It is difficult to imagine modern construction today, in which a reinforced concrete beam is not used. Such elements are indispensable in the construction of various kinds of structures and ceilings. Reinforced concrete beams are also used in the construction of airport runways, temporary access roads, and in the construction of bridges. The material used for their manufacture is durable and resistant to many types of impacts, making such floors extremely durable. And the process of their installation is quite fast.
Reinforced concrete beams: production
stretched using jacks. The material is compacted using vibration technology. The solution in the form hardens in about 12 hours, after which the product is taken out into the open air to consolidate its properties.
In the manufacture, one important parameter must be observed: the concrete mixture must be distributed as evenly as possible throughout the entire space of the form. Concrete grade 200 and higher is used to create these products. The finished reinforced concrete beam has a calculated load of more than 450 kilograms / force per square meter.
Varieties of Beam Structures
All modern products are divided into three groups depending on the method of production:
- prefabricated - factory made;
- monolithic - poured at the construction site;
- precast-monolithic.
The most popular type of beams is the assembly structure, which is made from heavy grades of concrete. It is strong enough, has high technical characteristics, and is immediately ready for installation.
Reinforced concrete floor beams GOST 28737-90: construction type
In the construction field, there is a division of beam types by type of construction:
- gable are ordinary and lattice, designated BSD;
- single-pitched reinforced concrete beams are briefly called BSO;
- rafter with parallel belts - BSP, etc.
Foundation Beams
For their production, special grades of concrete are used, which are distinguished by high technical characteristics, or rather, strength and reliability. Such a reinforced concrete beam is widely used in large-scale industrial construction. Ideal for areas where tremors and high seismicity are often observed. This type of beams is designed for very large loads. Their installation provides high-quality waterproofing, completely eliminating the contact of the plates with the ground. Sometimes they are used to mount window and door openings.
Reinforced concrete truss beams
This group combines several types of reinforced concrete beams:
- single slope;
- gable.
According to the configuration of the upper belt, they can be both broken and curvilinear. This type is widely used in roofing, in particular, it is used for the construction of reliable and strong ceilings that must withstand high loads. For example, rooms with crane equipment. These can be enterprises with industrial specialization, large warehouses, agricultural complexes, where unloading / loading of heavy objects is implied, as well as other types of similar work. Rafter reinforced concrete beams are equipped with special rail fasteners that are used to fix equipment.
Rectangular beams
BP is the type of beam most commonly used in construction. The most popular of them are special models that are equipped with a shelf located above or below. The main structural element of the T-shaped section is just such a beam. Reinforced concrete floors (dimensions can reach 24 m) are assembled from spans, the length of which should not exceed 12 meters. In the construction industry, this type is considered the strongest and most powerful. There is also a PSU with an L-shaped section, they are designed to support facades.
It is worth noting that reinforced concrete construction is one of the most promising industries, which has pushed aside the use of bulky solid metal structures and archaic wood. Due to the optimal ratio of cost and quality level, a reinforced concrete beam can rightly be called an ideal material for modern industry.
