5 minute planning guide

Select fill vs. fill dirt in North Texas

Structural fill, landscape grading soil and planting soil are different purchases. Choose against the project requirements, not the cheapest soil name.

A product name is not an engineering approval

Select fill is a purchasing description for soil selected to meet defined characteristics. The applicable plasticity, gradation, organics and compaction criteria come from the project requirements and current source testing.

A PI target such as 7–15 may appear in purchasing discussions, but it is not a universal requirement for every North Texas foundation or pad. Do not treat a catalog name or an illustrative photo as proof of a laboratory result.

  • Send the engineer's specification before requesting an engineered-fill quote.
  • Ask which source and stockpile the current report represents.
  • Confirm testing frequency, acceptance criteria and who approves substitutions.

Common fill is a different category

General fill dirt may be considered for nonstructural grading and backfill where its characteristics are acceptable. Its clay content, stones, moisture, organics and consistency can vary.

Do not use common fill as engineered pad material solely because it appears compactable. Conversely, an engineered material may be unnecessary for a landscape area with different requirements. Establish the intended use before comparing prices.

Sandy loam and topsoil belong to the landscape conversation

Screened sandy loam is often considered for landscape grading, turf preparation or leveling. Screened topsoil and garden blends serve planting and finish-grading needs. Screening changes particle selection; it does not create a guaranteed soil recipe or structural certification.

For planting, consider the existing soil, drainage, organic content and plant requirements. For lawns, confirm the turf provider's recommended material and application depth. A heavy layer of an unsuitable material can change drainage rather than solve it.

  • For planting blends, ask for available pH, nutrient and source information.
  • For grading soil, identify finished elevation and drainage requirements.
  • Keep structural fill and organic planting amendments separate in the scope.

Moisture, placement and testing matter after delivery

Even an acceptable source material needs appropriate placement. Lift thickness, moisture conditioning and required compaction are installation decisions that should follow the project specification.

Delivered tons do not establish the final compacted volume. Loose density estimates are useful for planning, but moisture and the finished section affect quantity. Review both the purchase unit and the installation assumptions before ordering.

What to include in a fill request

Give dispatch the intended use, material specification if one applies, quantity or dimensions, jobsite ZIP and access constraints. Identify whether laboratory reports or a material submittal are needed before delivery.

NTM's fillable submittal and laboratory-request templates can organize the request. The forms themselves are not test reports, approvals or certifications. Source-specific documents must be obtained and reviewed for the actual project.

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