A straightforward bearing element of buildings, which has the shape of a beam, was called the beam. Its price depends on several factors, the most important of which are material and dimensions. So, for their production, wood, reinforced concrete and iron are used. In addition to materials, these products differ in production technology.
In particular, wooden beams, common for construction in North America and Japan, are used to build wooden-frame houses. They are made from a solid wood timber and the so-called oriented-grown slab. Such plates are characterized by both resistance to external influences and high mechanical strength. The plate is made of coniferous wood, and then a beam is created with its participation. The price in this case is relatively low, since coniferous trees grow rapidly and are inexpensive building materials. There are such brows for 4-7 dollars per linear meter.
Steel double -breed beams can be both rolling and welded. The welded beam is less expensive, the price of which is determined by its geometric dimensions (wall thickness and floor, length). It is produced on semi -automatic lines. Its section can be either constant along the entire length, or alternating. A variable cross section is used when it is necessary to increase the length of the structure of the structure, while saving on the mass of metal structures. Metal beams are sold for weight, cost 1 ton of double -barrel metal products to up to a thousand dollars.
The reinforced concrete beam was widely used in the construction of the load -bearing elements of the building. First of all, they are used when laying the foundation. They can also play the role of supports for floor slabs and material for the construction of walls. A characteristic feature of reinforced concrete beams is the lack of alternative to these products in some types of construction. They are made from heavy high -strength concrete. At the same time use different brands of concrete. During the specific construction, the aggressiveness of the environment is taken into account, based on which the corresponding brand of concrete is selected, from which the beam is made. Its price is determined by dimensions, while the cost of one ton of material is reduced in proportion to the mass of the product. So, for example, an I -bearing reinforced concrete beam weighing 130 kg can cost about $ 40, while a beam of three tons will cost about $ 400.
If you plan a building, then, regardless of the type of house, most likely, you will not be able to do without reinforced concrete brings.
