This is a common and important question for anyone installing outdoor benches in public spaces, parks, or commercial areas. The short answer is: Individual anchoring is almost always the required and safer method. Let's break down why.
While the idea of chaining benches together might seem like a efficient shortcut, it presents significant safety and security risks. A chain connecting multiple benches can become a tripping hazard. More critically, if one bench in a chained line is compromised or lifted, it could destabilize the entire row, creating a dangerous situation. For permanent, public installations, individual anchoring is the professional standard.
Proper individual anchoring involves securing each bench directly to a concrete footing or slab using heavy-duty anchors designed to resist uplift and lateral forces. This method ensures each unit is independently stable, meets safety codes, and can withstand attempted theft or vandalism. Materials like galvanized steel anchor bolts set in concrete provide a durable, long-term solution.
That said, "chaining" can refer to a different, acceptable practice: using a security cable or chain *in addition to* individual anchors to deter theft. In this case, each bench is first properly anchored to the ground. Then, a steel cable is looped through a dedicated anchor point on each bench frame and locked. This adds a layer of security but does not replace the primary structural anchor.
Always consult local building codes and the bench manufacturer's installation guidelines. For ultimate safety, stability, and liability protection, individual anchoring is the non-negotiable best practice. Skip the shortcut of chaining benches together; secure each one properly for years of safe use.