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.
Math Symbol for the Intersection of Sets -. 1  D A equals a new set which includes only those common elements which appear in both Set D AND Set A. 2  This is similar to the intersection of two streets. The area of overlap, where the two streets cross one another, is the intersection.