Buildings With Post-Supported Roof Overhangs and Porches

Post frame allows for added design elements.

The spacing of posts used to support a building’s porch, roof overhang and/or arcade (an arcade is a walkway at the edge of a building that has a cover supported by posts) is generally in the 6 to 10 foot range regardless of the building’s structural framing/support system.

Post frame provided a quick cost effective method to build a press box for one high school.
Post frame provided a quick cost effective method to build a press box for one high school. See more post frame projects »
 

Given that this spacing is typical of the post spacing in most post-frame buildings, there are benefits to using a post-frame building system any time a building features a relatively long post-supported porch, roof overhang or arcade.

First, it increases the likelihood that all building support elements will be on similar footings.This speeds construction and minimizes the likelihood of differential settlement.

Second, posts used to support a porch, roof overhang or arcade may be aligned with - and then connected via - rafters to posts in the exterior wall to form a more efficient structural frame (figures 20 and 21).