Materials Testing
Construction Observation
Quality Assurance/Quality Control (QA/QC) during construction for conformance to project plans and specifications. Includes in-place densities and moisture content of fill and aggregate base course; in-place densities of asphalt concrete; evaluation of footing excavations; field sampling and testing of Portland cement concrete, grout, and mortar; special inspections; and technical reports.
Field Sampling and Testing
Construction material sampling and testing of concrete, mortar, grout, block, reinforcing steel, structural steel, asphalt, soils, fire proofing, and roofing. Capabilities include field density by nuclear methods (ASTM D-2922-91 and D-3017-88), field density by sand cone (ASTM D-1556-90), Portland cement concrete sampling/field testing (ASTM C-31, C-138, C-143, C-172, C-173, and C-1064), sampling/field testing of mortar, and sampling/field testing of grout
Asphalt and Concrete Core Sampling
Sampling previously placed materials to verify design and specification conformance, assist with pavement condition indexing, performance analysis, remedation strategies, and maintenance programs.
Compaction Testing
Field densities of soil, aggregate base materials, and asphalt concrete using nuclear and sand cone methods. Assist with developing compaction procedures, rolling patterns, etc. Field observation, sampling, quality control of foundations, earthwork, pavement and related construction.
Footing Inspections
Observation of foundation excavations to evaluate soil conditions and excavation dimensions, and compare with soils described in soils report. Reinforcing steel inspections.
Pad Certifications
The evaluation of fill sources; full time observation of subgrade preparation and placement of fill materials; testing of field densities and in-place moisture contents; proctor and index testing; and preparation of pad certification reports.
Special Inspection
Measuring size and spacing of reinforcing steel; concrete and grout placement; and sampling and testing of concrete, mortar, and grout.
ADEQ Certification/Engineer of Record
Required for compliance with ADEQ regulations regarding inspection of water and sewer pipelines to assure proper placement and installation for the prevention of leaking hazardous materials into the acquifer. Additionally and in conjunction with this certification, the engineer of record is responsible for the reviewing the filming of the sewer lines, certifying as-built drawings, and providing the written Approval of Construction documentation.
Structural Steel and Fireproofing
Inspection of bolted and welded connections for steel structures, measurement of thickness and density of fireproofing materials, and a variety of other special inspections.
Forensic Evaluations
Special testing capabilities to evaluate distressed structural elements, deteriorating asphalt pavements, and cracked concrete slabs. Professional engineers with over 100 years of combined experience in construction materials.
In-house Soils & Materials Laboratory
The full range of tests to support our geotechnical and materials engineering efforts and field sampling and testing services.
- Moisture-Density Analyses (ASTM D-427)
- Atterberg Limits (ASTM D-4318-93)
- Sieve Analyses (ASTM D-422-63)
- Specific Gravity (ASTM D-1188 and D-854)
- Consolidation (ASTM D-2435-90)
- Collapse Potential (after Jennings and Knight (1956, 1957))
- Expansion Potential (ASTM D-3877-80 (modified for natural soil))
- Hydraulic Conductivity/Permeability (EPA Method 9100)
- Standard and Modified Proctor (ASTM D-698-91 and D-1557-91)
- Compression Tests of Concrete Cylinders (ASTM C-39), Mortar Cylinders (UBC 21-16), and Grout Prisms (UBC 12-18, ASTM C-39).