A
standard wood column can be used with Perma-Columns, no
expensive treated wood is required.
The
wood column is attached to a steel "U" connection
bracket with 1/2" thru-bolts or 1/4" lag bolts
depending on application and preference.
Every
Perma-Column is made of 10,000 p.s.i. pre-cast concrete.
This is not the standard 3,000-4,000 p.s.i. concrete typically
found in foundations. Strength is not the only benefit
found in this special mix. Microfibers add shock resistance
and durability. Microsilicia enhances flexural/compressive
strength and erosion resistance. A corrosion inhibitor
protects the rebar reinforcement from rusting, and a final
admixture is added to give freeze/thaw protection.
Perma-Columns
innovative uplift anchor eliminates the need for an added
concrete mix in the backfill.