ULA
PLANNING AND
ASSEMBLY
INSTALLATION MANUAL
PAGE
5
INSTALLATION GUIDE
CONCRETE FOUNDATIONS
Prepare Foundation Holes
Dig foundation holes to the “Footing diameter” and “Footing depth” listed on page 2 of your Specs Sheet.
Ensure holes are dug to the tolerances shown in figure 3. Verify that the footings extend below the frost line.
If shallow ground water is encountered, over excavating 4” and back filling with gravel no smaller than ¼” can
be used to facilitate concrete placement. Concrete can not be placed in standing water.
Prepare Vertical Pipes
At the bottom of the vertical pipes, install a piece of rebar, threaded cap or bolts. This step prevents withdrawal
from the footing. See figure 4.
Pour Concrete & Position Pipes
Using wood braces to position the pipes to ensure they are level , square and aligned. Use a string line, laser
level or transit to level the tops of the pipes down the row. See figure 5.
Place pipes and pour concrete. Shape the concrete to slope away from the legs to promote drainage away from
the pipes. Allow concrete to cure before proceeding. See Figure 6.
Figure-4
Figure-5
Figure-3
Figure-6
SYSTEM LAYOUT
Acceptable Tolerances for
Foundation Holes
Diameter
-1"
Depth
-2"
