About Us

HJA’s long history in the North Texas area makes us uniquely qualified to perform the services requested by each client. The professionals at HJA have studied and evaluated soil and rock conditions throughout North Texas for many years and have the background to handle any condition. With more than 70 years combined experience in the North Texas area, the professional team at HJA includes licensed and specialty certified professional geotechnical engineers, engineers-in-training, engineering geologists, ACI certified engineering technicians, and NACE (National Association of Corrosion Engineers) certified engineering technicians. An experienced group of support personnel is included on the HJA Team for providing computer aided design (CAD) services, word processing, human resources, general administration, and accounting services.

All HJA Construction Materials Testing Field Technicians are ACI certified and are skilled in performing standard testing procedures. Several are also proficient in several areas of less standard services, such as NACE certified paint inspections and testing, post-tension inspections and measurements, and floor flatness measurements.

HJA provides an in-house laboratory operated under the guidelines of ASTM E-329. Professional engineers licensed in the State of Texas oversee and review all work performed by the laboratory. All engineering laboratory personnel have been through in-house training programs for performing engineering laboratory tests in general accordance with ASTM/TxDOT/ISRM test procedures.