Mid Rail - Stairway Handrailing
A mid-rail is usually referred to as a railing located in between the upper handrailing or banister and the top of the stairway. The picture below provides you with a perfect example of a mid-rail, located between the stairs and the banister.
If you're going to design a stairway and rail system
using a mid-rail design, make sure that you build it correctly. Most
building codes require that you can not push a 4 inch round sphere
through the entire handrailing, anywhere.
To be more specific, make sure that you do not have any areas between your banisters and mid-rails, with a distance of more than 3 - 7/8 of an inch. If you really want to get technical, make sure that you do not have any spaces less than 4 inches.
I realize that you could misinterpret that last paragraph. Let me break it down for you in decimals. You can't have a space less than 3.99999999999999 inches.
Stairway metal handrailing can be built efficiently using mid-rail designs. It's not uncommon to find a set of stairs built out of steel, with a simple mid-rail handrailing design.
Stairs / Stair Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z