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P a g e
At this stage it's very important to decide which direction the tower will be raised and lowered. You
cannot change this afterwards without moving all the perimeter ground anchors. If on a particular
site it is difficult to drive the central anchor in vertically because of ground conditions, any slight
angle in the bracket fixed the anchor will dictate the raising and lowering direction.
Note that the tower must raise and lower towards one of the corner anchors – this is important as
an attempt to raise or lower in any other direction could be dangerous.
Once the central anchor location is chosen and anchor driven in to the ground use the 3m length of
string to locate corner anchor A2 (on the above diagram) and install this anchor.
For the remaining 3 anchors use the 3m string to ensure that the distance from the central anchor is
consistent to avoid problems with guy rope lengths and that the anchors are positioned accurately in
a square pattern with an anchor in each corner. The distance from anchor A2 to A3 is 4.25m.
All corner ground anchors must be driven in to the ground by their full lengths to gain maximum pull
strength capacity. The central anchor is in compression due to the weight of the tower and turbine.
Step 2 – Fitting Ground Brackets
When all ground anchors are installed fit the central hinge bracket P0227 using the supplied M16
screw and washer, as with all the fixings use a small amount of medium strength thread lock
adhesive on the screw thread to prevent the fixing loosening over time. This bracket forms a hinge
with the mast and will need to be positioned in line with the direction that the tower will be raised.
Next, install the 3 guy rope / ground anchor fixing brackets to the 2 corner ground anchors that are
not in the direction that the tower is to be raised and the remaining bracket to the corner in which
Ground Anchor
(Below Ground Level)
Bracket P0227
Note! Hinge Direction
