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Installation Manual 507.6 Series 5004 and 5014 PV PoleTops®
Mounting Pole Requirements
Imperial
Total Design
module wind Hole In-ground Concrete
area speed diameter pole depth volume
60 sq. ft. 90 mph 24 in. 46 in. 12 cu. ft.
60 sq. ft. 120 mph 30 in. 52 in. 21 cu. ft.
70 sq. ft. 90 mph 24 in. 54 in. 14 cu. ft.
70 sq. ft. 120 mph 30 in. 60 in. 24 cu. ft.
80 sq. ft. 90 mph 24 in. 60 in. 16 cu. ft.
80 sq. ft. 120 mph 30 in. 68 in. 28 cu. ft.
90 sq. ft. 90 mph 24 in. 68 in. 18 cu. ft.
90 sq. ft. 120 mph 30 in. 76 in. 31 cu. ft.
100 sq. ft. 90 mph 24 in. 76 in. 20 cu. ft.
100 sq. ft. 120 mph 30 in. 82 in. 34 cu. ft.
The installer is solely responsible for use of these general guidelines. The
following variances can affect your installation:
• The required diameter and depth of the hole depend on soil type. Sandy
soil, for example, requires more concrete.
• The diameter and depth of the hole should also be increased wherever
wind speeds exceed those listed in the table below, particularly if the site
is open and unprotected. Note the wind loading and exposure assump-
tions in the table note below.
• Poles taller than 6 feet (1.8 meters) require that the depth of the hole be
increased.
If in doubt, consult a professional civil engineer who is familiar with local soil condi-
tions and wind loading requirements.
1. Dig the hole at least 4 inches (10 cm) deeper than required under “In-
ground pole depth” in the table below. Fill the extra depth with gravel to
allow water drainage.
2. Take some measure to prevent the pole from turning in the concrete during
high winds.
3. Brace the pole so that it is plumb in the hole. Pour concrete around it,
filling the hole to ground level. Add an inch or two (3 to 5 cm) of extra
concrete above the hole. Trowel the concrete so that it slopes up to the
pole (see table illustration).
4. Allow the concrete to set up for at least 24 hours before installing your PV
Poletop.
In-ground
pole depth
Gravel
C
o
n
c
r
e
t
e
Schedule 40
steel pole
Metric
Total Design
module wind Hole In-ground Concrete
area speed diameter pole depth volume
6 sq. m 150 km/h 60 cm 120 cm 0.34 m3
6 sq. m 200 km/h 70 cm 155 cm 0.59 m3
7 sq. m 150 km/h 60 cm 140 cm 0.39 m3
7 sq. m 200 km/h 70 cm 175 cm 0.67 m3
8 sq. m 150 km/h 60 cm 160 cm 0.45 m3
8 sq. m 200 km/h 70 cm 205 cm 0.78 m3
9 sq. m 150 km/h 60 cm 175 cm 0.50 m3
9 sq. m 200 km/h 70 cm 225 cm 0.87 m3
11 sq. m 150 km/h 60 cm 215 cm 0.60 m3
11 sq. m 200 km/h 80 cm 200 cm 1.00 m3
Assumptions:The pole extends no more than 6 feet (1.8 meters) above ground. Design wind speeds assume 29 psf wind force at 90 mph (150
km/h) and 51 psf wind force at 120 mph (200 km/h), which correspond to Exposure Category C of the International Building Code, terrain that
is flat and generally open extending one-half mile (800 meters) or more from the site in any quadrant.
Mounting pole guidelines for UniRac PV PoleTops®
