What is under concrete in Visalia
| Soil | Share | Drainage | Shrink-swell | Corrosion of concrete | Rating for homes on slabs |
|---|---|---|---|---|---|
| Tagus | 48% | Well drained | Low | Low | Very limitedFlooding |
| Nord | 28% | Well drained | Low | Low | Very limitedFlooding |
| Grangeville | 17% | Somewhat poorly drained | Low | Low | Very limitedFlooding |
| Akers | 8% | Well drained | Low | Moderate | Very limitedFlooding |
The USDA soil survey maps the ground in Visalia mostly as Tagus (48%), Nord (28%), Grangeville (17%) and Akers (8%), based on 25 points sampled across the city.
For shrink-swell, the swelling and shrinking of clay as it wets and dries, Tagus, Nord, Grangeville and Akers are low.
The survey rates the risk of corrosion to concrete as moderate for Akers. The rest are rated low.
Why it matters: USDA’s California soil interpretations rate shrink-swell as low below 3 percent linear extensibility. Every major soil sampled here is in that low band.
USDA says corrosion of concrete is driven mainly by the soil’s sulfate and sodium content, texture, moisture and acidity. NRMCA’s durability guide lists sulfate-resisting cements, such as Type II and Type V, and lower permeability as the way concrete is made to resist sulfate exposure.
Flood zones in Visalia
FEMA’s flood map puts 6 of the 25 land points sampled in Visalia (24%) in a Special Flood Hazard Area, the zone with a 1% annual chance of flooding. By zone: zone X (19) and zone AE (6).
The soil survey also lists flooding as a limit for some of these soils. That comes from the survey’s own flood-frequency class for each soil, which is a separate record from FEMA’s map.
Visalia at a glance
- CountyTulare County
- Land area38.5 square miles
- From Exeter10.4 miles, straight line
- Main soilTagus, 48% of sampled ground
Driveway and sidewalk permits in Visalia
The City of Visalia says an encroachment permit must be obtained before performing work within the city’s right-of-way, and lists sidewalks, curbs and gutters among the infrastructure the permit protects.
Visalia updated its Encroachment Permit Policy Manual on July 31, 2025 and says applications now go through a compliance review for completeness.
City of Visalia Encroachment Permit Office · 559-713-4339
Outside city limits: Tulare County says work performed on a county right-of-way needs an encroachment permit. That covers homes on county roads outside city limits.
More: what drives concrete driveway cost and permits city by city.
Services in Visalia
- Driveway ReplacementOld driveway out, new driveway in. The first job on Tim’s list.
- New Concrete DrivewaysNew builds and existing homes, poured to the garage.
- Stamped and Decorative ConcreteStamped texture, circles, curved borders and seat walls.
- Concrete PatiosBackyard patios, pool surrounds and poured steps.
- Foundations and SlabsHouse slabs, footings and piers for new builds.
Recent Tru Concrete work
Photos are from Tim’s jobs across his service area, not necessarily Visalia.
Tru Concrete also works in
Visalia concrete FAQs
What does the USDA soil survey say about the ground in Visalia?
The USDA soil survey maps the ground in Visalia mostly as Tagus (48%), Nord (28%), Grangeville (17%) and Akers (8%), based on 25 points sampled across the city. For shrink-swell, the swelling and shrinking of clay as it wets and dries, Tagus, Nord, Grangeville and Akers are low. The survey rates the risk of corrosion to concrete as moderate for Akers. The rest are rated low.
Where is Tru Concrete based?
Exeter, California, about 10.4 miles from Visalia in a straight line. Tim drives up to 35 to 40 minutes by freeway for an estimate.
Do I need a permit for driveway work in Visalia?
The City of Visalia says an encroachment permit must be obtained before performing work within the city’s right-of-way, and lists sidewalks, curbs and gutters among the infrastructure the permit protects. Contact City of Visalia Encroachment Permit Office at 559-713-4339.
Is Visalia in a FEMA flood zone?
FEMA’s flood map puts 6 of the 25 land points sampled in Visalia (24%) in a Special Flood Hazard Area, the zone with a 1% annual chance of flooding. By zone: zone X (19) and zone AE (6).