Decay detection and dysfunction

 

1170x400_IMG_4324320x220_Tree-Surveys_01We utilise sophisticated technology to detect tree decay and dysfunction, enabling us to provide evidence on which to base important decisions regarding the status of, and any potential remedial action on, the tree being tested. Each of these tools has it’s advantages and disadvantages, and some of these tools will be more appropriate in certain situations; over the years we have built up extensive experience in using these tools so you can be sure that the most appropriate will be selected.

We currently have available the following tools to analyse and research tree states:

Sonic Tomograph

320x220_IMG_4311This tool allows us to build up a picture of the potential decay inside the tree, by measuring the speed of sound through the timber.

The Tomograph can then use these measurements to create an image that details not just where the decay is, but how severe it might be.

The Picus Sonic Tomograph is a non-invasive tool for assessing decay in trees, working on the principle that sound waves passing through decay move more slowly than sound waves traversing solid wood. Most damage and disease causes fractures, cavities, or rot and these features will all cause sound waves to pass around the affected area rather than directly across it; by repeatedly inducing a sound wave from a specific point and monitoring the results on the other sensors, a picture can be formed of the stem interior.

By sending sound waves from a number of points around a tree stem to a number of receiving points, the relative speed of the sound can be calculated and a two-dimensional image of the cross-section of the tree can be generated.

Electrical Impedance Tomograph

320x220_IMG_4350The Electrical Impedance Tomograph uses electrical current to test the state of decay within the tree. Wood is influenced most of all by the water content, cell structure and chemical elements which change according to the status of wood, and the Electrical Impedance Tomograph can detect these alterations in resistance across the timber.

Like the Sonic Tomograph, the Electrical Impedance Tomograph can only take a view through a slice (2D) of timber, so selection of a suitable height to assess is important to avoid potentially misleading readings.

The Electrical Impedance Tomograph can be used in conjunction with the Sonic Tomograph to provide even more accurate analysis, helping to analyse the type of damage, with the potential to distinguish between cavities and ‘wet’ diseased wood; it is also possible to detect the early stages of decay in the tree.

The Tomograph images can clearly indicate the state of the wood by using different colours to illustrate the tree’s resistance to the electrical current – giving a clear indication for use in reports on the potential action to be taken.

Sonic Hammer

320x220_IMG_4382The sonic hammer operates in a similar manner to the sonic tomograph in that it uses sound velocity measurement to assess potential decay in the tree.

The unit does not produce images as the tomographs would do, but it does provide a relatively quick means to assess the tree prior to further measurement; it needs just two screws fitted to opposite sides of the tree stem to allow the measurement to be taken. As this unit is simple to deploy and readings can be obtained in a timely fashion, this unit can be ideal where confidence to progress to other, more complex, forms of data collection is needed.

The sonic hammer can help in the detection of early stage decay, brown rot (so called because it decays the cellulose and hemicellulose in wood, leaving the brownish coloured lignin) and white rot (which decays lignin and cellulose, leaving the rotted wood white in colour), cavities, wet cores, and cracks in root areas.

Tree Motion Sensors

320x220_IMG_3843These units are ideal for long-term measurement recording of trees in urbanised areas or other high-activity areas, and can record data regarding root deflection and tree stem stability.

The Tree Motion Sensors are affixed to the stem of a tree and through extremely accurate measurements can record the movement and flex of the tree in high winds. This information can then analysed to provide an indication of how susceptible the tree is to failure.

The units themselves are compact and can be left unsupervised whilst data collection occurs; typically fitted at the base of the stem and another placed higher up the main stem, the flex induced from high winds will be recorded. The units utilise a series of sensors – GPS, compass and an inclinometer – to accurately record the position of the tree, the directions in which it sways and by how much.

The tree species will have an effect on how much one can expect the tree to sway under ‘normal’ conditions, but this can be affected by whether the tree is in leaf (creating a greater ‘sail area’ in the canopy), or whether poor tree work has resulted in a potentially unstable tree through the removal of too many branches (branches tend to have a dampening effect on stem oscillations).

Resistograph Microdrill

320x220_IMG_4367The Resistograph has a number of uses, and for arborists it is used to determine the amount of decay in living trees or dead stems. The unit powers a small diameter drill into the tree stem and records the resistance provided by the wood to the turning drill – simply put, if the unit senses a reduction in resistance as it drills through the tree, this is likely to indicate rot and decay.

Our resistograph can drill up to 40cm in depth, and it has the great advantage that it can be used at any height as operation of the unit from a rope and harness (or MEWP) is entirely feasible; it can also be drilled at an angle downwards to assess the rootplate as well.

We also use it in root assessment following air-spade investigations and during climbing inspections.

