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APPENDIX 2A
HELICAL PRODUCT RATINGS, PROPERTIES AND DETAILS
Chapter 2
Helical Foundation Systems
HP662 Helix Plate Net Bearing Areas
H-Style Plates
Plate
Diameter
(inches)
Area
(ft
2
)
10
0.31
12
0.55
14
0.83
16
1.16
V-Style Plates
(1)
Plate
Diameter
(inches)
Area
(ft
2
)
10*
0.29
12
0.51
14
0.77
16
1.06
(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.