Any stair higher than a couple of feet off the ground should have a railing on any exposed side. These railings can be constructed out of two by fours for offstage stairs that are hidden from audience view. On-stage railings can be almost as simple if the look is not important, and as complex as any railing in a fancy house. The goal is to provide support for the actor, and make them feel safe when using the stair. Specifically, no warranty is expressed or implied regarding the accuracy of the information contained within.
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