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treeseer

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Everything posted by treeseer

  1. 63.8 with non-fond memories of homelite saws. Climbing less; ~15 hrs/week but still loving it! Mentally maybe 8.
  2. beechwood, that looks sweet--how long is it?
  3. Hard to answer without knowing current condition of tree, size of cuts, % off... If you want to make bald mice habitat, cut slits in the trunk. But first locate present nests, and do your best to avoid disturbing them by avoiding power tools etc.
  4. Alan did the pinkish color fade very quickly? We see the same phrnomenon here with Acer negundo Wood turners get very excited until they see it fade to tan To y i agree it does not look to be fungal in cause Pax vobiscum
  5. ookeedookee if that explains the pinkish wood, what explains the lighter color star shape penetrating the pink; those erect insistent points plunging into the pink? re fungal it might remind one of Phellinus spiculosis, stabbing its way into the yielding pink tissue, enveloping the firmness, the squirm, yes. treesaresoerotic i just melt Detective Dendro - The Case of the Spurious Spikes.pdf
  6. Fascinating pattern--the pink shows fine. What makes you think it's related to fungal activity?
  7. Wonderful job making stills into a 'vid'. Music was a good choice, with the theme of emptiness. how are the surrounding trees being managed? Over here one argument against monolithing is the loss of canopy benefits. Is there a way to have the canopy cake and leave the habitat as well? Obsessive coronetteer I kind of like the curving downward dribbling style; looks very natural like a larva mining...there will be a public place in the US for this somewhere someday.
  8. Thanks Jules for that positive view. Tony I agree that relatively speaking mechanics does not look that hard. But biomechanics is nigh unto undefinable!
  9. I hope your saw is easier to sort out than this mathematical mess! re SIA queries, I'll keep my peace.
  10. " we have only the fairly convincing body of evidence from Mattheck that failures increases dramatically in all species an all sizes after t/R falls below 0.3." If you're that convinced, I have a splendid used car you'd love to buy. The engine's broken and the tires are flat, but ooooo the paint job is new, and it's peer-reviewed! I haven't seen any data for trees >30". Smiley's sample was extremely limited (next door to me; I know the trees well), but he happily extrapolated to draw sketchy conclusions. That .3 formula, combined with the myth that reduction cuts should be to 1/3-sized laterals, has brought down 1000's of stable and easily saveable trees. Assessors might consider the first 3 letters in BIOmechanics before concluding ANYthing.
  11. "I'm getting a sense of deja vu, Guy. Sorry bout that. "Going on with my assignment, the minuses are, so far, far outweighing the positive attributes of t/R. The benefits of simple maths simply don't balance against everything else.Maybe we've all become conditioned to oversimplify such a complex conglomerate of factors. Eggs Ackley. Our 'soft' science suffers from 'data envy'. Researchers want to seem more credible, so instead of observing trees more closely over time, they borrow formulas from 'hard' sciences, like engineering, physics, math... "P.S When did K Niklas say that?" Last August at ISA Intl, and again last month at the EuroArbConf in Italy. I'm sorry if your tutor requires that you swallow all this simplified pseudoscience, then spit the appropriate quantity and quality back out. I agree; the state of the biomechanical arts is rather sorry. I tend to agree with Tony and Albert E. on this.
  12. "It does seem hard to get any decent stuff about solid stems. There's plenty to be had about homogeneous rods, but I can't apply it to trees because they are very very definitely not homogeneous or isotropic." And therein lies the rub. As Karl Niklas put it recently, biomechanical science is so fraught with generalisations, assumptions, and simplifications that any conclusions from it are extremely limited. And yet we sally forth into that yawning chasm. Why? The tree we see is vertical. Specified works can make it more likely to stay vertical. That's about all this arborist can defendably communicate. But it's enough for most assignments.
