A support beam used in construction.
Definition: In deck construction, a girder is a board or a composite of more than one board that serves as a supporting beam for the deck joists, which meet it perpendicularly. When building a deck that will be adjacent to a house, joists are often attached at the house end using a header board.  A girder is a structural support which is designed to carry transverse loads, and to transfer those loads to vertical supports such as columns. Girders are utilized in the construction of buildings, bridges, and some types of heavy equipment, and they come in a range of styles.  The term girder is typically used to refer to a steel beam. In a beam or girder bridge, the beams themselves are the primary support for the deck, and are responsible for transferring the load down to the foundation. Material type, shape, and weight all affect how much weight a beam can hold. From Wikipedia, the free encyclopedia. A girder bridge, in general, is a bridge that utilizes girders as the means of supporting the deck. A bridge consists of three parts: the foundation (abutments and piers), the superstructure (girder, truss, or arch), and the deck. An AASHTO prestressed concrete girder. A girder is a support beam used in construction. It is the main horizontal support of a structure which supports smaller beams. Girders often have an I-beam cross section for strength, but may also have a box shape, Z shape and other forms. A girder is commonly used many times in the building of bridges, and planes. In traditional timber framing a girder is called a girt. Noun. 1. girder-a beam made usually of steel; a main support in a structure. beam-long thick piece of wood or metal or concrete, etc., used in construction. I-beam-girder having a cross section resembling the letter `I'. girder. n. 1. (Building) a large beam, esp one made of steel, used in the construction of bridges, buildings, etc. 2. (Botany) botany the structure composed of tissue providing mechanical support for a stem or leaf. Full Definition of GIRDER. : a horizontal main structural member (as in a building or bridge) that supports vertical loads and that consists of a single piece or of more than one piece bound together. See girder defined for English-language learners. See girder defined for kids. ADVERTISEMENT Noun. 1. girder-a beam made usually of steel; a main support in a structure. beam-long thick piece of wood or metal or concrete, etc., used in construction. I-beam-girder having a cross section resembling the letter `I'. Translations. girder. n. 1. (Building) a large beam, esp one made of steel, used in the construction of bridges, buildings, etc. 2. (Botany) botany the structure composed of tissue providing mechanical support for a stem or leaf.
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what is a girder