Is there a typical soil resistivity for Houston?+
No citywide value can represent a parcel, substation, route, or facility. Houston projects commonly encounter Gulf Coastal Plain clay, silt, sand, alluvium, and engineered fill. Shallow groundwater, humidity, engineered fill, and seasonal drying can still produce spatial and seasonal variation in field resistivity. Field measurements must be tied to the actual array, location, spacing, orientation, and current condition.
Does Wenner electrode spacing equal test depth?+
No. Larger spacing generally samples a larger earth volume, but spacing is not an exact one-to-one depth. Layering, array geometry, site boundaries, and conductive features affect the apparent response.
What information is needed to scope a Houston survey?+
Send the site plan, survey objective, grounding or corrosion design request, proposed stations and spacings, final grading information, candidate line corridors, utility-clearance responsibility, access rules, schedule, and required report format.
Can Calicore mobilize outside California?+
Yes. Calicore performs project-based Wenner field programs throughout the United States when the station count, spacing, access, schedule, and mobilization are practical.
