Cripple studs, also known as cripple walls or cripple jacks, are an essential component of framing in construction. They are vertical members that are installed between the top and bottom plates of a wall, providing support and stability to the structure. Cripple studs are typically used in non-load bearing walls, but they can also be found in load-bearing walls in certain situations.
The term “cripple” in cripple studs comes from the word “crippled,” which means to weaken or disable. In construction, cripple studs are used to fill in the gap between the top and bottom plates of a wall, which would otherwise be left unsupported. They are usually shorter in length compared to regular studs and are installed horizontally between the top and bottom plates.
Cripple studs are most commonly used in walls that are not full height, such as those above windows, doors, or other openings. These walls are known as “pony walls” or “half walls” and are typically found in basements, attics, or other areas where the ceiling height is limited. Cripple studs are also used in walls that are adjacent to staircases, as they provide support for the stair framing.
One of the main functions of cripple studs is to transfer the load from the top plate to the bottom plate, ensuring that the weight of the structure is evenly distributed. This helps to prevent the walls from sagging or bowing, which can lead to structural issues. Cripple studs also help to distribute the load from the roof or upper floors to the foundation, providing stability to the entire structure.
In addition to providing support, cripple studs also serve as a nailing surface for the interior and exterior wall coverings. This is especially important in walls that are not full height, as they may not have enough space for the required number of nails to secure the wall covering. Cripple studs also help to prevent the wall covering from sagging or bulging, ensuring a smooth and even finish.
Cripple studs are typically made of the same material as regular studs, such as wood or metal. The size and spacing of cripple studs may vary depending on the specific building codes and structural requirements of the project. In general, they are installed at 16 inches on center, just like regular studs, but this may vary depending on the size and weight of the structure.
It is important to note that cripple studs should not be confused with jack studs, which are also used in framing. Jack studs are longer and are installed vertically next to door or window openings to provide support for the header above. Cripple studs, on the other hand, are installed horizontally and are used to fill in the gap between the top and bottom plates.
In conclusion, cripple studs are an essential component of framing in construction. They provide support and stability to walls that are not full height, ensuring that the weight of the structure is evenly distributed. Cripple studs also serve as a nailing surface for wall coverings and help to prevent sagging or bowing. It is important to follow building codes and structural requirements when installing cripple studs to ensure the safety and stability of the structure.
What are cripple studs?
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