Lampasas County, TX Shrink-Swell Risk
Lampasas County, TX's soil, for shrink-swell risk
Moderate
Lampasas County, TX: USDA's soil survey rates 60.9% of the county "Moderate" for shrink-swell potential (3.42% linear extensibility). Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
What Lampasas County's reading doesn't cover
Two lots a mile apart in Lampasas County can carry different soil, even though they share one countywide reading. 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 Lampasas County.
What it costs to find out, versus to ignore it
With Lampasas County, TX rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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.
Lampasas County's rank among Texas counties
Nationally, Lampasas County, TX is the 894-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 165 of 253. Lampasas County, TX is 713 square miles with a population of 23,539.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Putnam County, TN and Colfax County, NE 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
More of Texas
Every county in Texas is on this site, including Yoakum County, TX and Reeves County, TX. The full underlying dataset is downloadable directly, one row per county.