daltontrees

Ash plus height from ground equals likely I. hispidus and startts to rule out any Ganoderma.

The subject has been beaten to death, but I just want to add an obvious (to me) point. The figure of 8 is very very easy to tie on the bight (5 seconds), whereafter it can be clipped into a krab (another 5 seconds), but in rock climbing iw Ould always tie the figure of 8 as a single then pass the tail, through the harness bridge (not through the krab) then complete it as a follow-back to double it up. It makes for a super-safe knot as strong as the harness. Can explain with photos if anyone needs it, but it has little if any application in tree work.

One of the enduring attractions of the figure of 8 is that if it doesn't look right it isn't right. The same is harder to say of the Bowline and harder still of the Yosemite. And I was talking about rock climbing. If you are stuck in a freezing gully with spindrift everywhere and cold hands in thick mitts, the Yosemite is an unthinkable option but the figure of 8 can be tied and checked by the numbest hands and mind. Surely the same applies perhaps less extremely in tree work? And it IS stronger than the Bowline. The only attraction I can see in the Bowline over the figure of 8 is it's ease of undoing after loading. The Yosemite doesn't make it any easier or harder in my experience. I have never seen any tests on its strength relative to teh Bowline, but I expect it is stronger. Sorry, I am not clear on what you disagree with. That I will never use a Yosemite tie-off again?

It has the habit, bark, haws and leaves of Crataegus crus-galli (Cockspur Thorn). The species has vicious thorns that make ordinary Hawthorn look poofy by comparison. Does your trees have thorns that would rip your eyeball out like a sausage on a cocktail stick?

I am coming to appreciate very quickly that there may be few situations where the rules of thumb in the guidance can be relied upon without any further adjustment. As the document says "A simple technique cannot cover every situation...". I am trying to develop my technique with sky protractors so that as well as using the guidance I can check the results against the British Standard. Who knowsd how the scottish Act is going to produce guidance to deal with deciduous trees and shrubs in hedges? The 5%/25% rule is just about manageable for evergreens but it all goes to pot when deciduous hedges come into play.

3m of 8" wood is approximately 0.1m3. Multiply by the density of green wood, typically about 1 tonne per m3, so should be about 100kg. 3.5m would be 117kg. 3m of 10" wood is about 0.15 m3 so it's about 150kg. 3.5m of 10" would be 175kg. Manual handling regs suggest no more than 25kg lift per man, about the weight of a standard bag of sand. As wood gets seasoned it loses up to 40% of its weight in water. You can estimate from that how dry your wood is and what a length is likely to weigh. It depends on species too. Lighter wood like dunkeld larch is around 0.85 tonne/m3, denser wood like oak is up to 1.06 tonnes/m3.

Ach well, it has been looked at about 4600 times, so I suppose it passes for some sort of diversion for people.

I watched that video, will never use a Yosemite tie-off again... A quick look on Google showed up that this is the knot that nearly killed famous american climber Lynn Hill. For rock climbing I always use the figure of 8, it's stronger but seizes if it takes a fall. But if I peel off the first thing I care about is the knot not coming undone, then the rope not breaking, and way way down the list is how easy it will be to untie the knot.

I thought there would eb at least one. Anybody else from the bish-bosh end want to add their names to the subbie blacklist of the i'd-never-do-that end?

Then everybody stop posting! Unless someone wants to say they would have been proud of it?

That there is my biggest fear... Have had a few kittens on white willows, moving a metre side to side in 50 mph gusts, hands so cold I had to tie off and curl up in a ball with bare hands in oxters inside the waterproofs for 2 minutes till I could feel them again.

Gor! This has gone on a bit. I was mostly annoyed that they had inconvenienced road users, but I've got over it now. I don't care who they are and a witch-hunt is pointless. But their main offence was posting on You Tube. You can take whatever part of the spectrum of I'd-never-do-that to bish-bosh-home-for-tea you want, but would anyone on here have been proud enough of the obviously amateurish performance to want to put film of it in the public domain? Darwin says what happens eventually to the gene pool after individuals ignore screeched warnings and walk under falling trees, but he's not quite so explicit about the consequences, for the individual and the species, for people posting videos of it.

