A joist hanger is a metal bracket or device used to connect a wooden joist to a wooden beam or another support structure in a building's framing system. Joist hangers are commonly used in construction to provide additional support and stability to the floor or ceiling framing.

Joist hangers come in a variety of sizes and shapes to accommodate different types of joists and beams. They are typically made of galvanized steel, which is corrosion-resistant and durable and is designed to be installed using nails or screws.

The joist hanger is attached to the wooden beam or support structure using nails or screws, and the wooden joist is then inserted into the hanger, which holds it securely in place. This connection method provides a strong and reliable connection between the joist and support structure, reducing the risk of failure or collapse over time.

Joist hangers are a critical component of the building's framing system, and it is essential to use the appropriate type and size of hanger for the specific application. Proper installation and use of joist hangers can help ensure the structural integrity of the building and provide a safe and stable environment for occupants.

There are several benefits of using joist hangers in construction, including:

1. Increased strength and stability:  Joist hangers provide a secure and reliable connection between the joist and the support structure, which helps to distribute the weight and load more evenly. This reduces the risk of structural failure, sagging, or collapse over time.

2. Time-saving:  Installing joist hangers is a quick and easy process, compared to traditional methods of connecting joists to beams using nails or bolts. Joist hangers eliminate the need for complex joinery or cutting, making the installation process faster and more efficient.

3. Improved safety:  Using joist hangers reduces the risk of accidents or injuries on the job site by providing a more secure and stable connection between the joist and support structure. This is particularly important for floors or ceilings that will be subject to heavy loads or high traffic.

4. Greater design flexibility:  Joist hangers can be used in a variety of construction applications, including framing walls, floors, and roofs, and can be customized to fit different sizes and types of joists and beams. This allows for greater design flexibility and the ability to tailor the construction to specific requirements.

5. Longer lifespan:  Joist hangers are typically made of high-quality materials, such as galvanized steel, which are corrosion-resistant and durable. This means that they have a longer lifespan than traditional methods of connecting joists, which can degrade over time due to wear and tear or exposure to the elements.