The Resistograph will provide you with measurable data which will determine to what extent a tree is at risk of failure; it is also invaluable for assessing structural roof beams, bridge timbers, wooden framed houses and playground furniture.

Chlorophyll fluorimeter

320x220_IMG_4696Chlorophyll fluorescence as a measure of the photochemical efficiency of plants is widely used in field studies as an early diagnostic measure of stress in plants caused by adverse environmental conditions.

The process is non destructive if undertaken on site, alternatively samples may be collected and sent to us for analysis; from sample measurements we can assess stress levels and provide remedial advice.

0 thoughts on “Decay detection and dysfunction
  1. Larrymix says:

    Terrific data. Thanks a lot.

    what is viagra super active viagra gnc
    generic viagra 100mg
    cvs pharmacy viagra cost – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  2. Larrymix says:

    Thank you, Awesome information.

    waiting period for viagra before sex can viagra help you stay erect
    viagra pills
    personalized viagra gifts – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  3. Larrymix says:

    Whoa a lot of valuable info.

    walmart viagra price viagra chinese red
    viagra pills
    viagra generic cialis – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  4. Larrymix says:

    Great stuff, Appreciate it.

    viagra and swinging viagra today for women
    generic viagra 100mg
    ringing ears after using viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  5. Larrymix says:

    You made the point!

    viagra without a prescrition viagra use for enlarged heart 2011
    viagra without a doctors prescription
    what pill works like viagra – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  6. Larrymix says:

    Reliable posts. Many thanks!

    cheap generic buy viagra ecstacy viagra
    generic viagra 100mg
    best place to get viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  7. Larrymix says:

    Thanks a lot. Plenty of information.

    uk classifieds cheap generic viagra kamagra viagra and vascular disease
    cheap viagra
    sample of viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  8. Larrymix says:

    Really a lot of amazing advice.

    subaction showcomments viagra smile newest viagra sample free
    viagra online
    can viagra be dependent – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  9. Larrymix says:

    You’ve made your position quite clearly!!

    generic brands of viagra buy viagra in malaysia
    viagra for women
    watermellon and viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  10. Larrymix says:

    Really quite a lot of amazing info!

    reputable pharmicies for generic viagra new natural viagra product
    generic viagra 100mg
    erection pills viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  11. Larrymix says:

    Incredible loads of superb knowledge!

    viagra in deutschland viagra gay men
    viagra online
    generic viagra caverta caverta pillshoprxcom – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  12. Larrymix says:

    Truly a good deal of amazing material!

    healthy herbal viagra purchase viagra in mexico
    cheap viagra
    quick forum readtopic viagra answer content – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  13. Larrymix says:

    You revealed it well!

    viagra headquarters building viagra low bloood pressure
    generic viagra 100mg
    viagra causing bleeding behind ones eyes – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  14. Larrymix says:

    You explained this terrifically.

    viagra and ecstacy and older men stallion viagra
    generic viagra
    viagra suppositories – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  15. Larrymix says:

    Kudos! Very good stuff!

    reditabs buy viagra wholesale prices viagra
    generic viagra
    is viagra covered under medicare – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  16. Larrymix says:

    Really plenty of valuable info.

    tube 8 viagra and sex avodart flomax prostate viagra
    viagra pills
    viagra ambien gifts – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  17. Larrymix says:

    Incredible loads of wonderful knowledge!

    600 mg viagra viagra grapefruit juice
    viagra pills
    viagra doctor torrance california – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  18. Larrymix says:

    Thanks a lot, I appreciate it!

    viagra canada deliver viagra without a perscription
    cheap viagra
    free viagra powered by vbulletin – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  19. Larrymix says:

    Regards! Numerous forum posts!

    viagra contra cialis products related to viagra
    buy viagra
    generic cialis pills and generic viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  20. Larrymix says:

    Regards! I appreciate it.

    hebal viagra no prescription cheapest viagra
    buy viagra
    herbal iv viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  21. Larrymix says:

    Info nicely taken!!

    watermelon rind like viagra viagra before and after
    viagra 100mg
    viagra gel – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  22. Larrymix says:

    Wow a good deal of excellent material.

    in man uk viagra can viagra go off
    viagra for sale uk
    generic viagra united states – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  23. Larrymix says:

    You said it adequately..

    buy viagra order viagra viagra boring edinburgh pages spam boring
    generic viagra
    viagra on an empty stomach – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  24. Larrymix says:

    You stated that terrifically.

    viagra on an empty stomach medicare pays for viagra
    generic viagra online
    x and viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  25. Larrymix says:

    Well spoken indeed! !

    viagra samples houston tx viagra and testosterone
    generic viagra 100mg
    sild viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  26. Larrymix says:

    You reported it perfectly!

