3.4.4
Staking and Guying
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NOTE: The current trend in the horticultural trade
has established that staking and guying trees should
not be provided unless there is high wind velocity
at the project site. However, on military projects
staking and guyes serve and additional function of
protecting the tree during establishment. The
current trend in the horticultural trade has
established that tree wrap should not be provided
unless wind conditions require protection to the
trunk.
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Staking will be required when trees are unstable or will not remain set due
to their size, shape, or exposure to high wind velocity. When required the
following staking and guying procedures shall apply:
3.4.4.1
One Bracing Stake
Trees 1200 to 1800 mm 4 to 6 feet high shall be firmly anchored in place
with one bracing stake. The bracing stake shall be placed on the side of
the tree facing the prevailing wind. The bracing stake shall be driven
vertically into firm ground and shall not injure the ball or root system.
The tree shall be held firmly to the stake with a double strand of guying
material. The guying material shall be firmly anchored at a minimum 1/2
tree height and shall prevent girdling. A chafing guard shall be used when
metal is the guying material.
3.4.4.2
Two Bracing Stakes
Trees from 1800 to 2400 mm 6 to 8 feet height shall be firmly anchored in
place with 2 bracing stakes placed on opposite sides. Bracing stakes shall
be driven vertically into firm ground and shall not injure the ball or root
system. The tree shall be held firmly between the stakes with a double
strand of guying material. The guying material shall be firmly anchored at
a minimum 1/2 tree height and shall prevent girdling. Chafing guards shall
be used when metal is the guying material.
3.4.4.3
Three Bracing or Ground Stakes
Trees over a minimum 2400 mm 8 feet height and less than a maximum 150 mm 6
inch caliper shall be held firmly in place with 3 bracing or ground stakes
spaced at equal intervals around the tree. Ground stakes shall be avoided
in areas to be mowed. Stakes shall be driven into firm ground outside the
earth berm. The guying material shall be firmly anchored at a minimum 1/2
tree height and shall prevent girdling. For trees over a minimum 75 mm 3
inch diameter at breast height, turnbuckles shall be used on the guying
material for tree straightening purposes. One turnbuckle shall be centered
on each guy line. Chafing guards shall be used when metal is the guying
material.
3.4.5
Deadmen or Earth Anchors
Trees over a minimum 150 mm 6 inch caliper shall be held firmly in place
with wood deadmen buried a minimum 900 mm 3 feet in the ground or metal
earth anchors. Multi-strand cable guying material shall be firmly anchored
at a minimum 1/2 tree height and shall prevent girdling. Turnbuckles shall
SECTION 02915
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