ETTL Engineering Services
for Airfield Projects

ETTL offers prime consultants and contractors -- and airfield development and maintenance teams -- the advantages of a highly qualified engineering and technical staff, a full complement of both laboratory and field equipment, including a sizable fleet of subsurface exploratory vehicles, plus the expertise gained from many airfield projects.

ETTL has TxDOT Precertification in a number of key areas. Click here to see listing.

ETTL has carried out both Geotechnical Engineering investigations and Construction Materials Engineering Services (CME) for airfield projects, using testing procedures according to FAA (ASTM) and/or TxDOT procedures (see the two tables at the bottom of this page). Projects have been completed in the recent past at the Ennis, Gilmer, Gladewater, Jacksonville, Longview (Gregg County), Palestine and Tyler (Pounds Field) airports.

In a project at Ennis Municipal Airport, ETTL was called upon by Bucher, Willis & Ratliff Engineers to investigate a problem in heaving (see arrow) and longitudinal cracking of the taxiways and runway. ETTL's duties, among others, called for carrying out 14 test borings plus auguring out nine 25 feet deep ground-water "observation" wells (part of the pavement ran by a relatively nearby lake, though most of the heaving was in portions not near the lake) followed by an analysis to determine the causes of the problem, as well as to develop recommendations for economic remediatory actions. (The canvas in the foreground was part of a large "X" to warn off approaching planes while the project was under way.)

In a typical CME project, in which a heavily used runway at Gregg County Airport was restored using the Remixing-Repaving method, ETTL first took nuclear density readings on the asphaltic concrete of a freshly placed and rolled test strip (photo at left) to determine the maximum number of passes that would be necessary in the project to obtain maximum compaction. Then, as the project progressed, ETTL took core samples from repaved runway portions each day to test for density and thickness, and also daily tested hot-mix samples for asphalt content as well as aggregate gradation. See the table below for typical asphaltic (bituminous) tests ETTL has been carrying out in airfield projects in conformance with TxDOT procedures.

In addition to Geotechnical and Construction Materials Engineering capabilities, ETTL is on hand for Environmental Remediation projects, Environmental Site Assessments (ESAs), as well as a full range of Petroleum Storage Tank (PST) services for airfields.

For in-depth information about ETTL's Construction Materials Engineering Services, click here -- or contact Jack Whilden or Mark Miller — or Steve Burhenn (for our Texarkana services)

For in-depth information about ETTL's Environmental Remediation Services and Environmental Site Assessment Services, click the underlines -- or contact Steve Kennedy or Les Jeske.

For in-depth information about ETTL's PST Services, click here -- or contact Steve Kennedy or Les Jeske.

To see a more comprehensive listing of Bituminous Tests routinely carried out by ETTL in other application areas -- tests that conform with TxDOT procedures -- click the underline. And click these underlines to see similar listings of Soil Tests as well as Portland Cement Concrete Tests that ETTL routinely performs in conformance with TxDOT procedures.

Bituminous tests conforming with ASTM standards that ETTL carries out in airfield projects are listed in the table below.

BITUMINOUS TESTS IN AIRFIELD PROJECTS
PERFORMED BY ETTL'S CONSTRUCTION MATERIALS
ENGINEERING (CME) GROUP IN CONFORMANCE WITH ASTM STANDARDS

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