  13. "It does seem hard to get any decent stuff about solid stems. There's plenty to be had about homogeneous rods, but I can't apply it to trees because they are very very definitely not homogeneous or isotropic." And therein lies the rub. As Karl Niklas put it recently, this science is so fraught with generalisations, assumptions, and simplifications that any conclusions from it are extremely limited. "...we must always challenge what we are told." And yet we sally forth into that yawning chasm. Why? The tree we see is vertical. Specified works can make it more likely to stay vertical. That's about all this arborist can defendably communicate. But it's enough for most assignments.
  14. What type of Bracing was considered? One type would have called for two (2) holes 1/4" each, and a nearly invisible 3/16" cable. I like your use of the calipers measuring system, and wonder whether the decision to use a dynamic system was informed by BS3998.
  15. Most of what's in here is probably in yours, but fwiw. Current Topics in Aerial Assessment 1008 AA.pdf
  16. Fireblight is very similar looking but pretty specific to pyrus, and some bushes. yes clip off to manage. there's some ? about sterilising tools; some say they've TRIED to spread it this way and could not, others sterilise religiously. Same with twig cankers; some treat aggressively; spray or cauterise them. From the looks of the pic maybe aerating soil to speed drainage might not be amiss.
  17. Ah no it can get on vets too and hurts them badly. Cutting too hard after storms makes sprouts very susceptible. Only crown clean after storms--cut back to buds behind the breaks only no farther. After the Storm from TCI Magazine April-2003 small.pdf
  18. Our work is done!
  19. ...and they will have a bigger lawn to mow, too! Roots are alive. Roots need air to breathe. Roots need water to drink.
  20. Yes, we must pay deference to the dominant, don't rock the boat... Not. The UK seems even more class-conscious than the US, in terms of having letters after one's name and so on.
  21. Colleagues, Tree Folks, There'll be a webinar called Standard Pruning, Super Results! June 18 Wednesday at 12 noon EST, UTC -5:00. We will look at case studies of successfully managing high-risk trees around the world, and the science and the standards behind the practice of retrenchment pruning. One ISA CEU is earned by passing a quiz, with a $25. fee. The fee is waived if, for just $10 more, you join the Society of Commercial Arboriculture. SCA sponsors 4 webinars a year, and events like Aerial Rescue at tree climbing championships, getting students excited about tree care by hosting them at conferences, and holding an annual Field Day Tour of a successful business. Sign up with SCA is quick and easy: http://media.wix.com/ugd/8c8794_98a4fd3c4f0f33c7e93b846a0507d1d6.pdf As an SCA member, this webinar will be absolutely free. The remaining 2014 webinars will be free as well: Wildlife Management in August, and Community Engagement in December. Member and nonmember signup for the June webinar here: https://docs.google.com/forms/d/1u3Jf-kLHZjkvy7l_DFhJECqHSedyd5ua9Vwdzg2Z8u4/viewform If you can find your way to a screen and a signal at 5 pm UTC on Wednesday, I'll do my best to provide some enjoyable edutainment. See you there! RETRENCHING HOLLOW TREES FOR LIFE SCA Webinar.docx
  22. Tony everyone at the training was highly qualified at some key aspect of tree mgt coming into the May course But all benefited from widening their concept of "the job". Small group work was most productive interaction A lot to learn from each other Cultures can be like echo chambers So new and outside technology is harder to hear But those walls came down at the training--great stuff :thumbsup:
  23. That'll be no guarantee; I took it and am still unworthy. What's to hate about the fact that training tends to qualify the trainee to do the job, or even do the training.?? But sure do it; the price is right.
  24. The only wonder is how it took so long; the crack is evident under your very feet. With the expense of propping, and the sociopolitical/legal questions around fencing, there's on wonder this was not done. BS3998 and also the German ZTV standards give good advice on cabling, yet that treatment seldom gets a mention; curious! and tragic. Two strands of steel crisscrossed up high and a wee tickle at the edges....Any vet tree training should have a comprehensive and unbiased look at viable tree care options. Many of these losses look foreseeable, and very avoidable.

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