• Value Engineering replacement of Geofoam and Expanded
Shale as lightweight fill
• UL-FGA offered Contractor and DOT cost and time savings
• Compacted UL-FGA thickness varies between 1 and 9 feet,
approximately
• FGA under roadway is topped with 14 inch DGA Subbase
and flexible pavement section
• Pavement has been monitored via survey since installation
and shows no movement
• Subbase placed, compaction of subbase above UL-FGA
achieved with no issues
• Paved, trafficked, monitored
