Earth and Space News: Cabling and Bracing Support Systems Address Tree Defects and Stresses

Summary: Cabling and bracing support systems address tree defects and stresses, in Introductory Guidelines for Cabling and Bracing in the June 2022 Arborist News.

Propping, guying, cabling and bracing support systems and tree pruning sometimes account for alternatives to the extreme act of tree removal; Wednesday, March 30, 2011, 14:25, image of lumberjack's sectional tree cutting, corner of Bělehradská Street and Weinzigova Street, Prague, Czech Republic: Juan de Vojníkov (Juandev), CC BY SA 3.0 Unported, via Wikimedia Commons

Cabling and bracing support systems address tree defects and stresses, in the article Introductory Guidelines for Cabling and Bracing by University of Massachusetts-Amherst Professor Brian Kane for the June 2022 Arborist News.

The Massachusetts Arborist Association Professor of Arboriculture bares braces, cables, guys, props borne by qualified arborists and trainees onto aboveground, belowground hazard-inspected, obstacle-investigated sites and trees. Arborist experience and judgment and tree age, growing conditions, health and species converge when calculating whether to conduct corrective pruning, construct support systems or cut down. Cabling and bracing support systems deal with physiologically stressful cracked branches and stems; heavily loaded branches; overextended, rubbing branches; and weakly attached branches and codominant stems.

Support-system design specifications elucidate stress-ending, support-enhancing objectives and support-system locations, materials (anchorage, inter- and intra-system connections, quantities, sizes, types), methods (cabling, bracing, guying, propping) and types.

Box, direct, hub and spoke, triangular cabling systems respectively fortify multi-stems, single-branch unions and weak-attachment codominant stems, central leader- or stem-free trees and maximum support-needy trees.

Two-thirds union to branch-end distance (minimally 10 feet [3 meters] from conductive materials and wires) guides where cabling systems go on cable-friendly, large-diameter branches and stems. Decayed, low-density wood never has dead-end anchors, whose lag screws, like through-anchor eyebolts, unlike sling-anchor splices, herald drop-forging, not bending, into an eye or a J. Cabling support-system material is aircraft, common-grade hand-spliceable, extra high strength non-hand-spliceable cable or, with sling anchors, ultraviolet light degradation-resistant cable with such synthetic fibers as polypropylene.

Tree defects and stresses sometimes justify juxtaposing cabling and bracing support systems, both of which join dead-end and through hardware, with the latter judged particularly brace-friendly.

Appropriate angle of drilled holes, correct attachment of one anchor to one cable and proper load-carrying in tension parallel to long axis keep anchor hardware effective.

Cable-stop, dead-end, through anchors respectively like holes 1/16 to 1/8 inches (1.6 to 3.2 millimeters) smaller than thread, larger than anchor and larger than cable diameters. Branches maintaining 10-plus-inch (25-plus-centimeter) diameters, branches or stems manifesting sound- to decayed-wood proportions 70-plus percent of their diameters or low density-wooded species mandate through-anchor hardware only. Sling anchors necessitate no drilled holes even as they need hollow-braid polypropylene ropes that net splice connections into an eye around the needy branch or stem.

Multiple cables obliging more than one anchor per branch or stem obligate hole distances equaling or exceeding occupied branch or stem diameters and occurrences non-vertically aligned.

Tree defects and stresses, tree size and tree structure prompt bracing support systems whose alternating-, crossing-, horizontally parallel-, single- or vertically parallel-rod types presage their positioning.

Single-paired codominants qualify trees under 8-inch (20.3-centimeter) diameters for single rods with larger-codominant diameter-equivalent minimum spacing and second parallel, vertical-aligned rods at or below super-defective unions. Eight- to 20-inch (20.3- to 50.8-centimeter) diameter trees require second parallel, vertical-aligned rods the lesser of 12-inch (30.5-centimeter) or trunk-diameter spacing at or below weak unions. Single-paired, weak-union codominant stems on 20- to 40-inch (50.8- to 102-centimeter) diameter trees and two-plus paired codominant stems respectively suggest alternating horizontally aligned and crossing rods.

Environments, loads, support-system methods and types and tree defects and stresses, growth and species trigger mandatory, periodic inspections of propping, guying, cabling and bracing support systems.

