The structural integrity of the railing depends heavily on the posts that support the rail structure. These posts should be no farther apart than six feet on the flat deck and no farther apart than 5 1/2 feet on stairs. Your local building department might require closer post spacing for added rail strength.
An intersection is an at-grade junction where two or more roads meet or cross. Intersections may be classified by number of road segments, traffic controls, and/or lane design. This article primarily reflects practice in jurisdictions where vehicles are driven on the right.
Road segments. One way to classify intersections is by the number of road segments (arms) that are involved. A three-way intersection is a junction between three road segments (arms): a T junction when two arms form one road, or a Y junction â the latter also known as a fork if approached from the stem of the Y.