This part of the A300 standards applies to installation and maintenance of tree support systems, including cabling, bracing, and guying. Part 3 Supplemental Support Systems addresses:
- Tools and equipment
- Cabling objectives
- Types of cabling systems
- Bracing objectives
- Dead-end bracing
- Guying established trees
- Guying newly transplanted trees
- Tree-to-ground guying
- Tree-to-tree guying
- Propping trees and branches
- Hardware sizing and selection tables
A300 Part 3 Supplemental Support Systems standards provide four basic cabling methods:
- Direct:Direct cabling consists of a single cable between two tree parts, e.g., two limbs, two stems, or a trunk and a limb.
- Triangular:Triangular cabling consists of connecting tree parts in combination of threes. This method should be preferred, when maximum support is required.
- Box: Box cabling consists of connecting four or more tree parts in a closed series. This system should be used only when minimal direct support is needed.
- Hub and Spoke:Hub and Spoke cabling consists of a center attachment (hub) with spans (spokes) of cable radiating to three or more leaders. Hub and Spoke cabling should only be used when other installation techniques cannot be installed.