In how many adjacent crossmembers can only one insert terminate?

The correct answer is based on the design and structural integrity of dry van trailers, specifically regarding the crossmembers that support the floor. Each crossmember typically has specific design parameters, including the maximum number of inserts that can terminate at a single crossmember.

In the context of transport equipment standards and trailer design, the maximum capacity for inserting components into adjacent crossmembers is often limited. The design of the floor system is intended to provide robust support while minimizing localized stress concentrations. This ensures that the floor remains stable and safe for the cargo it carries.

Given these design considerations, it is standard practice that only one insert should be allowed to terminate at any specific adjacent crossmember to enhance durability and prevent potential overloading or structural failure. This aligns with engineering principles designed to distribute weight evenly and maintain the integrity of the trailer's structure.

Therefore, the answer that indicates only one insert can terminate in adjacent crossmembers reflects the widely accepted safety and design guidelines in the industry.