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APPENDIX 2A
HELICAL PRODUCT RATINGS, PROPERTIES AND DETAILS
Chapter 2
Helical Foundation Systems
HP350 Helix Plate Net Bearing Areas
H-Style Plates
Plate
Diameter
(inches)
Area
(ft
2
)
6
0.13
8
0.28
10
0.48
12
0.72
14
1.00
16
1.33
V-Style Plates
(1)
Plate
Diameter
(inches)
Area
(ft
2
)
6*
0.12
8
0.26
10
0.43
12
0.65
14
0.89
16
1.18
(1)
V-Style plates feature a special cut on the leading edge (or cutting edge). This edge is cut at two successive 45° angles to roughly simulate
a spiral. This is in addition to the 45° bevel on the leading edge which is a standard feature for helix plates of both styles. V-Style plates
are appropriate for use in applications where rocky or rubble-filled soils are anticipated, or where very dense layers need to be penetrated.
Some smaller plate diameters indicated by an asterisk (*), are not typically available in a V-Style.
