cabling gear

treevet

Did some cabling yesterday. Any of you all got any interesting cabling gear?

The white pipe fits over the lag turner and bolts so as not to lose it while turning.

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spartek

Hey Treevet , have you installed any of the "Tree Saver" dynamic systems form Sherrill? I have done 3 this year , the kind with the chokers that are non-invasive. All the trees withstood this years hurricane winds. I highly recommend them. I havn't used the Cobra systems , as I couldn't afford the bulk price for 15 sysetms, the way Sherrill sells them.

treevet

No but may try one sometime if you're telling me that some withstood the hurricanes. Do they flex out to a certain distance and then stop stretching?

Seems like otherwise they would fail for sure, esp. in the hurricanes we (you and I) just went thru. I had a lot of static systems stay intact. Most of mine are lag bolts that are less invasive than the drill thru. I generally go 2/16 (1/8) inch smaller than the bolt instead of 1/16 more commonly used.

spartek

Yes the Tree Saver rope itself is made by Samson(has the rubber core).The key is to leave enough slack so as not to make the tree "dependant" on the cable. You can incorporate a rubber shock absorber in the center of the cable to take up slack. The rubber shock (dampener) takes about three wraps of the rope , and when the rope is pulled ,the wraps payout. These dampeners are used in boat mooring but are perfect for tree systems as well. The last one I installed was in June , The customer was wanting to cut down his 90' maple. I convinced him to cable it and guaranteed the cable to hold under normal storms. He was impressed when it withstood the hurricane winds and three seemingly "rock solid oaks " nearby , all had their tops ripped out. And best of all there is not one metal fastener into the trees tissue. The ckokers used have a canvas tube around them so they can slide without rubbing the cabium. They allow for leader growth and are designed to normally not need any adjustment within ten years of installation.

spartek

But to answer your question Treevet, the tree saver stretches a couple of feet easy, allowing for high wind movement and lessens the chance of leader failure at or above cabling point of attachment. The cable is installed 3/4 distance from crotch to top of sides being joined. The rope comes in 4,8,and 16 ton ratings and Sherrill has some awesome field installation instructions.

treevet

I put in 4 on Sat. They all had to be static because of the level of target and the condition of the co doms. I will try one sometime in the right circumstances.

No big surprise if the oaks were pin oaks and the maples were sugars. Pin oaks...the silver maple of the Oak family IMO. They busted out here more than any other tree couple of months ago.

One of many pin oaks that failed in our town.

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treevet

Also allows for the development of reaction (tension and compression) wood by allowing movement. These trees we did were not permitted any movement.

spartek

Did anyone get hurt from that break-out ? Thats a nice crane to BTW , JLG?

spartek

Confucius say, "Strong wind makes strong timber. But too strong a wind makes strong back"

treevet

Nobody got hurt and we got it off before any structural damage. Very profitable. We just split the wood last week with my TW5 and conveyor.
It is an RO crane. It is a little old but flawless.

I haven't that saying before...I am gonna steal it from ya.

treevet

Wasn't really meaning to make this "another" cabling thread but might give a little cya info....

There is barely a mention of dynamic cabling systems in ANSI A300(Part 3) 06 (most recent- I just got it).

32.9.......CABLE..........1)............4) Sythetic-fiber rope or synthetic fiber webbing. (page 18)

32.26 Loop anchor: A synthetic fiber termination that serves as an anchor.(page 19)

33.5.4 Synthetic cable systems shall have a restraint to prevent movement of the loop anchor and shall not girdle the trunk, limb or branch. (page 21)

These are the only mention of dynamic supports in 30 large booklet size pages describing supplemental support systems. There is no mention of it on page 28 table "minimum hardware size for cabling trees"....NONE. No specs on installation either.

If you are looking to cya in the event of a law suit by following well outlined standards to a T then this IMO is not the system of choice. If a low level of target and very small chance of failure, then....maybe.

No mention of rigguy either....none.