18
Sectional Monopole Tower Foundation & Installation Manual, Revision A
• Install the second U-Bolt clip as near the thimble as possible. As with the previous U-Bolt clip, tighten the nuts evenly, alternating from one nut to the
other until reaching 30 lb-ft (41 N-m) of torque.
• Install the third U-Bolt clip midway between the other clips and tighten the nuts to 30 lb-ft (41 N-m) of torque.
• Apply a load to the cable equal or greater than the maximum anticipated load (DO NOT USE THE TOWER AND TURBINE AS THE LOAD) and retighten
the nuts to 30 lb-ft (41 N-m) of torque. This step is very important as the cable may stretch and shrink in diameter when a load is applied effectively loos
ing the U-Bolt clip nuts. Note the maximum load the cable will experience is approximately 2400 lb (1100 kg).
Raising the Tower - (continued)
• Connect the second wire rope cable to the base of the gin pole and to the “lifting” vehicle using the shackles provided.
• Start to “raise’ the tower by slowly driving the “lifting” vehicle away from the tower to take the slack out of the cable – keep the vehicle “in line” with the
tower – avoid loading the tower in a lateral direction.
• The vehicle should stop pulling as the end of the gin pole approaches 3-4 ft (1-1.3 m) above ground level. At this point two full size adults can complete
raising the tower by pushing down on the end of the gin pole or by pushing down on the cable.
• Observe that the anchor bolt closest to the hinge pivot axis clears the slot in the tower base. This is normally not an issue unless the anchor bolt projec-
tion from the foundation exceeds 7.5 in (19 cm).
• As the tower nears the fully vertical position it will be necessary to “lift” the gin pole to slow the tower as it assumes the fully vertical position. Two people
are required for this operation.
• When the tower is completely vertical install the remaining nuts and washers to secure the tower to the foundation.
If the tower was raised without the turbine, refer to the section on lowering the tower. If the tower was raised with the turbine proceed to the section on
Leveling the Tower.
CORRECT
6 in (15 cm)
WRONG
WRONG