Propping, guying, cabling and bracing support systems, tree pruning and tree removal act as the three main approaches to abolishing or ameliorating tree defects and stresses. Brian Kane, as Massachusetts Arborist Association Professor of Agriculture at the University of Massachusetts, Amherst MA, appreciates pruning according to ANSI A300 Oart 1: Pruning for its association with retained tree benefits and values in rural, suburban and urban ambiences; July 7, 1938, image of member of Kibbutz Na'an pruning a tree by Zoltan (Zvi) Kluger: Government Press Office Photography Department The National Photo Collection, Public Domain, via Wikimedia Commons

Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Image credits:

Gilman, Ed. 2011. An Illustrated Guide to Pruning. Third Edition. Boston MA: Cengage.

Hayes, Ed. 2001. Evaluating Tree Defects. Revised, Special Edition. Rochester MN: Safe Trees.

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Marriner, Derdriu. 22 July 2017. “Commonly Planted, Potentially Phytoremediating Street Tree Species.” Earth and Space News. Saturday.
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Marriner, Derdriu. 17 June 2017. “Root Loss From Root Pruning and Root Shaving of Stem-Girdling Roots.” Earth and Space News. Saturday.
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Marriner, Derdriu. 16 April 2016. “Tree Injection Methods: Treatment Option in Integrated Pest Management.” Earth and Space News. Saturday.
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Marriner, Derdriu. 6 March 2016. “Bare-Rooted Ornamental Urban Transplants: Amendments Against Mortality.” Earth and Space News. Sunday.
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Marriner, Derdriu. 28 February 2016. “Bark Protective Survival Mechanisms Foil Deprivation, Injury, Invasion.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2016/02/bark-protective-survival-mechanisms.html

Marriner, Derdriu. 23 January 2016. "LITA Model: Linear Index of Tree Appraisal of Large Urban Swedish Trees." Earth and Space News. Saturday.
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Marriner, Derdriu. 19 December 2015. “Tree Lightning Protection Systems: Site, Soil, Species True Designs.” Earth and Space News. Saturday.
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Marriner, Derdriu. 24 October 2015. “Tree Lightning Protection Systems Tailored to Sites, Soils, Species.” Earth and Space News. Saturday.
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Marriner, Derdriu. 15 August 2015. “Tree Friendly Urban Soil Management: Amend, Fertilize, Mulch, Till!” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/08/tree-friendly-urban-soil-management.html

Marriner, Derdriu. 13 June 2015. “Tree Friendly Urban Soil Management: Assemble, Assess, Assist, Astound.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/06/tree-friendly-urban-soil-management.html

Marriner, Derdriu. 18 April 2015. “Tree Wound Responses: Healthy Wound Closures by Callus and Woundwood.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2015/04/tree-wound-responses-healthy-wound.html

Marriner, Derdriu. 15 February 2015. “Urban Forest Maintenance and Non-Maintenance Costs and Benefits.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2015/02/urban-forest-maintenance-and-non.html

Marriner, Derdriu. 13 December 2014. “Tree Dwelling Symbionts: Dodder, Lichen, Mistletoe, Moss and Woe-Vine.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/12/tree-dwelling-symbionts-dodder-lichen.html

Marriner, Derdriu. 18 October 2014. “Tree Cable Installation Systems Lessen Target Impact From Tree Failure.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/10/tree-cable-installation-systems-lessen.html

Marriner, Derdriu. 16 August 2014. “Flood Tolerant Trees in Worst-Case Floodplain and Urbanized Scenarios.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/08/flood-tolerant-trees-in-worst-case.html

Marriner, Derdriu. 14 June 2014. “Integrated Vegetation Management of Plants in Utility Rights-of-Way.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/06/integrated-vegetation-management-of.html

Marriner, Derdriu. 12 April 2014. “Tree Twig Identification: Buds, Bundle Scars, Leaf Drops, Leaf Scars.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/04/tree-twig-identification-buds-bundle.html

Marriner, Derdriu. 15 February 2014. “Tree Twig Anatomy: Ecosystem Stress, Growth Rates, Winter Identification.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2014/02/tree-twig-anatomy-ecosystem-stress.html

Marriner, Derdriu. 14 December 2013. “Community and Tree Safety Awareness During Line- and Road-Clearances.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/12/community-and-tree-safety-awareness.html

