Installing a heavy-duty park bench requires a solid, permanent foundation to ensure safety, stability, and longevity. The most critical element is a properly constructed concrete footing. For a standard commercial-grade bench, a foundation of at least 4 inches (10 cm) thick and 18 inches (45 cm) square is recommended, extending below the local frost line to prevent heaving. The concrete mix should be a minimum of 3000 PSI for adequate strength.
The process begins with precise site preparation. Excavate the area, ensuring the ground is level and compacted. Use wooden forms to create the mold for the concrete slab. Before pouring, strategically set heavy-duty anchor bolts or a galvanized steel mounting plate into the formwork. These anchors must align perfectly with the bench's leg mounting points. Pour the concrete, level it smoothly, and allow it to cure fully for at least 48-72 hours before attempting installation.
Once cured, position the bench over the anchors, secure it tightly with corrosion-resistant nuts and washers, and perform a final stability check. This robust concrete base system effectively distributes weight, resists vandalism and tipping, and guarantees your heavy-duty park bench remains a secure public asset for decades. Always consult local building codes and the bench manufacturer's specifications for project-specific requirements.