Choosing The Site; International Society Of Arboriculture (Isa) Tree Risk Checklist - b4Adventure Slackers Build-A-Branch Manual

CHOOSING THE SITE:

• Do not install home playground equipment over concrete, asphalt, packed earth, grass, carpet, or any other hard
surface. A fall onto a hard surface can result in serious injury or death to the equipment user. Due to the variety of
swing sets and places that this product can be suspended, we must urge caution when attaching the swing to your
structure.
• Protective surfacing under swings is recommended. "To and Fro" swings should have a fall zone extending a
minimum of 6 ft (2 m) from the outer edge of the support structure on each side. The "fall zone" in front and back of
the swing should extend out a minimum distance of twice the height of the swing as measured from the ground to
the top of the swing support structure. Swings should have a minimum of 8 in (20 cm) between them. (ASTM
F-1148-18) The bottom of a swing should not be less than 8 in (20 cm) above the protective surfacing material.
SURFACES: Maximum fall height is 84 in (213 cm), playground surface material should be 8.9 in (23 cm). See
"Outdoor Home Playground Safety Handbook" from the U.S. Consumer Product Safety Commission.
SUPPORT STRUCTURES: Be certain that the overhead structure can support at least 500 lb (227 kg). If attaching
to a tree limb, make sure the tree is alive and healthy.
• Tree should be healthy and have a minimum trunk diameter of 12 in (30 cm) and a maximum diameter of
24 in ( 61 cm).
• Tree assessment shall be carried out before every use. If one or more defects from below checklist is found, the
tree should not be considered healthy and users shall remove the product from the tree to avoid being used.

INTERNATIONAL SOCIETY OF ARBORICULTURE (ISA) TREE RISK CHECKLIST:

• Are there large, dead branches in the tree?
• Are there detached branches hanging in the tree?
• Does the tree have cavities or rotten wood along the trunk or in major branches?
Are mushrooms present at the base of the tree?
• Are there cracks or splits in the trunk or where branches are attached?
• Have any branches fallen from the tree?
• Have adjacent trees fallen over or died?
• Has the trunk developed a strong lean?
• Do many of the major branches arise from one point on the trunk?
• Have the roots been broken off, injured, or damaged by lowering the soil level, installing pavement, repairing
sidewalks, or digging trenches?
• Has the site recently been changed by construction, raising the soil level, or installing lawns?
• Have the leaves prematurely developed an unusual color or size?
• Have trees in adjacent wooded areas been removed?
• Has the tree been topped or otherwise heavily pruned?
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