Long Engineering offers the following Geotechnical and Materials Testing Services:

• Geotechnical site investigation
• Construction materials testing
• Construction inspection
• Laboratory testing

Maynard H. Jackson International Terminal
Embankment and Utilities Relocation - Phase 2
Atlanta, Georgia

The new $1.65 billion Maynard H. Jackson International Terminal at Hartsfield Jackson Atlanta International Airport features a 1.2 million square-foot terminal and concourse complex, 12 wide-body capable international gates, convertible to 16 narrow-body capable gates, In-line baggage screening system, 9 security checkpoint lanes for international departing passengers, 6 security recheck lanes for domestic connecting passengers and 1,100 short-term parking spaces in close proximity to the terminal. 

Long Engineering, Inc. was selected to provide Quality Control and Material Testing for Embankment and Utilities Relocation – Phase 2.  This work encompassed inspections and concrete sampling for the NLVR (Non Licensed Vehicle Roads) Tunnel and the Georgia Power tunnel that contained the primary electrical feed to the terminal, concrete sampling for storm drainage structures, retaining wall footings, compaction testing on embankment, trench backfill and the backfill of an existing 96” storm pipe, inspecting the proofrolling of fill areas, testing of special lightweight soil over existing deep culverts to avoid replacing or reinforcing them, testing of graded aggregate base and asphalt pavement for detour roads and the NLVR, inspection of steel reinforcement and observation of tension testing of lag bolts in the support wall.  One to two technicians were on site full time providing the testing and inspections with senior engineer office oversight for approximately two years.

Noonday Creek Sanitary Sewer Relief Line
Woodstock, Georgia

Long Engineering, Inc. was selected by the City of Woodstock to design and administer the construction contract for 5,346 feet of 42” and 413 feet of 36” sanitary sewer relief line along Noonday Creek. In addition 2,271 feet of 10” force main and 215 feet of 12” gravity sanitary sewer line was installed to transport flows from the relief line to an adjacent basin served by Rubes Creek Wastewater Reclamation center.  The relief line included a siphon under Noonday Creek, a jack & bore under Highway 92 with a 60” casing pipe and a difficult open cut installation through rock beneath the Dupree Road Bridge.

During construction, our geotechnical evaluations were made to classifying rock, observe removal methods and verify pay quantities.  Particular attention was made while rock excavation was occurring under the Dupree Road bridge where rock was removed in close proximity to spread foundations.  Trench stabilization recommendations were made within soft materials adjacent to Noonday Creek where groundwater elevations exceeded trench inverts.  Areas of settlement were observed and monitored at the jack and bore pit at Main Street and during the jack and bore operation at Highway 92.  Recommendations were made as to the corrective action taken to mitigate the settlement. In addition, concrete testing and reinforcing steel inspections were performed throughout the project.