Home – Slab Performance

The purpose of this site is to provide home inspectors and real estate agents with independent, unbiased information about slab-on-ground foundations. The information on this site is intended to be used by licensed real estate agents and TREC inspectors for self-learning and in-house training.

This website is a gold mine of information about slab-on-ground foundations

I know that sounds like I’m bragging, but it is true and a true statement is never bragging. Just stating a true fact.

Why real estate agents & TREC inspectors need this site

I am reminded almost daily that real estate agents and TREC home inspectors know a great deal about Houston area foundations. Unfortunately, much of what they know is wrong. There are two significant reasons for this: misleading advertisements by foundation repair companies and misleading information by, unfortunately, some Texas Professional Engineers.

A site like this is needed precisely because there is so much information out there that is misleading or flat wrong. Bear in mind that I am not trying to make real estate agents or home inspectors into engineers. That is not possible, desirable, or necessary, but most agents and inspectors would benefit from exposure to basic key issues regarding slab-on-ground foundations.

Here is a list of what you will learn on this site

      • How slab-on-ground foundations work to protect the house.
      • Why it is virtually impossible for the swelling and shrinking of expansive soils to cause a house structure to collapse.

Give me ten minutes and I’ll show you that time on this site is time well spent


Foundation measurements are out of tolerance


Foundation performance indicators versus repair indicators



When is foundation repair recommended


Are there any options regarding foundation repair


How the L/360 rule is misused


The L/360 rule goes like this: calculated live load deflection should not exceed 1/360. What this means is that in designing conventional concrete construction, such as for an ordinary slab concrete foundation, the calculated deflection should not exceed one inch for a 30-foot span.

Let’s take an example: ulated   






What you need to know about foundation repair


Recommending impractical repairs




articles tab here or on the menu.

The takeaway

If you read the material on this site, I am convinced you can provide a more professional and better service to your clients while making transactions go smoother and incurring less liability.

How to use this site

First, go to the Articles page and click on any article that appeals to you. Agents might want to start with the article titled Three Errors Real Estate Agents Make. Inspectors might want to start with Two Types of Errors TREC Inspectors Make.

Each article is written so you can read and understand it independently of the others, so you can just dive in anywhere your interests take you.

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