Norman

Helical piles in Norman, Oklahoma

Expansive soil is the main foundation concern in Oklahoma. The Oklahoma Geological Survey notes that more than 75 percent of the state's bedrock units are possible sources of expansive soils, and that smectite clays can swell to 1.5 to 2 times their dry volume when wet. Wet springs followed by hot, dry summers drive repeated heave and settlement under slabs.

Oklahoma's code leaves the frost line to the local jurisdiction in Table R301.2(1), and a FootingDepth compilation lists 18 inches for Oklahoma City and Tulsa. Check Norman's figure with the city. Helical anchors can also resist uplift on carports and outbuildings when an engineer designs them for it.

Helical pile companies serving Norman

One company in the directory is based in Norman.

• B&H Helical Piles: a Norman company that designs and installs helical piles, with more than 40 years of experience stated on its website, plus installation equipment support.

Costs and what to ask

HomeGuide reports typical helical pier costs of about $2,000 to $4,000 per pier installed across the country, with most near $3,000. Oklahoma jobs vary with pier count, depth to stable soil and access. Details are in our helical pier cost guide.

• How deep is the active clay zone on my lot, and is there a soils report?
• Will each pier have a torque and depth record?
• How does the design account for uplift from swelling clay on the shaft, and what galvanizing is used?
• Who pulls the Norman permit, and what does the warranty cover if clay movement continues?

More Oklahoma installers are listed under Oklahoma helical pile installers.