Soil Compaction Testing & PE Certification

Fast, reliable, and code-compliant soil testing and PE-stamped certification for your foundation, driveway, or pad.

3–5 field density points
Each site visit includes multiple ASTM D1556 sand-cone density tests across your pad or foundation area to verify uniform compaction.
Laboratory Proctor test
A certified geotechnical lab performs the Standard Proctor (ASTM D698) to establish maximum dry density and moisture correlation for your soil sample.
PE-certified report
Every compaction report is reviewed, signed, and sealed by a licensed Professional Engineer, ensuring compliance with Florida building code requirements.
Flat rate pricing
Transparent, all-inclusive pricing—no hidden lab or travel fees. One fixed cost covers field testing, lab work, and your final certification letter.

Oasis Engineering provides professional soil compaction testing across Florida.

Each project includes field density testing (ASTM D1556), lab verification (ASTM D698), and a PE-stamped report ready for permitting.

🧾 Compaction Testing Options

Service	What It Includes	Purpose / When to Order	Deliverables	Turnaround	Price
Standard Compaction Test & PE Report	3–5 field density tests (ASTM D1556), lab Standard Proctor (ASTM D698), moisture verification, and PE review.	For new foundations, slabs, or structural pads before concrete placement. Required by most building departments.	PE-stamped Compaction Certification Report + Lab Proctor sheet.	7-10 business days	$1,500
Pre-Pour Field Verification	2–3 field density and moisture checks only (no lab test).	For small residential pours or rechecks where a lab Proctor already exists.	Field data summary + PE letter (no lab sheet).	3–5 business days	$450
Re-Test / Follow-Up	1–2 field test points to confirm re-compaction or added fill.	When a previous test failed or additional material has been placed.	Updated field data + revised certification letter.	2–3 business days	$350
Multi-Lot / Subdivision Package	5–10 field density points per day + one shared lab Proctor.	For developers testing multiple lots under the same soil conditions.	Combined PE-stamped report per lot or block.	7-10 business days	$400/lot (5+ lots)

Note: All testing follows ASTM D1556 (Sand Cone Method) and ASTM D698 (Standard Proctor) standards. Each compaction certification is issued by a licensed Professional Engineer and includes verified field and laboratory data. Test points are selected based on site access and soil uniformity. Turnaround times may vary depending on lab processing and weather conditions. ⚠️ NOTE: The Pre-Pour Service ($450) is ONLY for clients who already possess a valid Laboratory Proctor Report for their soil. If you do not have a lab report, you must order the Standard Package.

Start your Order Now Using our Online Form

We currently offer easy online ordering for soil compaction testing and PE certification in all the areas shown above. You can place your order directly through our secure form at oasisengineering.com/soilserviceorder.

For custom engineering projects or services outside these regions, please contact us here and we’ll be happy to provide a tailored proposal.

🔍 About Soil Compaction Testing

Soil compaction testing is a field and laboratory procedure used to determine whether engineered fill or subgrade soils have been compacted to the specified density required for structural support. Proper compaction reduces settlement, prevents cracking, and ensures that the soil will safely support the intended structure or pavement.

Field density measurements are performed in accordance with ASTM D1556 – Sand Cone Method. In this method, a known volume of calibrated sand is used to determine the volume of a test hole excavated in the compacted soil. The mass of the extracted soil sample is weighed and its moisture content determined per ASTM D2216. These values are used to calculate the in-place wet density, dry density, and moisture content of the compacted layer.

The field results are compared to the maximum dry density and optimum moisture content established by a laboratory Standard or Modified Proctor test (ASTM D698 / ASTM D1557). This comparison determines the percent compaction achieved, expressed as a percentage of the laboratory maximum dry density.

Most building departments and geotechnical specifications require a minimum of 95% of the Standard Proctor Maximum Dry Density (ASTM D698) for structural fills and foundations, or 98% of the Modified Proctor (ASTM D1557) for pavement subgrades. Meeting or exceeding this standard indicates that the soil is adequately compacted for construction.

The final Compaction Certification Report issued by Oasis Engineering LLC summarizes the field test results, the corresponding laboratory Proctor data, and the achieved percent compaction. The report is reviewed, signed, and sealed by a licensed Professional Engineer for use in permitting and inspection documentation.

Disclaimer: Testing and reporting are performed in accordance with ASTM standards and based on the conditions observed at the time of testing. Results apply only to the specific test locations and do not represent continuous site monitoring or geotechnical design recommendations. Any deviations or changes in soil conditions after testing may require additional evaluation.