When building a large sign, it's crucial to ensure that the 8-5/8 pipe is adequate for stability, especially in windy conditions like those in Oklahoma. Seeking advice from local sign companies for estimates and insights on appropriate piping is recommended. Observing similar signs in the neighborhood can provide valuable information on effective support structures. Consideration of using two columns instead of one may enhance stability for larger signs. Consulting with a sign company that specializes in larger projects can help determine the necessary specifications for safe installation.