Uplift Anchor
(2 x 2 x 8.5 shown)
Column Extender
(12 inch shown)
Wind4Uplift Capacity
In most instances, Perma-Columns will need to meet wind uplift requirements – the ability of your structure to remain attached to the soil profile. There are two ways to achieve this – both methods using the pre-cast hole in the bottom of the Perma-Column.
1. A concrete collar attached by means of either a piece of rebar through the Perma-Column or a bolted on column extender.
2. Uplift anchors bolted to the column with packed fill around posts.
Allowable Unfactored Uplift*
Perma-Column |
Concrete Collar |
Uplift Anchor |
|||
|---|---|---|---|---|---|
| 18" dia | 24" dia | 2 x 2 x 8.5 | 2 x 2 x 12 | 3 x 3 x 12 | |
| PC6300 | 2272 | 3253 | 1908 | 2693 | NA |
| PC6400 | 2257 | 3238 | 2004 | 2789 | NA |
| PC6600 | 2262 | 3243 | 1972 | 2757 | NA |
| PC8300 | 2255 | 3236 | 2005 | 2790 | NA |
| PC8400 | 2236 | 3217 | 2102 | 2887 | NA |
* Units are in pounds
See section 9 of Design and Use Guide for more details.