Field-proven testing and observation to support construction quality, reduce risk, and meet specifications
D.W. Kozera, Inc. delivers a comprehensive suite of construction testing and observation services that help project teams meet structural, safety, and regulatory requirements across a wide range of applications. From foundations and utilities to pavements and slabs, our technicians and engineers provide responsive, field-based support throughout the construction process, working directly with contractors to streamline progress and documentation.
Whether you are breaking ground on a new development or navigating complex staging in an urban corridor, DWK’s integrated testing services help you identify problems early, resolve them efficiently, and stay on schedule.
Core Services
- Deep Foundation Testing and Observation
Non-destructive testing, pile driving observation, and load test coordination for driven and drilled systems. Integrated with value engineering to support performance and cost-efficiency. - Earthwork Testing and Observation
Field services to evaluate subgrade preparation, structural fill placement, compaction, and lift thickness across site development projects. - Compaction (Nuclear Gauge and Sand-cone, Moisture-Density Relationships) Testing and Observation
Field testing to measure in-place soil density and moisture content using nuclear gauge or sand-cone methods, with correlation to laboratory moisture–density relationships to evaluate compliance with project specifications. - Utility Trench Backfill Testing
Compaction testing and placement observation for water, sewer, gas, electric, and telecom trenches. Integrated documentation for utility inspections and QA/QC programs. - Structural Fill and Lift Thickness Verification
On-site evaluation of engineered fill, including moisture-density testing and coordination with grading crews to support uniform soil performance. - Foundation Bearing Surface Inspection
Inspection of footing and mat subgrades for strength, uniformity, and stability to support safe, compliant concrete placement. - Pavement Subbase and Final Surface Evaluation
Testing of subgrade and base courses, observation of paving operations, and verification of surface characteristics to support long-term durability and drainage. - Floor Flatness and Levelness (FF/FL) Testing
Post-placement testing of slab flatness and levelness for commercial and industrial floors using ASTM E1155-compliant methods. Ideal for warehouses, retail, and racking systems. - Concrete and Grout Testing
Field and lab support for concrete pours and concrete grouting, including slump, air, and strength testing and prism samples. - Masonry Grout Testing and Observation (Spread Test)
On-site sampling and testing of masonry grout using spread tests to evaluate flowability and consistency, with field observation to confirm proper placement. - Vibration Monitoring
Real-time monitoring for construction activities such as pile driving, excavation, or demolition. Includes threshold alerts, daily reporting, and underwater vibration services for marine construction.