Vertiv
|
XTE 802 Series Walk-In-Cabinet (WIC) Description & Installation Manual (631-205-434)
|
Rev. D
59
The helical foundation is designed to minimize soil disturbance and time involved for installation compared to
other types of foundations. The torque value of a properly installed helical is a minimum of 3,000 foot-pounds
and a maximum of 15,000 foot-pounds. In the event the helical foundation cannot be installed per the standard
procedure above, one of the following Alternative Procedures should be used.
Alternative Installation Procedure #1 (6 Inch Auger)
1.
Using a 6 inch auger, drill to a depth of 5 to 7 feet while minimizing enlargement of the bore. Drill the
pier into the hole using the standard methodology and parameters.
2.
Fill and tamp any space around the top of the helical with dirt or small gravel.
Alternative Installation Procedure #2 (New Location/Alter Helical)
In the event the base-plate is more than 11 inches above grade, due to subsurface conditions including bedrock,
boulders and other immovable objects;
1.
Consider changing the location several feet while maintaining the required minimum antenna separation
requirements. Follow the steps of appropriate procedures above.
2.
Cut the top plate off the helical, cut the helical at the appropriate height, and weld the top plate back to
the helical.
3.
Cut the helical at the appropriate height and install a fitted cap plate onto helical. Holes will need to be
drilled to secure the cap plate to the helical.
Figure 25:
Generator Helical Foundation Kit Up to 20 KW
