What is the beam?

Box Girder is a type of structural beam used in a construction that is very often made of steel, although in the past iron is commonly used for construction purposes. This type of beam uses one or more closed cells inside the beam for structural integrity, unlike I-Paprsko or H-Papr, which have open ends. The bridge construction will often require the use of a box beam, as well as other structures such as buildings. This type of beam can usually maintain more weight than the i-spy and will be more resistant to torsion damage or twisting. Bridges that curl or bend, especially benefit from this design due to the capacity of the load -bearing box to withstand torsion. Concrete can actually be poured into a suitable shape, usually under the deck of the bridge to add torsion rigidity of the overall structure. The design of the beams in the box can contain only one cell or box, while other DesignSs can contain a system of multiple cells that contain many boxes. The shape of the box is not in ay rectangular; Each box can be narrowed to suit a specific structure design. This is sometimes called the design of the cell beam.

The disadvantages of the box beam can prevent regular use. These rays are generally more expensive to produce and may be more susceptible to rust and corrosion, as the water can begin to join in the beam cell. In the past, several bridges using the design of the beams in the box have collapsed, leading to a reassessment of the usefulness and safety of the design for bridge design. However, many bridges are still built using this technique, without a great safety risk.

The significant advantage of beams is the ability to support a significant amount of weight in the same length compared to the beam I. The structures may therefore be higher, wider or longer using box beams than with other patterns. Multi-cell design can even increase strength even more, allowing you to create a longBridges in wide span. However, bridges and other structures often require more regular control and maintenance to ensure that the beams are still strong, well conditioned and capable of mastering regular tension of the structure. Such inspection and maintenance can be expensive and in combination with the total cost of material production, the structure can be built with such beams.