What is a typical feature expected from top rails in a dry van?

The typical feature expected from top rails in a dry van is high strength. Top rails are a critical structural component that provides significant support and contributes to the overall integrity of the dry van. They endure various stresses such as load weight, environmental factors, and potential impacts during handling and transportation.

High strength ensures that the top rails can support the weight of loaded cargo without deforming or failing, maintaining the van's structural stability. This strength is especially important when considering the dynamic forces that the dry van may encounter during transport. In designs focused on safety and durability, using materials and construction techniques that enhance the strength of the top rails is prioritized.

While flexibility, lightweight design, and low maintenance might be desirable in certain applications, they are not the primary focus when it comes to the requirements for top rails in a dry van. In practice, compromising on strength for the sake of flexibility or weight could lead to detrimental structural failures. Hence, high strength remains the essential attribute for top rails in ensuring the dry van's reliability and longevity.