Benchmark Service: Construction Phase Services
Issue: The existing concrete pavement at the shipping and receiving docks, as well as the adjacent roadway, exhibited significant deterioration after more than 10 years of use. This included widespread wear and joint failure caused by exposure to heavy truck traffic and water intrusion. The condition compromised operational efficiency, increased maintenance costs, and posed potential safety risks.
Solution: Benchmark's staff consultant was on site full-time to provide comprehensive construction observation and inspection services to ensure the successful rehabilitation of approximately 4,900 square yards of concrete pavement. Key steps included the following:
Subgrade Assessment and Reinforcement:
- The existing pavement was removed, and a proof roll using a loaded dump truck was performed to evaluate the condition of the subgrade.
- While the dock areas required no undercutting, a portion of the roadway had soft subbase material. This required an additional 8 inches of excavation, followed by the installation of a subgrade separation fabric and a new crushed stone base for stability.
Concrete Installation and Reinforcement:
- The new concrete pavement, designed with 8 inches of reinforced concrete, was installed per the specifications and enacted using steel dowel bar baskets and wire mesh for added strength and alignment.
- Quality Control testing throughout the project ensured the concrete's structural integrity and durability.
Enhanced Drainage Solutions:
- To improve long-term performance, Benchmark recommended the addition of drain tile along both sides of the roadway in the low-point area. This underdrain system was installed to manage subsurface water and prevent moisture intrusion.
- Riprap was placed at the pipe outfalls to mitigate erosion, and control joints in the pavement were sealed to further protect the subgrade from water damage.
Grade Adjustments for Improved Surface Drainage:
- The grades were modified where possible, and the catch basins were lowered to enhance surface drainage and reduce standing water, a major contributor to pavement deterioration.
Impact: The rehabilitated shipping dock and roadway now feature a durable, reinforced concrete pavement system, designed to withstand heavy commercial traffic for years to come. Key impacts include the following benefits:
- Extended Pavement Lifespan: Enhanced drainage systems and reinforced concrete will significantly reduce the risk of subgrade instability and water-related wear, ensuring longevity.
- Cost Savings: By staying under budget due to efficient quantity management, funds were redirected toward drainage improvements, eliminating long-term maintenance costs and promoting sustainability.
- Reliable Operations: The upgraded pavement supports the site's operational demands, with reduced downtime and maintenance interruptions, ensuring smooth shipments and receiving processes.
Through expert on-site construction observation and proactive problem-solving, Benchmark has provided the client with a highly durable and reliable infrastructure solution, underscoring our commitment to delivering projects that meet and exceed expectations.
