Decay Detection Testing

Do you need decay detection in trees?  Are you looking for more certainty about the condition of your trees, or those of your clients?

Are you looking for an arboricultural consultant or a tree report to provide evidence on the structural condition of your trees? Would you like someone to provide some decay detection testing to establish the extent of any decay in tree trunks or branches?

Do you require a tree report for insurance purposes to address tree decay or meet your insurance and duty of care requirements?

If you are then you are in the right place.  We provide tree assessments and reports on all decay detection in tree matters.

This is something that we at Arbor Cultural Ltd. can undertake for you.

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These methods use the latest technology to give you more information about your trees or those of your client.

Methods include:

  • Non-Invasive Decay Detection Testing
  • Sonic Tomography (Picus), in our case ArboTom
  • Invasive Decay Detection Testing
  • Resi 400 PD Micro Drill (also known as Resistograph)
  • Trunk Coring Sampling
  • Chlorophyll Fluorescence Testing

Decay detection testing equipment falls into 2 categories, non-invasive and invasive.  The non-invasive uses sound waves travelling through the wood (similar to an ultrasound device), and invasive uses a 3mm diameter drill to measure resistance to drilling.  We at Arbor Cultural Ltd have both types of equipment, as well as tree corers and Arbor Check chlorophyll fluorescence testers to measure trees vitality and stress levels.

Using this technology can aid sound arboricultural knowledge and will enable:

These methods use the latest technology to give you more information about your trees or those of your client.

Methods include:

  • Non-Invasive Decay Detection Testing
  • Sonic Tomography (Picus), in our case ArboTom
  • Invasive Decay Detection Testing
  • Resi 400 PD Micro Drill (also known as Resistograph)
  • Trunk Coring Sampling
  • Chlorophyll Fluorescence Testing

Non-Invasive Decay Detection in Trees        Sonic tomography

We undertake sonic tomography on trees which is a bit like ultrasound.  Using sounds wave speed to assess the solidity or degradation of a tree trunk or large branches.  We have an Arbotom device produce by Frank Rinn, which is very similar to the Picus sonic tomography device.

This is something that we at Arbor Cultural Ltd. can undertake for you.

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In many ways it is better as it can produce a 3D image of the inside of the tree, measuring at up to 24 points over three levels at the same time.   This enables an assessment of the height of a column of decay as well as the lateral spread.

The ArboTom Tree Tomograph is an instrument for tree risk assessment and wood quality evaluation. It quickly provides an impression of the inner condition of a tree.  It also has an Arboradix probe for assessing the location of major roots.

This is something that we at Arbor Cultural Ltd. can undertake for you.

Please contact Arbor Cultural Ltd. for a free quotation.

Sound waves travel through sound wood. Sensors around the tree measure the time it takes an impulse to travel through the wood and reach the other sensors. The collected data is simultaneously sent to a computer, which turns the data into a coloured image to visually represent the trees cross-section.

This is a fast and easy to set up test, that is non-invasive and non-destructive.

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It is the only device on the market to measure at different heights of the tree simultaneously. The sensors are set at two or three separate horizontal levels and the acoustics across and between the levels is recorded. This allows it to produce a genuine three-dimensional interpretation of the internal condition of the tree.

Invasive Decay Detection in Trees            RESI PD400 Resistograph

We at Arbor Cultural have just invested in a new IML RESI-PD400, upgrading it from our previous IML RESI F300S.  This new specialist instrument is designed not just for an accurate measurement of the resistance given by wood to drilling (torsional resistance), but also an accurate measurement of the pushing force required to penetrate the tree stem.

This can be used as a tool to determine the strength loss of a stem or branch, to help determine whether it can be retained, and whether any form of tree surgery is required.

Resistance to drilling by wood is not a complete measure of wood strength, but resistance is usually significantly reduced if wood is weakened by decay.

This is something that we at Arbor Cultural Ltd. can undertake for you.

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The additional measure of the pushing force incorporated into this new device is important as it assists in the measurement of some structural loss due to certain types of decay, which were not so evident from just the rotational measurement.

Both readings are displayed on a digital readout on the top of the device, which can be exported as a graphical image into a report.

This device is used to excavate a narrow penetration track with a fine drill where decay is suspected.  The IML RESI-PD400 has a drill diameter of approximately 3mm and a drill length of 400mm.

The RESI drill bit causes minimal damage as it is of very small diameter which leaves a narrow penetration track.  It also does not remove the wood fragments when extracted.

Invasive Decay Detection             Core Sampling

If the RESI PD400 has identified significant decay, this can be confirmed by extracting a core sample of the tree and then inspecting the sample to determine the extent of decay and strength loss.

A link below shows how a core sample is taken from a tree.

This is something that we at Arbor Cultural Ltd. can undertake for you.

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