I haven't looked in for a while. I like your thoroughness and logic. In short, it is unlawful to obstruct, letting a tree obstruct is therefore unlawful; this creates a statutory requirement to unobstruct and therefore falls within the ambit of the Planning legislation to prune without TPO consent. I always thought the 2.4 and 5.2m 'rules' were metric equivalents of 8 and 17 feet. Is there something in the highway code that limits vehicles to 16 feet? I am not sure of your logic on the 'without lawful authority or excuse' part of the Act. It is saying it's not an offence to obstruct if you have some authority to do so. A need for TPO consent could be seen as temporarily preventing authority to remove an obstruction and at a push could be a defence against prosecution until consent comes through or the need for it is waived. So while I agree that the only way the law could approach TPOs and obstructions would be exemption, I don't think the 'without lawful authority or excuse' part has any relevance, if anything it might operate in the opposite direction. Trees are seen as different even if they are not mentioned in the Act. They are the only thing in nature that can create a structure in somebody else's airspace by stealth. They are encroachment and arguably trespass, but it is not an offence to let a tree encroach. The owner of the airspace is allowed to cut them back but the tree owner is not obliged to do so unless nuisance has been established. This grey area continues (in my mind) over roads, where the highways authority doesn't necessarily own the airspace. Is allowing a tree to grow wilful obstruction? If wilful means deliberate obstruction i.e. cultivation or training of a tree with the intended ourpose of creating an obstruction, then no! Trees are treated by the law as unique and different and have been since the foundations of common law in Roman times and probably before then. Again, I agree with your outcome but I harbour reservations about how clear the issue is. And I would suggest that if anyone looks in on this forum and is looking for a yes/no then go carefully because just because branches overhang a road you don't have a TPO exemption automatically to remove them. Firstly you almost certainly have a TPO exemption to remove just enough of them to remove the obstruction. Secondly there could be situations like I know of where a street is only accessible under a 4m railway bridge and it is not imaginable that any vehicle could get there to need 5.2m clearance. No obstruction. Sorry, I am babysitting and bored on a Saturday night, with time aplenty to kill. Please don't lurk in the future, get right in there.

I'm sure we've all been tempted. But who in their right mind would post a video of their own borderline ineptitude or contempt for their client on a public website?

I've wrorn ever to buy ythe Oregon ones again, the spring keeps jumping off or getting bent and not working. The Stihl ones are much much better all round. Even the wood on the handle lasts longer. I have started filing bareback towards the end of the life of a chain. That way you haven't progressively lost the right depth and gone too far into the ties.

You're right, it does have POETS day written all over it.

I agree with Treeseer about malpractice. And a typical cost per tree for surveys (if part of a big survey) is about £2. £4 if you want me to bring a trowel. That said the tree looks pretty humped. But if it's being felled to protect parked cars instead of telling the resident that they have no formal right to park there, it's another small nail in the coffin of civilisation.

Sorry guys I have calmed down now. I wouldn't dream of doing what they did in the video the way they did it any more than I would slash their tyres. I will say again what the problem is. They broke the law by wilfully obstructing the road. Their traffic management is rubbish to non existent. It's not safe and it's not courteous and it's not professional. And anyone watching it on You Tube might think that this is how tree surgeons are allowed to operate, then imitate it. Then we will be reading about a fatality or injury somewhere and giving it the usual tut-tut-cowboys chat here. I spec, price and do jobs properly. Most of the time the traffic management seems unnecessary but anything else is just gambling. I can't compete with guys like this that underprice and take chances and cut corners. Nor do I want to. I have just spent the afternoon taking half a horse chestnut tree off a doctor's surgery roof. It snapped off at 10 metres and flew another 10m sideways and impaled itself in the roof. One limb went right through the slates, the sarking, the attic, the insulation and the ceiling and if you had been standing in the room it would have gone through your head. The whole thing was about the size of that tree those guys felled. I do not think it is ridiculous at all to foressee that a limb could penetrate 3 inches of tarmac and damage services. Or even not penetrate but crack a buried cast iron pipe. Do you think these guys assessed the risk of it and deemed it so small that they could overlook it? No, I suspect it didn't even occur to them in their haste to close the road and make a quick buck instead of doing a proper and considerate job using only half of the road and more than 3 cones. There, I have let off steam. Back to business...

