Franklin County, TN Shrink-Swell Risk

Shrink-swell potential in Franklin County, TN

Low

Soil across 57.9% of Franklin County, TN comes back "Low" in USDA's shrink-swell data, averaging 2.73% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Franklin County, TN - never a reading for one specific parcel. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Franklin County.

Franklin County: the real numbers

Franklin County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

Franklin County's rank among Tennessee counties

Among the 3,085 rated counties on this site, Franklin County, TN ranks 1,389 most-constrained nationally, and 19 of 95 within Tennessee. The county spans 555 square miles, home to 45,137 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Cooper County, MO and Marshall County, AL are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

Elsewhere in Tennessee

Every county in Tennessee is on this site, including Warren County, TN and Sumner County, TN. The full underlying dataset is downloadable directly, one row per county.