Professional arborists know that using the right rigging technique can mean the difference between a job well done and a job that takes much longer than intended to complete. Here are 4 tried-and-true methods that professional arborists use to get the job done quickly and safely.
Photo Courtesy of Samson Ropes – www.samsonrope.com
Spider Leg Rigging
When rigging down limbs, it is best to keep them in a horizontal position. Spider leg
rigging is a wonderful way to achieve this goal. It is especially useful when rigging low
hanging limbs that are within close distance to buildings or other objects. Spider leg rigging is often used in conjunction with a speed line, but the spider leg sling needs
to use a smaller diameter of rope than the actual rigging line for safety and efficiency.
Butt tying is a simple form of rigging and proves that the simplest method, when done
correctly can be the fastest and most productive. Arborists who practice butt tying find
that it is most useful when a loop runner is used in combination with a steel carabiner.
The loop rope is attached approximately 2 feet from the butt end of the branch.
The branch is then lowered down by its tips. For the best results make sure the
rigging block is placed high in the tree. The point of placement should be above the
pre-designated drop zone.
As with butt tying, this method is most effective when a loop runner is used along
with a steel carabiner. However, unlike butt tying, tip tying requires the rope to be
attached as far out on the branch as possible; hence the name, tip tying. The tip tying
method encourages the limb to swing around laterally to avoid hitting objects below.
When conventional rigging methods are not the best choice, professional arborists opt to
use speedline rigging. This method consists of the following 3 steps:
- A rigging line is attached either high in the tree that is coming down or a tree behind it.
- A webbing strap (loop runner) is affixed to the branch that is to be manipulated.
- The webbing strap is then attached to a pulley found on the speedline.
When speedline rigging is used, it is important that the line is properly tensioned to
reduce droop so the branch and pulley can run smoothly. A haul line should always be
attached to help control the descent of the branch.
The rigging techniques discussed in this article are used by arborists throughout
the United States and are highly effective for removing dead branches and bringing
down trees. It’s important to keep in mind that these techniques must only be used
by arborists that have the proper training and certification.
Arboring is a dangerous occupation. It requires precise attention to detail and
a high regard for safety. Homeowners that hire professional tree trimmers to remove
dead branches from their trees need to make sure the person working at their home has
a solid safety record to ensure that the job goes as smoothly as possible.
Guest Post written by Tyler Lamb of Excel Tree Care, Cumming, Georgia.
Visit their website at: www.exceltreecare.com.