Benchmark Service: Construction Phase Services
Issue: After pulverization and compaction of a large asphalt parking lot area, heavy weekend rainfall and subgrade moisture made grading operations impossible due to instability. Excavation/undercutting of the area would have been costly and far exceeded the budget of the project.
Solution: Benchmark devised a cost-effective plan to cement stabilize the subgrade, keeping cost within the base contract original budget.
Possible Impact: This was a rare occurrence of unstable pulverized material and outside moisture. The option for it to dry out would have taken too much time and delayed the much-needed area from opening.
| Subgrade is saturated with water. | Subgrade is cement stabilized. |