Tree hazard assessment (ISA/TRAQ style): tree characteristics, health, site conditions, target, defects (roots, lean, decay), overall hazard rating and recommendations (pruning, cabling, felling, notification). Structured data capture, supporting the requirements of ISO 45001 on the hazard and risk-reduction aspects.
control points
79
anchored clauses
0
Clauses covered
7
Clauses covered
Tree characteristics
4
Tree health
8
Site conditions
14
Target
4
Tree defects
14
Hazard rating
4
Recommendations
8
Scale
Generally symmetricalMinor asymmetryMajor asymmetryStump sproutDeclining crownDominantCo-dominantIntermediateSuppressedYoungSemi-matureMatureOver-mature / senescentCrown cleanedOver-thinnedToppedCrown raisedPollardedCrown reducedFlush cutsCabledMultiple pruningsNoneNormalChloroticNecroticYesNoSparseSmallExcellentAverageLowFairStakesWires / tiesSignsCablesKerb / pavementGuardsResidenceCommercialIndustrialParkOpen spaceNaturalWoodland / forestRoadsideRaised bedContainerMoundLawnShrub bedWindbreakN/AConstructionSoil disturbanceGrade changeLine clearance pruningLand clearingAdequateInsufficientExcessiveWaterlogged trunk0%10-25%25-50%50-75%75-100%DrainageShallowCompactedDrySalineAlkalineAcidicLow volumeDisease focusHistory of failureOtherLightingSignageLine of sightViewOverhead linesBuried servicesTrafficAdjacent vegetationIsolated treeBelow the canopyAbove the canopyRecently exposedWindward canopy edgeWindthrow-prone areaEastWestSouthNorthBuildingParkingPedestriansRecreationLandscapeHardscapeSmall featureUtility linesOccasional useIntermittent useFrequent useConstant useSevereModerateUnnaturalSelf-correctedAnnualHalf-yearly1 - low2 - medium3 - high4 - severe1 - < 15 cm2 - 15-45 cm3 - 45-75 cm4 - > 75 cm1 - occasional2 - intermittent3 - frequent4 - constantRemove the defective partReduce end weightClean the crownThinRaise the crownReduce the crownRestructureShapeRoot collarDecayAerialMonitoringTo be assessedOwnerManagerCompetent authority
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How this grid is built
Every control point is written in our own words, then tied to the standard's clause number. The normative text is never reproduced: the standard itself remains to be purchased from the body that publishes it. Grids are reviewed at every new edition of a standard.
Published by NormePulse — HEMC, management consulting firm·Updated