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Structural Support Systems – Cabling and Bracing

August 19, 2019 @ 8:00 am - August 20, 2019 @ 3:00 pm
Instructor: Phillip Kelley and Jamilee Kempton CEUs: 12.0 ALMTU / 1.0 B-S, 11.0 B-P

What is structural support and how does it affect tree health and longevity? The Structural Support Systems Workshop will be a 2 day workshop that is lecture based and hands-on. This workshop will cover the ANSI A300 Part 3 Supplemental Support Systems standards that are applied to the installation and maintenance of tree support systems, including cabling, bracing and guying. Various cabling approaches will be discussed such as bracing for split trees, through rods, and outside the box support systems. Static versus dynamic cabling systems will be compared, looking at where, when and why to install each system. Looking at structure support of weakened unions, wind dampening, and supporting abnormal growth structure, we will take a comprehensive approach at the purpose of cabling a tree and which system would likely be most successful. Cabling system construction and installation practices will be discussed to focus on the approach to find the most effective system to fit the tree.

This workshop will cover:

  1. Basic understanding of the ANSI A300 Part 3 Standards
  2. Tree structure and stability, what common structural issues require supplemental support systems
  3. Fundamentals of static and dynamic cabling systems including various configurations, approaches, and outside the box support systems

This workshop also include:

  1. Hands-on dynamic cabling installation practice
  2. Display of static cabling hardware and discussion of different systems and approaches
  3. Field discussion, students will walk through arboretum to identify structural concerns with trees and offer ideas for support systems to mitigate the poor structure or abnormal growth habit.


Location: Washington Park Arboretum, 2300 Arboretum Drive E, Seattle, WA 98112

DAY 1 - Monday, August 19: 8:00am - 3:00pm

  • 8:00am - 9:00am: Introduction - What is structural support and how does it affect tree health and longevity?
  • 9:00am - 10:00am: ANSI A300 Part 3 Standards
  • 10:00am - 10:30am: Break
  • 10:30am - 11:30am: Tree structure and targets, why we install support systems
  • 11:30am - 12:30pm: Arboretum walk and discussion, identify poor tree structure and targets present, will a support system be solution to mitigate structural issues? What system would be most effective?
  • 12:30pm - 1:00pm: Lunch
  • 1:00pm - 3:00pm: Dynamic versus static cabling systems lecture and introduction to hardware

DAY 2 - Tuesday, August 20, 8:00am - 3:00pm

  • 8:00am - 9:00am: Review - What is structural support and why we install support systems
  • 9:00am - 10:00am: Comprehensive approach to dynamic support systems
  • 10:00am - 10:30am: Break
  • 10:30am - 12:30am: Hands-on, installation of dynamic support systems, outside the box approaches, and other considerations
  • 12:30pm - 1:00pm: Lunch
  • 1:00pm - 2:00pm: Static cabling systems, bracing and through rods, installation practices, combination approaches utilizing dynamic and static support systems together, and other considerations
  • 2:00pm-3:00pm: Concluding thoughts and discussion, how to select effective support systems that best fit the tree to mitigate structural issues

What to Bring

  • Personal Climbing Equipment (optional)
  • PPE (hardhat, googles, gloves, boots)
  • A smile and a positive, open mind


Philip Kelley is a lead climber and instructor. He has 26 years in the industry and is a Past President of the Georgia Arborist Association and has been a Certified Arborist since 2000. He is a judge for the ISA North American Tree Climbing Championship and ISA Aerial Rescue International Tree Climbing Championship. He was an instructor with North American Training Solutions. He is a contract climber and owner of Samara Tree Preservation and Training since 2014.

Philip is an ISA Certified Arborist, Certified Instructor for Tree Worker/Climber specialist, Aerial Rescue Technician, Line clearance tree trimmer, Electrical Hazard Awareness, Aerial Lift Specialist, Hazard Tree Assessment, Tree Dynamics and Integrated Risk Assessor, Advanced Chainsaw Safety Cutting & Felling Techniques.  He was a part of the NATS Instructor Intensive Training in 2009, 2015, Chainsaw Train the Trainer in 2014, and Vitality Summit in 2016.

Jamilee Kempton recently moved back to the PNW after living in Hawaii for over 8 years. She is a Washington state native, ISA certified Arborist (WE-9767A) and has been working in tree care since 2012. During her time in Hawaii, she was the head arborist at Lyon Arboretum and later on worked as a production climber for Oahu Tree Works LLC. She studied Urban Tree Care at Windward Community College and completed a BBA at Shidler College of Business. In 2015 she was the women’s world champion at the ITCC in Tampa, Florida. She co-instructs at various PNW-ISA workshops including Emergency Response and Aerial Rescue, Advanced Climbing, and Women’s Tree Climbing. Jamilee currently works as a climbing arborist for Out on a Limb Tree Co in Seattle.

Refund Policy

  • Cancellations made at least 10 days prior to the event will be refunded at 100%.
  • Cancellations made within 5-9 days of the event will be refunded at 75%.
  • Cancellations made within 1-4 days of the event will be refunded at 50%.
  • Refunds will not be made available for no-shows.

Late Registration

  • Participants are expected to enroll prior to the registration deadline.
  • Participants can register at the door of the event only if space is available. Individuals will need to pack their own lunch.
  • Late registration is possible on a space available basis. You can contact our office at (800) 335-4391. There may, or may not be, room available for those who show up without registering ahead of time for the workshop. We encourage you to register for the workshop in advance.

Allied Professionals are members of allied organizations. See our list of qualifying organizations.


Washington Park Arboretum – Graham Visitor’s Center
2300 Arboretum Drive E
Seattle, WA 98112 United States