Post Tension Cable Systems: The concrete slab you need when soil conditions are poor 1

It’s exciting to pick out fixtures and finishes for your remodel project or home you have been dreaming about for years. However, your concrete slab doesn’t typically get that same kind of fanfare.

This isn’t surprising. In fact, it’s completely understandable if construction projects aren’t what get you out of bed in the morning 

The reality is even though talking about your home’s slab may not get your blood pumping, it’s still important to have it done right. When poured correctly, it’s the strong foundation that will make your home a place you will love for years to come.

As you probably know already, your slab needs reinforcement to remain strong (most often done with rebar). However, there is another method that also works for reinforcing slabs. 

Post Tension Cable System

Here in Central Texas, we also find success with an alternate method known as a post tension cable system. With this approach, you’ll find a series of tightened steel cables running through your home’s foundation. This tension reinforces the concrete and reduces cracking (especially in areas with poor soil conditions).

Benefits Of The Post Tension Cable System

Let’s break down why the post-tension cable system works and when it’s a good option to consider for your property.

  • It simplifies the installation process.
  • It minimizes displacement due to foot traffic.
  • This style of concrete slab is lighter.
  • This approach alleviates the need to reinforce the area below the slab which can be more expensive for the homeowner.
  • Properties with expansive soil have poor load-bearing capacity. A post-tension cabling system spreads the load of the home over a wider area.

Disadvantages Of The Post Tension Cable System

Not surprisingly, the post tension cable system does have some drawbacks. Here are a few of them: 

  • The complexity of work: The post tension slab can be made only by skillful professionals.
  • Poor workmanship can lead to accidents. 

In general, we love this system for creating a sturdy slab and recommend it, especially in areas with poor soil. 

Of course, pouring a good slab is vital – but it’s just the beginning to building the dome of your dreams. 

If you are building a home in Texas, you may enjoy some of the deep dive blogs from our learning center

Now for the Pro Tip. We always recommend that a home with a post-tension cable system have a clear sign, perhaps stamped into the garage floor, that reminds you or anyone working on your home how it was constructed. We want to ensure the tendons holding the cables in places aren’t damaged during future home projects. A simple sign can help alleviate that potential headache.

It’s also important that you find a way to support your foundation’s cables


If you’ve arrived at a place where you are ready to begin building your new home, consider contacting Design Tech Homes

As a custom home builder in Central Texas, we know your property is an investment that deserves to be taken care of.

Whether you are located in HoustonSan Antonio, or another area we service, we’ll make sure you’re covered from start to finish.

Not sure where to start? Check out our custom home floor plans or request a free quote

Let’s get you that home you’ve been dreaming of!