Final answer:
Concrete pumping systems require supports capable of handling more than the expected load; a typical safety margin might be 125%, although the exact overload percentage can vary by design standards and local regulations.
Step-by-step explanation:
Concrete pumping systems using discharge pipes should be provided with pipe supports designed for a specific percentage of overload to ensure safety and structural integrity. While the specific percentage is not provided in the question and can vary based on local regulations and engineering standards, it is common practice to design support structures to handle a significant overload to account for unexpected stresses and ensure reliability.
For example, a common engineering practice might involve designing pipe supports to withstand at least 125% of the expected load, though the exact value could be higher depending on the application. By adhering to such safety margins, engineers can minimize the risk of failure due to overload.