Tree Cabling Services
in Lakewood & Denver Metro, CO
Handling Tree Trimming And Removal
There are advantages to using dynamic cabling versus steel cabling
The dynamic cabling systems tend to have a slightly higher parts cost, per installation than traditional steel cabling, between 10-20%.
Longevity: Dynamic cabling materials are constructed with synthetic materials such as polyethylene, or polyester. Consequently, they have approximately 10-15 year service life, Steel cable systems, properly designed and installed will usually outlast the trees in which they are installed, although it is arguable whether or not the system as originally installed, will still be viable after 15 years of tree growth.
Dynamic cabling systems are non-invasive (no drilling), require fewer tools to install, and usually can be installed much faster than traditional cabling systems. Through product development it has been shown that dynamic cabling systems perform optimally when installed at approximately two thirds the height of the tree, this provides a balance between the size of the wood captivated by the cable anchors and the leverage provided by being past half the leader length above the leader/trunk connection. The shock absorption provided by dynamic cabling systems cannot be achieved using traditional static cable.
These photos illustrate the consequence of a weak crotch in a tree when artificial support is not implemented. A weak crotch is defined as a crotch that divides into two trunks of approximately the same diameter low in the tree with a lot of canopy/weight above the crotch. As the tree continues to grow, top growth (height), and weight above the crotch increases and thus the force of leverage on the crotch increases indefinitely. In this case the crotch split rendering the tree unsafe and was removed. The second photo shows the trunk literally cleaved in two when the trunk was felled, only the stump was holding the tree together while the tree was standing. This tree would likely have been saved by cabling; a cable connecting the two trunks would resist the leverage exerted on the crotch and prevent the displacement which caused the trunk to split.
This photo depicts a textbook example of a tree with a weak crotch. The first crotch above the trunk divides into two equal size stems down low in the tree.
There is tremendous leverage and strain on this joint. In fact, it appears to have split somewhat and appears to have a hollow in between, decay in between the two stems further exacerbates an already unstable condition.
If the stem on the left split off the tree there is a high likelihood it would impact the house causing considerable damage. This tree should be either cabled or removed for safety.