Perma-Columns use the latest in self-compacting concrete precasting technology to provide three times the strength of standard concrete. 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. The technology incorporated in our special mix guarantees a lifetime of durability.

The wood column is attached to a “U” shaped steel bracket made of 1/4” steel with 1/2” thru-bolts and 1/4” lags. This bracket is robotically welded to steel reinforcement that runs the entire length of the column. All the steel we use is a premium high strength alloy purchased domestically.

A sleeve is precast in to the base of the column to allow easy attachment of our innovative uplift or extender systems. See optional accessories section for more information.

Perma-Columns have been extensively tested by both Wisconsin and Purdue University. In comparative strength tests, Perma-Columns have proven to outperform the industry standard for wood columns. As a general rule of thumb, Perma-Columns are as strong as the wood they are replacing.
+ download a PDF of the Perma-Column design manual

Model PC8300

Description: 3 ply 2” x 8” column
Weight: 235 lbs
+ download specs sheet

Model PC8400

Description: 4 ply 2” x 8” column
Weight: 290 lbs
+ download specs sheet

Q. Is standard concrete used in making PERMA-COLUMNS?
A. No. PERMA-COLUMNS are poured in a controlled environment using the latest pre-casting and curing technology. Additives are incorporated to enhance strength, density, corrosion and freeze-thaw resistance, yielding a Hi-Dense concrete that has a compressive strength of 10,000 psi. Concrete is the most proven foundation material know to man with centuries of success.

Q. How is the steel "U" bracket attached to the concrete?
A. There are four strands of 1/2" or 5/8" (depending on the model) of weld-grade rebar, robotically welded to the steel "U" bracket running the entire length of the concrete pre-cast.

Q. How is the treated splash board attached to the concrete?
A. The splash board is positioned against the pre-cast concrete column, a 3/16" diameter hole is pre-drilled through the splash board and 2" into the concrete, then a split-drive anchor is driven in to attach.

Q. How deep should PERMA-COLUMNS be placed in the ground?
A. PERMA-COLUMNS are slightly wider in the dimension that resists lateral loads thus decreasing embedment requirements and are generally designed to have a base depth equal to or less than a standard wood column.

Q. How are the galvanized uplift anchors connected to the PERMA-COLUMN?
A. A steel pipe is welded to the base of the four vertical reinforcing rods creating a sleeve in the base of the PERMA-COLUMN that accommodates the bolt-on uplift anchors.

Q. How do PERMA-COLUMNS compare in cost to other concrete foundation alternatives?
A. PERMA-COLUMNS provide the quickest and least expensive concrete foundation for post frame construction. There is no waiting on a concrete sub-contractor to complete his work before the builder moves in. Unlike a monolithic slab, the structure won't "float". Finally, the steel bracket to wood connection is elevated 12" to 16" above the floor.

• Visit the Perma-Column website for more information.