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| Plan the placing of the mast and guy wires, as well as the orientation carefully. All of these affect the placing of the equipment on the mast and the lowering of the mast for maintenance. |
| In Vaisala documentation, the term guy wire is used to refer to both frangible guyings made of glass fiber reinforced plastics (GRP) and guyings made of stainless steel. |
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Mark a location for the first guying foundation on the circle line.
- On the Northern Hemisphere, to the East from the mast concrete foundation.
- On the Southern Hemisphere, to the West from the mast concrete foundation.
Figure 1. Marking first guying foundation on the Southern Hemisphere 
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Mark also the opposite side of the circle. That will be your next center point.
Figure 2. Marking the next center point on the Southern Hemisphere 
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From the new center point, use the string as compass and draw another circle to the
ground.
Mark the places where the 2 circles cross each other. They are the locations for the other 2 guying foundations.
