Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 22)

UT20 and UT30 Tower-based Weather Stations
J-bolt template to the template frame with 7/8-inch screws where holes in
the template overlap the wooden frame.
5. Fill the hole and form with concrete. Screed the concrete level with the
top of the form as shown in FIGURE 7-3. Smooth the concrete around the
three J-bolts and allow the concrete to harden.
It is common for air to be trapped behind the knee portion of
a J-bolt. Use a stick or rod to stir and tamp around each J-
bolt to ensure proper anchoring.
6. Remove the top nuts, washers, and J-bolt template pieces. Leave the two
bottom nuts and one flat washer on each J-bolt. Remove the template
frame and the concrete form.
7. Attach a mounting foot (FIGURE 7-5) to each leg on the bottom section of
the tower with a 3/8-16 x 2.000-inch bolt and washer. Place the bottom
section onto the three J-bolts in the tower base and secure each leg with a
5/8-inch flat washer, a 5/8-inch split washer, and a 5/8-inch nut. Hand
tighten each nut at this time.
FIGURE 7-5. UT20/UT30 mounting foot detail view
CAUTION
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