Marriner, Derdriu. 13 October 2013. “Chain-Saw Gear and Tree Work Related Personal Protective Equipment.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2013/10/chain-saw-gear-and-tree-work-related.html

Marriner, Derdriu. 12 October 2013. “Storm Damaged Tree Clearances: Matched Teamwork of People to Equipment.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/10/storm-damaged-tree-clearances-matched.html

Marriner, Derdriu. 17 August 2013. “Storm Induced Tree Damage Assessments: Pre-Storm Planned Preparedness.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/08/storm-induced-tree-damage-assessments.html

Marriner, Derdriu. 15 June 2013. “Storm Induced Tree Failures From Heavy Tree Weights and Weather Loads.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/06/storm-induced-tree-failures-from-heavy.html

Marriner, Derdriu. 13 April 2013. “Urban Tree Root Management Concerns: Defects, Digs, Dirt, Disturbance.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/04/urban-tree-root-management-concerns.html

Marriner, Derdriu. 16 February 2013. “Tree Friendly Beneficial Soil Microbes: Inoculations and Occurrences.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2013/02/tree-friendly-beneficial-soil-microbes.html

Marriner, Derdriu. 15 December 2012. “Healthy Urban Tree Root Crown Balances: Soil Properties, Soil Volumes.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/12/healthy-urban-tree-root-crown-balances.html

Marriner, Derdriu. 13 October 2012. “Tree Adaptive Growth: Tree Risk Assessment of Tree Failure, Tree Strength.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/10/tree-adaptive-growth-tree-risk.html

Marriner, Derdriu. 11 August 2012. “Tree Risk Assessment Mitigation Reports: Tree Removal, Tree Retention?” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/08/tree-risk-assessment-mitigation-reports.html

Marriner, Derdriu. 16 June 2012. “Internally Stressed, Response Growing, Wind Loaded Tree Strength.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/06/internally-stressed-response-growing.html

Marriner, Derdriu. 14 April 2012. “Three Tree Risk Assessment Levels: Limited Visual, Basic and Advanced.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/04/three-tree-risk-assessment-levels.html

Marriner, Derdriu. 19 February 2012. “Qualitative Tree Risk Assessment: Risk Ratings for Targets and Trees.” Earth and Space News. Sunday.
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment-risk.html

Marriner, Derdriu. 18 February 2012. “Qualitative Tree Risk Assessment: Falling Trees Impacting Targets.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2012/02/qualitative-tree-risk-assessment.html

Marriner, Derdriu. 10 December 2011. “Tree Risk Assessment: Tree Failures From Defects and From Wind Loads.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/12/tree-risk-assessment-tree-failures-from.html

Marriner, Derdriu. 15 October 2011. “Five Tree Felling Plan Steps for Successful Removals and Worker Safety.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/10/five-tree-felling-plan-steps-for.html

Marriner, Derdriu. 13 August 2011. “Natives and Non-Natives as Successfully Urbanized Plant Species.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/08/natives-and-non-natives-as-successfully.html

Marriner, Derdriu. 11 June 2011. “Tree Ring Patterns for Ecosystem Ages, Dates, Health and Stress.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/06/tree-ring-patterns-for-ecosystem-ages.html

Marriner, Derdriu. 9 April 2011. “Benignly Ugly Tree Disorders: Oak Galls, Powdery Mildew, Sooty Mold, Tar Spot.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/04/benignly-ugly-tree-disorders-oak-galls.html

Marriner, Derdriu. 12 February 2011. “Tree Load Can Turn Tree Health Into Tree Failure or Tree Fatigue.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2011/02/tree-load-can-turn-tree-health-into.html

Marriner, Derdriu. 22 December 2010. “Tree Electrical Safety Knowledge, Precautions, Risks and Standards.” Earth and Space News. Saturday.
Available @ https://earth-and-space-news.blogspot.com/2010/12/tree-electrical-safety-knowledge.html

Scharenbroch, Bryant; Eric Kramer; Matthew Soule; Ted Hartsig; and Stephanie Hsia. April 2022. "You Need to Assess Soil and Here is How to Do It!" Arborist News 31(2): 12-18.

Earth and Space News

Saturday, June 25, 2022

Cabling and Bracing Support Systems Address Tree Defects and Stresses

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