A flat steel plate used to connect and reinforce structural members at joints, particularly in steel frame construction, trusses, and braced frames where multiple members meet at angles.

A gusset plate is a flat steel plate used to connect and reinforce structural members at joints, particularly in steel frame construction, trusses, and braced frames where multiple members meet at angles or complex intersections. This essential structural component provides a means of transferring loads between connected members while maintaining the integrity and stability of the overall structural system. Gusset plates are typically fabricated from steel plate material and are attached to structural members using bolts, welds, or a combination of both, creating strong, reliable connections that can resist tension, compression, and shear forces in multiple directions.

The primary purposes of gusset plates include connecting multiple structural members at complex joints where standard connections are inadequate, transferring loads between intersecting members in different directions, providing reinforcement at critical connection points to prevent failure, distributing concentrated loads over larger areas to reduce stress concentrations, enabling the construction of efficient truss systems and braced frames, facilitating field assembly of prefabricated structural components, and creating connections that can accommodate multiple load paths and force directions.

Applications of gusset plates in construction include steel truss connections where chord and web members intersect, braced frame connections in seismic and wind-resistant systems, bridge construction for connecting girders, trusses, and bracing members, industrial structures requiring heavy-duty connections for equipment and machinery, tower construction for telecommunications, power transmission, and other vertical structures, retrofit applications to strengthen existing connections or add new structural elements, and specialty structures such as stadiums, arenas, and large-span buildings.

Fun Fact: The term “gusset” comes from the French word “gousset,” meaning “little pouch,” originally referring to a triangular piece of fabric sewn into garments to provide reinforcement. The first major use of steel gusset plates was in the construction of the Eiffel Tower in 1889, where thousands of gusset plates were used to connect the intricate lattice of iron members, demonstrating their effectiveness in creating strong, lightweight structures.

• Bearing Plate
• Double Top Plate
• Kick Plate