey”Jonathan Hazell3 April 2013
  2. 2. Where else to start, but with the 3Ds• Define • Deliver• Design© Jonathan Hazell “I need a tree survey” Page 2
  3. 3. Define• From my experience . . .• this can be a very complicated step• your client will need firm guidance• the process flow chart will be tortured• ensure that you end up as the data collector, not the datamanager• take time to record what you will, and will not, provide© Jonathan Hazell “I need a tree survey” Page 3
  4. 4. Define• D Duration• E Evidence• F Finance• I Intention• N Need• E Equipment© Jonathan Hazell “I need a tree survey” Page 4
  5. 5. • D Duration of survey exercise• cyclical, new, one-off, repeat• E Evidence required to deliver the brief• data fields, EPS, hazard assessment, mitigation, targets• F Finance available, for the survey or for remediation• lump sum, unit rate, Schedule of Rates linked to survey• I Intention of the outputs• asset management, budgeting, duty of care, work programming• N Need for the survey• consent, compliance, discharge a condition• E Equipment required, and available• pen and paper, hardware, software© Jonathan Hazell “I need a tree survey” Page 5
  6. 6. Design• From my experience . . .• start by looking the wrong way down the telescope• what outputs will be used/are required?• this will guide you toward the data that you need to collectand manipulate on your client’s behalf© Jonathan Hazell “I need a tree survey” Page 6
  7. 7. Design• D Details• E Extent• S Strategy• I Information• G GPS• N Names© Jonathan Hazell “I need a tree survey” Page 7
  8. 8. • D Detail the outputs that will deliver the brief• PDF, report, SHP file, spreadsheet• E Extent of the survey• complete estate, trees that might influence• S Strategy documents• which existing enterprise-wide policies and strategies must be followed• I Information to be gathered or researched• absolute data, hazard assessment protocol, qualitative judgements, size classes• G GPS, GIS or A-Z• survey to use GPS or GIS enabled software, or pen, paper and the A-Z• N Names, authority and responsibility• individuals’ roles, post-processing, project manager, qualifications, team structure© Jonathan Hazell “I need a tree survey” Page 8
  9. 9. Deliver• From my experience . . .• this can be fraught• control is vital• a timetable is important• flexibility can be a strenght© Jonathan Hazell “I need a tree survey” Page 9
  10. 10. Deliver• D Data• E Employees• L Liability• I Information• V Verification• E Events• R Re-survey© Jonathan Hazell “I need a tree survey” Page 10
  11. 11. • D Data set• complete, consistent, current; timely reporting• E Employees• equipment, experience, organisation, payment, qualifications, training• L Liability discharged by the survey• brief delivered, client fully informed• I Information update• how to ensure currency once works completed• V Verification or post-processing• what will be done, how will it be done, when will it be done, who will do it• E Events• how to treat extreme weather events as they arise• R Re-survey regime• consistency, evidence lead criteria, frequency, periodicity© Jonathan Hazell “I need a tree survey” Page 11
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