Designer Guidelines & Considerations

Tree Sizes

• Is there accurate information regarding the overall HEIGHT and CIRCUMFERENCE of the trees at 1m from the rootball?
• What size sail area do the trees have?
• Are they coniferous or deciduous?

Root Structure

• The trees should be properly rootwrapped or container grown and of sufficient strength and proportion to support an underground fixing method. If not, then an above ground guying system such as the ‘G’ or ‘CG’ systems should be specified.
• When pushed does the stem move while the rootball or container does not? If so, you cannot use an underground fixing method. An above ground guying system should be specified.

Site Location

• Where are the trees to be planted?
• What is the site's exposure to winds and heavy rainfall?
• Is there good accessability to the planting area?
• Has an anchor test been carried out?

Soil Conditions

• Is the site unconsolidated, normal, disturbed or made up ground?
• Have large amounts of top soil been brought in to create planting areas and changes in the profile of the landscape?
• Is the site on an old previous structure where the ground contains rubble and broken concrete?
• Has any landfill been done on any areas of the site?

Buried Services

• Has the planting area been checked for all underground services, such as drains, water, gas, electricity or fibre optic/telecom cables?
• Buried Services are normally identified within 600mm of the surface. Generally, the rootball depths will exceed this. If services are known to be present, recommend an alternative system such as our deadman fixing system.
• If in doubt suggest a CAT scan of the tree planting pit and the surrounding area.

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