No way is that a Council job, if it was it would bhave been done slowly. It is a criminal offence to obstruct a road. These tossers should get prosecuted. They also could have ruptured a gas main. If I was the driver of that car that will have to wait while they clear the road I would have ripped one of the chainsaws out of their hands and slashed the tyres on both their trucks and chippers. See how they like being inconvenienced. Hiviz on these guys is just for making it easier to find victims.

What? Not one single comment? Sorry to tell you this Paul T (you can probably tell anyway) this thread is dead. Just one cornetto, give it to me! Not a soft dutchman, it's easy. I'll make i swing, through 45 de-grees who needs a SD, and a 180ee?

What a refreshing perspective! My instinct has been that there is no absolute legal duy to keep the road free of obstruction. What you have said backs that up somewhat. After all, the Roads Dept has an obligation to keep the road serviceable, but if you hit a pothole and break an axle you have to show that someone else reported the pothole a couple of months ago and that the Roads Dept has done nothing about it. Back then to my bugbear. If it is not an ofence unwilfully to obstruct the highway with a branch, how can TPO exemption be claimed for preventative pruning?

It's all very well resenting this sort of ill-informed journalism, but is someone going to send a stiffly worded letter to the paper that they can publish, one that will set the record straight? What makes a "bona fide" tree surgeon? I would say qualified, insured, experienced, licensed waste carrier and accountable by having a permanent office base with a land line number.

The tree was an Alder, characteristically going a screaming orange colour when cut. Sorry if you can't make out the tapered hinge.

Here's a couple of pictures of a successful Soft Dutchman from Monday. I have chopped the top off the stump (obviously) to take it home for photos. Looking at it side-on you can see a series of near horizontal cuts. These allowed the butt of the stem to sink temporarily into a soft compressible scoop formed by the overall amount of wood removed by the kerfs. The cuts don't go so far around as they get lower. There is a good reason for this. Imagine you are standing at the base of a gangly tree. The tree leans slightly to your right. You want it to go left. Without wedges or winch or pushing. Let's say it's too big to push and too tall to put a line onto an upper branch to pull. You basically have to put a humboldt sink in 25% (american style, sink is upside down). Then do a deliberate dutchman on the horizontal cut on the side away from you. Just to achieve another 10% of the diameter. Then you have to do a series of progressively less deep cuts into the underside of the sink. See photo Then you have to put your normal back cut in but with a tapered hinge (narrowing away from you). At the last moment and the hardest bit to do is swing the saw round to the offside and cut through the thinnest tip of the tapered hinge. You know this is gouing to trap the bar but it doesn't because of what happens next. Pull the saw out sharpish and stand back and watch... The stem starts to fall right and slightly away from you. Then it's weight causes its butt to sink into the scoop created by all those cuts into the underside of the sink. Those thin layers of wood bend or crack, converting the rightward drop of the stem into an away-from you drop, held by the thickly tapered hinge. By now, you should be marvelling at the graceful arc of the stem as the rightwardward weight converts to leftward momentum. As the stem gets to the most away-from-you point, the slices run out and the scoop gets smaller, eventually turning into a normalish left-sided sink. Now you can watch and wonder as the stem stops going away from you and its weight and momentum pull it round to the left. Then the hinge gives way as normal and the stem plops down on the left side as planned. It's a blessed miracle. Right lean becomes left fell. I am thinking of it this way. The equivalent of a series of cornettos. Each one tricks the stem to go a little further left than it would. But once it starts moving the trickery becomes easier. And when you add up all the tricks, it has gone 180 degrees.

Do you know what the 'fungal pathogen' referred to is?