Staircases are an essential element of architectural design, providing a means of vertical movement between different levels of a building. While stairs may appear simple at first glance, their construction involves various components that work together to create a safe and aesthetically pleasing structure. One such crucial element is the stair stringer. In this post, we will explore what a stringer on stairs is, how many stringers are typically used, the difference between a stair stringer and carriage, and the different types of stair stringers available.
What Is A Stringer on Stairs
A stair stringer is a structural component that supports the treads and risers of a staircase. It is the inclined member running diagonally along the sides of the stairs, providing stability and load-bearing capacity. The stringer serves as the backbone of the staircase, transferring the weight of those using the stairs to the supporting structure below.
How Many Stringers Do Stairs Have: The number of stringers used in a staircase largely depends on the width and design requirements of the stairs. Typically, staircases have either two or three stringers. A two-stringer system is commonly employed for residential applications, while a three-stringer configuration offers additional strength and stability, often used in commercial or heavy-duty settings. The stringers are placed parallel to each other, with one on each side of the staircase.
What Is the Difference Between Stair Stringer and Carriage
While the terms “stair stringer” and “carriage” are sometimes used interchangeably, they refer to distinct components. The stair stringer supports the treads and risers and is attached to the supporting structure, while the carriage refers to the load-bearing assembly that carries the entire weight of the staircase. The carriage includes the stringers, treads, risers, and other supporting elements. Essentially, the stringer is a part of the carriage system, contributing to its overall stability.
Types of Stair Stringers
There are different types of stair stringers available, each with its own advantages and aesthetic appeal. The two primary types are:
Cut Stringers: Cut stringers are the most common type and are crafted from solid pieces of wood or engineered lumber. They feature visible notches or cuts along the top edge, revealing the shape of each tread and riser. Cut stringers are versatile and can be customized to match various architectural styles.
Closed Stringers: Closed stringers, also known as housed or box stringers, are constructed using solid pieces of wood or other materials that conceal the treads and risers. They have a sleek and modern appearance and offer a cleaner and more streamlined look compared to cut stringers. Closed stringers are often used in contemporary or minimalist designs.
Conclusion
Stair stringers play a crucial role in the construction and stability of staircases. Understanding their purpose and the different types available can help you make informed decisions when designing or renovating stairs. Whether you opt for cut stringers with visible notches or closed stringers for a more modern look, choosing the right stair stringer will ensure both safety and aesthetics in your staircase design.