What minimum diameter must a post have if it is greater than 3 feet in height?

The minimum diameter requirement for a post that is greater than 3 feet in height is based on structural integrity and stability considerations. Typically, as the height of a post increases, the diameter must also increase to ensure that the post can withstand the various forces acting upon it, such as wind load and the weight it supports.

A diameter of 2 1/2 inches is a common minimum standard for taller posts, as it provides adequate strength and resistance to bending and buckling that might occur due to lateral forces. This size helps maintain stability, especially in outdoor settings where posts are subject to environmental factors.

Choosing a diameter less than 2 1/2 inches could compromise the post's ability to remain upright and function as intended over time, particularly when it is exposed to dynamic loads or severe weather conditions. Hence, a 2 1/2-inch diameter is a critical dimension that aligns with industry standards for posts of this height.