What kind of foundation system does your home have? Is it a slab with steel or cable? Perhaps a pier & beam? Is it doing its job? How do you know? How do you repair it? Will it be safe? Can I rely on what my builder or “home” inspector tells me?
A building foundation system separates your home or building from the supporting ground. It prevents your floor, walls and roof from moving along with the soil is sits on, and helps protect you and your family from the outside elements.
Foundation design types vary geographically. Local soil conditions, climate, and material and labor availability influence foundation design styles. Many homes in the Midwest and northeastern part of the U. S. have basements, while southern and western U. S. homes tend to be built atop solid concrete slab-on-grade foundations systems. Both foundation types are functional and respond to the needs of the locality.
Foundation performance varies from house -to-house, and from building-to-building. Foundation failure does not appear to be related to geography or locality. Often, a residential area with expansive soils may be interpreted as an area with a higher than average risk of foundation failure, where the failure is attributed to the poor soil conditions. In reality, the failure is correctly placed upon novice level construction and foundation evaluation techniques.
Foundation and wall cracks may suggest impending problems such as abnormal water infiltration sources or other structural irregularities. If your foundation is too rigid or too flexible, you may see signs of distress like brittle material fractures on the inside or outside of your home. This does not necessarily mean your foundation is physically broken. It may be that your foundation system was simply designed or built incorrectly and its performance is impaired.
But how do you know if you have a problem? What type of inspector should you hire to inspect and determine if your foundation system has problems? To find out, ask your prospective inspector the following questions:
- What is your educational background? (correct answer: I have an accredited engineering degree from a four year college or university);
- What type of foundation inspection training do you have? (correct answer: I have a professional engineering license with the state of ________ and I have inspected over 500 foundations;
- How long have you been designing and building foundations? (correct answer: I have over ten years previous foundation design and construction experience).
If you prospective foundation inspector does not answer these three questions correctly as noted above, then itâ€™s likely that inspector is a novice. Do you really want to trust the most important (and likely most expensive) part of your house or building to a less skilled “home inspector”?
The bottom line is this: If you suspect you may have problems with your foundation, hire a licensed professional engineer to evaluate it. That way, you’ll get a state licensed professional with the best combination of education, training and experience to evaluate your foundation system. Your piece of mind and the health of your foundation system are well worth it.