Piers, Piles, Perma This and Cable That

Okay, I’m being cute. I cannot help myself. After reading this page, you’ll know more about piles and piers than many pier salesmen and even some repair company owners.

What is a pier?

Okay, I’m being cute. I cannot help myself. After reading this page, you’ll know more about piles and piers than many pier salesmen and even some repair company owners.

A pier is made of reinforced concrete. To install one, you first dig a hole to the depth of the active soil zone. This is at least eight feet below the ground surface. 

Next, the bottom of the hole is belled. If you watch this video, please note that the bell bottom pier by the speaker is upside down. Note also that the concrete for a pier is placed, not driven.

What is a bell-bottom pier?

The first purpose of the bell in a bell-bottom pier is to spread the load so the soil below does not fail. The second purpose is to prevent the pier from being pushed upward by swelling soil. 

The first purpose applies to what is called repair piers. The second purpose applies to new construction. 

What is a pile?

While bell-bottom piers are placed, piles are driven. What drives the piles is the weight of the concrete slab.

Piles are used only in foundation repair. Never in new construction.

What is Cable Lock, Cable Lock ST, Perma Pile, etc.?

These are all piles. Okay, I’m being cute. I cannot help myself. After reading this page, you’ll know more about piles and piers than many pier salesmen and even some repair company owners.

 

 

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