Also known as angle beams, L-section beams are shaped in a 90-degree angle, and can have legs with unequal lengths, thus giving it its distinct L-shape. This beam is known for its exceptional strength to weight ratio, making it an ideal steel beam to use in residential construction projects. These beams are also used in corners of condominiums and housing, which improves the durability in one of the most crucial parts of a residential building. L-shaped beams can also be used to reinforce other steel beams as well, providing a somewhat clamp-like structure that will help prevent a large steel beam from stress and breakage.