Storm Damage Assessment

ProtocolData Collection and Reporting

Overview

Data Collection Estimating Engine Report Means Storm Damage

Brochure

Overview: Pre-storm setup

Create random sampleBefore emergency! Use electronic or manual means

Measure tree density and size classWithin ROWAlso 50’ back from ROW edge

Take final steps Pre-Storm report form: useful estimate Storage for future use

Overview: Post-storm work Revisit sample segmentsDebris: choose estimation method

Indirect by average crown loss class 0-25%, 26-50%, etc. Loss category images available

from FS All trees within 50’ of ROW

Direct as CY of debris

Only trees within ROWHazard pruning by size classHazard removal by size class

Enter data, report results

Validity from random samplingGeneral discussion earlierStorm type factorTested for ice storms

Low variance 2% sample got within 5% of true

value in field testNot tested for wind storms

Larger varianceMay affect required sample size

Area of ongoing i-Tree research

Data Collection

Paper formsIn disaster work, good reason to keep paper as optionElectricity not a concernDamage possibility minimalReduces training needed

Forms for many different situations

In Manual, also can be downloaded from website

Manual data entry

Easiest to use Excel’s entry formHighlight top row of

headersOn menu, click

Data Form

Can also just start typing at cell A1

Software: desktop interface

Management of data and applicationsSimple, intuitivePlaces field data directly into template

SDAP Interface

Software: PDA applicationInstalled on handheld through Start menu

Data uploaded automatically during synchronization

Time to Make Believe!

Estimating Engine

SpreadsheetEstimator built as Excel® spreadsheet6 worksheets

Home/ReadMe – navigation, helpPreStorm Data – setup dataPreStorm Analysis – preliminary analysisPostStorm Data – damage dataPostStorm Analysis – report formCodes, lookup tables – functional elements

Use of Excel® based on user survey

Hyperlinks for easy

navigation

Report Means

Procedure

EstimationStarts with field data Uses local costsScales up with simple formulas

Calculation page = reportCredibility Ease, speed

Validation

Sampling indicated on reportMeans of random samplingPercent of street miles sampled

Numbers derived right on sheetDebris Pruning, removal

Local costs shown

These values can be adjusted by end user

Back to SDAP Interface