How should Class A supports be secured to the portable barrier?

Class A supports are designed to provide structural stability to portable barriers, ensuring they fulfill their intended purpose of maintaining traffic control and safety. Securing these supports effectively is crucial to withstand various environmental conditions and potential impacts from vehicles.

Using set screws is the most appropriate method for securing Class A supports to the portable barrier because set screws create a strong fastening through a mechanical connection. They are typically tightened in a way that holds components together firmly, which helps to prevent any movement or dislodgment under load or stress. This mechanical connection is reliable and offers the necessary durability for various traffic conditions.

Other methods, while they may serve specific purposes, do not provide the same level of security and structural integrity. Clamps can be effective for quick adjustments or temporary applications, but they may not be as robust in terms of long-term hold. Adhesives, while they can bond surfaces together, might not withstand the dynamic forces experienced by traffic barriers. Pins can also be used, but they typically allow for more movement than a set screw would, which can lead to instability in certain situations. Therefore, securing Class A supports with set screws ensures both safety and efficacy in traffic control applications.