Home & Living 216°

Home and living in North Texas

Dallas sits on a soil that never quite settles on what it wants to be. Across most of the city, the ground under a house is Blackland Prairie clay, a black, sticky vertisol that swells thick after a wet spring and shrinks back hard and cracked within weeks of a dry August, and soil scientists describe cracks in that prairie clay running more than four inches wide and a foot deep in a normal dry stretch. A house does not sit on ground like that so much as ride it, and the two facts most people notice about living in Dallas, a summer that runs long and hot and a house that occasionally sticks a door or hairlines a wall, trace back to the same clay and the same climate acting on it from opposite directions. This section is built around that overlap rather than around any one of its signs.

The clay itself is not a defect. It is the same soil, thickest where it is called Houston Black, that soil scientists rank among the highest-producing agricultural soils in Texas, and it runs in a belt from north of Dallas down through most of the Interstate 35 corridor. What turns it into a homeowner's concern rather than a farmer's advantage is what happens under a slab that cannot flex the way a cotton field can. The first article here works through the actual mechanism, how a shrink-swell clay moves a foundation, what a licensed inspector is trained to look for when that movement shows up as a sticking door or a hairline crack, and what a foundation watering program is and is not, without turning any of it into instructions for doing the work. That work belongs to engineers and licensed contractors, named by role rather than improvised.

Then there is the climate half of the equation. Dallas summers run hot enough, and long enough, that the electric bill becomes less a monthly surprise than a predictable seasonal cost, and the second article tracks exactly what that cost is, using the delivering utility's own tariff filings and the federal government's own electricity-price data rather than a guess at what a bill usually runs. It is not an article about how to lower a bill. It is an article about why the bill is the size it is, from the delivery charge printed on the bill to the record load the state's grid carried the same summer this section was written.

The last article returns to the clay directly, this time from the other side of the trowel. The same soil that moves foundations also frustrates gardeners, and the same extension offices that publish foundation guidance also publish a planting calendar for exactly this ground and this heat, dated and specific to North Texas rather than lifted from a national seed catalog. Gardening in zone 8b on top of a vertisol is its own negotiation with the same two facts the rest of this section keeps coming back to.

None of these three articles is really about a house, a bill, or a garden bed on its own. They are about the ground Dallas is built on and the sky sitting over it, the two conditions The Dallas Compass keeps returning to because most of what makes living here different from living somewhere else traces back to one or the other, usually both at once.