The weight of bar grating can vary significantly depending on several factors, including the material used, the thickness of the individual bars, and the spacing between them. Common materials for bar grating include steel, aluminum, and fiberglass. Steel grating is known for its strength and durability, making it suitable for heavy-duty applications. It typically weighs around 3 to 5 pounds per square foot, depending on its specific design and dimensions. Aluminum grating, on the other hand, offers a lighter alternative, usually weighing about 2 to 4 pounds per square foot. This makes aluminum bar grating an excellent choice for projects where weight reduction is essential.