What is an iron girder?
A girder is a beam that is used in bridges and buildings as the main horizontal support. It can be of wood, reinforced concrete, steel and in the case of an iron girder, of iron. A girder is the main horizontal beam; any additional beams mostly pass perpendicularly from the girder.
What is a girder in a bridge?
Girder bridges are the simplest bridge type in structure and consist of steel beams shaped to an I-section or box section, called a plate girder bridge or a box girder bridge, respectively. Girder bridges are comprised of deck slabs, on which vehicles and people pass, and of main girders supporting the deck slabs.
What are girder bridges used for?
Girder bridges are most commonly used for straight bridges that are 33-650 feet (10-200 m) long, such as light rail bridges, pedestrian overpasses, or highway fly-overs.
How do girders work?
A girder is a primary beam. Its main job is to transfer loads to the columns upon which it rests. Its main job is to transfer its loads to girders, which then transfer the load to the columns. Beams bend to accommodate shear stresses, while girders are more stiff to support the small beams.
What are the types of girders?
A girder bridge is a bridge that uses girders as the means of supporting its deck. The two most common types of modern steel girder bridges are plate and box….Girder bridge.
| Two different girder bridges. The top is a plate girder bridge, while the bottom is a concrete girder bridge. | |
|---|---|
| Ancestor | Beam bridge |
| Design effort | low |
What is the difference between beams and girders?
The main difference between a girder and a beam is the size of the component. In general, workers in the construction industry refer to large beams as girders. If it is the chief horizontal support in a structure, it is a girder, not a beam. If it is one of the smaller structural supports, it is a beam.
What is Irn Bru girders?
Irn-Bru’s advertising slogans used to be ‘Scotland’s other National Drink’, referring to whisky, and ‘Made in Scotland from girders’, a reference to the rusty colour of the drink; though the closest one can come to substantiating this claim is the 0.002% ammonium ferric citrate listed in the ingredients.
Where box girders are used?
A box girder bridge is one in which the principal structural element is one or more closed cells, acting in bending. Box girders are used for highway bridges, railway bridges and footbridges – different structural forms are chosen for each of these applications.