CASESTUDY SUB-BALLAST REINFORCEMENT R09 effective distribution of the applied loads onto the underlying subgrade soils. Site Conditions: Soils throughout the port facility are highly variable. Relatively competent sands and gravels occur in some areas while other areas are underlain by silts and weathered coral deposits. The weaker soils often contribute to high maintenance costs and premature track failure. Alternative Solutions: Settlement of r

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