ETT has
one of the largest ranges of mechanical tree spades in operation
in Australia. The largest
of these is capable of lifting trees with a height of 15 metres,
trunk caliper of 350mm, and weighing up to 6 tonnes. This machinery
is used mainly for off-site transplanting and relocation work.
Larger trees can be relocated with the use of specially designed
moving equipment and cranes. Trees of this size normally require
root preparation over a prolonged period before lifting.
Many of the smaller tree spades are used for lifting the nursery
trees out of the ground in preparation for shipment. Trees are
shipped from the nursery on semi trailers equipped with cranes
to assist with loading and unloading.
The following table, depending on species,
can be used as a guide for root ball sizes
Tree Spade Size |
Tree Trunk Caliper |
Root Ball Diameter |
Root Ball Depth |
18” |
30 to 35mm |
500mm diameter |
300 to 400mm deep |
30” |
40/50/60mm |
750mm diameter |
500mm deep |
33” |
70/80mm |
850mm diameter |
600mm deep |
44” |
90/100/120mm |
1200mm diameter |
750/800mm deep |
65” |
120/200mm |
1500mm diameter |
900/1000mm deep |
92” |
200mm+ |
2250mm diameter |
1250mm deep |
ETT provides an offsite transplanting service. The company
has relocated trees in forests, plantations, city and town re-developments,
domestic landscaping projects, as well as relocating orchards,
groves and vineyards. Most of this work is done with mechanical
tree spades. |
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