    robin williams viagra today us viagra
    cheap viagra
    viagra and anger side effects – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  27. Larrymix says:

    Thanks a lot. I appreciate it.

    viagra generic 20 cents from india online viagra without prescription
    generic viagra online
    viagra halicyte – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  28. Larrymix says:

    Very good postings. Appreciate it.

    viagra vision problems viagra how works
    generic viagra 100mg
    viagra dangerous for young people – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  29. Larrymix says:

    Helpful write ups. Cheers.

    online perscriptions for viagra quick forum readtopic viagra signature generated
    viagra without a doctors prescription
    levitra vardenafil hci viagra sildenafil citrate – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  30. Larrymix says:

    Incredible all kinds of amazing knowledge!

    average age of viagra users viagra tx for hypertension
    viagra 100mg
    site viagra viagra – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  31. Larrymix says:

    Cheers. An abundance of write ups.

    using viagra casually cheap no prescription viagra
    viagra without a doctor prescription
    free sample prescription for viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  32. Larrymix says:

    Regards! Lots of info!

    buy cheap viagra india pharmacy viagra cheap
    generic viagra
    find viagra free sites – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  33. Larrymix says:

    Nicely put, Cheers!

    pulmonary in hypertension viagra buy viagra proffesional
    viagra 100mg
    new viagra commercial august 2010 – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  34. Larrymix says:

    Position very well utilized.!

    viagra high blood pressure viagra dependence
    buy viagra
    lowest price usa viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  35. Larrymix says:

    Whoa lots of great knowledge.

    viagra mode of action viagra oysters in australia
    viagra pills
    viagra pill color – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  36. Larrymix says:

    Many thanks. Ample forum posts!

    viagra msg viagra home
    generic viagra online
    daily record scotland viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  37. Larrymix says:

    Cheers, Ample info!

    cheap viagra kamagra viagra shops in atlanta
    viagra generic
    rush limbaugh viagra dominican republic – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  38. Larrymix says:

    Thanks. Very good information.

    viagra pages edinburgh search free forum viagra soft tabs 100mg online
    buy generic viagra
    herbal viagra replacement – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  39. Larrymix says:

    Kudos! Great stuff!

    viagra sildenafil oral jelly free viagra sample online
    generic viagra online
    medical journals pulmonary hypertension viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  40. Larrymix says:

    Seriously many of excellent info.

    viagra douane viagra anal
    generic viagra 100mg
    generic viagra is it real – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  41. Larrymix says:

    Thanks a lot! Fantastic information!

    viagra cosco g postmessage viagra smiley reply
    viagra without a doctor prescription
    male viagra cream – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  42. Larrymix says:

    Truly plenty of awesome data!

    viagra spoofing microsoft adresses viagra alcohol
    generic viagra
    difference between meltabs and viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  43. Larrymix says:

    Nicely put, Thanks.

    organic viagra viagra cialis trial pack
    viagra online
    viagra and sex pleasure – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  44. Larrymix says:

    You stated this effectively!

    slogan’s for viagra chalis vs viagra
    buy viagra online
    celery and viagra – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  45. Larrymix says:

    Great information. Regards.

    discount viagra cialis viagra plus somrthing else
    viagra pills
    50mg generic viagra online – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  46. Larrymix says:

    Thanks a lot! An abundance of information.

    mixing viagra cialis viagra capsule
    viagra for sale uk
    cheapest uk supplier viagra – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  47. Larrymix says:

    Many thanks! I value this!

    viagra generic form viagra pills beijing
    viagra 100mg
    viagra cactus pcture – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  48. Larrymix says:

    Nicely put. Appreciate it!

    sildenafil citrate discount viagra buy viagra in bangkok
    viagra 100mg
    generic viagra cost – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  49. Larrymix says:

    Truly all kinds of excellent information.

    soft tabs generic viagra settlement agreements on viagra
    viagra for sale uk
    viagra parties – https://genericviagrarcp.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  50. Larrymix says:

    Nicely put, Cheers.

    but viagra viagra and lexapro
    viagra for women
    viagra l477 – https://genericviagrantx.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  51. Larrymix says:

    You said it very well.!

    new forms of viagra discount pharmacy viagra
    buy viagra
    buy viagra online site – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.
  52. Larrymix says:

    With thanks! Wonderful stuff.

    generic viagra pay later viagra ring
    generic viagra online
    where to buy viagra in beijing – https://genericviagramsl.com

    GeraldInoge
    DwayneKer
    KevinlouTs

    Your comment is awaiting moderation.

Leave a Reply

Your e-mail address will not be published. Required fields are marked *


Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405

Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/sites/t/tree-surveys.com/public_html/wp-content/themes/shocoon/functions.php on line 405