Structural Fill

Select Fill Supplier & Delivery in Texas

Select fill is the clean, compactable, spec-controlled material that goes under building pads, parking lots, and load-bearing grade. Soil Depot sources select fill to your geotechnical specification and delivers it in commercial volumes across DFW, Austin, San Antonio, and Houston, with the documentation your testing lab needs.

Compacted select fill material for structural building pads

What Is Select Fill?

Select fill is a low-plasticity, well-graded soil chosen for its ability to compact to a stable, load-bearing density. Unlike general fill dirt, it is controlled to a specification: a capped Plasticity Index, a target gradation, and a verified compaction curve. On Texas sites, it is the material engineers call for when native ground, usually high-plasticity expansive clay, cannot safely support a foundation or pavement on its own.

How select fill is specified

There is no single statewide “select fill” product number; the spec is set by your project’s geotechnical engineer. The most widely referenced benchmark is TxDOT Item 132 “Embankment,” whose Type A granular material caps Liquid Limit at 45 and Plasticity Index at 15, with field density tied to PI (98%+ of maximum dry density at PI ≤ 15). The 2021 International Building Code separately classifies a soil as expansive at a Plasticity Index of 15 or greater, which is exactly the threshold select fill is meant to stay under. Material is verified in the lab by Proctor compaction (ASTM D698 / D1557) and Atterberg limits (ASTM D4318).

How we source & deliver it

We maintain active relationships with borrow pits, material yards, and export sites across each metro, so we can match spec-compliant select fill to your project and keep trucks rolling at your required daily cap. Every delivery comes with one point of contact for dispatch and the paper trail your QC process requires. Need to move material the other direction? We also export and haul off surplus dirt.

Where Select Fill Is Used

Building pad sitesParking lotsLoad-bearing gradeSubgrade over expansive claySlab-on-grade prepStructural backfillPavement subbase support

TxDOT Item 132 (Embankment)

Type A select material: LL ≤ 45, PI ≤ 15, density keyed to PI. TxDOT 2024

Lab verification

Proctor (ASTM D698/D1557) + Atterberg/PI (D4318).

Select Fill Across Texas

Delivered by a regional team in each metro:

Dallas-Fort Worth Austin San Antonio Houston

Related materials

Common Fill Fill Dirt Sand & Aggregate Base All materials

Select Fill FAQ

What is the difference between select fill and fill dirt?

Select fill is controlled to a specification, capped Plasticity Index, target gradation, verified compaction, for structural, load-bearing use. Fill dirt and common fill are general-purpose materials for bulk volume and non-structural grading.

What PI does select fill need?

It depends on your geotechnical report, but the common benchmark is a Plasticity Index at or below 15 (TxDOT Item 132 Type A), which is also the IBC threshold for expansive soil. We source to whatever your engineer specifies.

Do you deliver select fill in commercial volumes?

Yes. We supply select fill in bulk for commercial and site-work projects across DFW, Austin, San Antonio, and Houston, with dispatch matched to your daily truck cap. Request a quote with your volume and location.

References

Need select fill?

Send your spec, volume, and job site location. We will source it and get a quote back the same day.

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