What is the decorative structure that supports the handrail known as?

The decorative structure that supports the handrail is known as a balustrade. A balustrade consists of a series of vertical posts or spindles, known as balusters, which are placed between the handrail and a bottom rail or the floor. This structure not only serves an aesthetic purpose, enhancing the visual appeal of staircases and balconies, but it also provides safety by acting as a barrier to prevent falls.

In contrast, a handrail assembly typically refers to the components that make up the handrail itself, including the rail and any necessary fittings, but does not include the supporting balusters. A guard rail is generally associated with safety barriers around elevated platforms and is intended to prevent accidental falls; its function differs from that of a balustrade. The staircase frame refers to the structural framework of the staircase, which supports the treads and risers, but does not encompass the decorative aspects involved with handrail support. Thus, identifying the balustrade is essential when discussing the portion of a railing system that mainly provides support to a handrail and contributes to the overall design.