Ventilation unit - reinforced concrete construction, which is widely used in the field of construction of residential and public buildings. By installing ventilation units, it becomes possible to organize simple and efficient ventilation of kitchens, bathrooms, and other utility rooms.
Specifications
Separate ventilation units differ in both physical indicators and dimensions. The necessary parameters of the ventilation units are determined in each case by their purpose.
The standard height of individual types of material can vary from 2500 to 3500 mm. The strength parameters of ventilation blocks depend on the materials that are used in their manufacture.
Materials and manufacturing methods
Currently, several basic types of ventilation blocks are produced: concrete, reinforced concrete, expanded clay concrete. These types of materials differ in the following qualities and manufacturing methods:
- Concrete products are produced by vibration pressing from concrete mixtures, where sand is used as the main component. As a result of the addition of a number of special additives, such blocks acquire increased strength.
- Reinforced concrete ventilation blocks are made by pouring metal reinforcement with heavy concrete mixture. Inside such products have several auxiliary and one main exhaust channel.
- The main difference between expanded clay concrete blocks and previous types of products is the use of a lightweight concrete base with expanded clay content. Due to the high level of mechanical resistance and universal characteristics, such blocks are realized not only when creating natural ventilation in the walls of buildings, but also used as barriers for communication wires.
Application features
The ventilation unit can be used to perform a wide variety of tasks in construction and repair. This is facilitated by the presence of various types of material, which vary according to size, shape, strength indicators.
There are quite convenient prefabricated ventilation units, specially designed for installation in rooms of a specific purpose. For example, to equip an insulated or insulated attic space, several modifications of prefabricated ventilation units can be used. The choice of such materials in each case depends on the existing tasks and working conditions.
For the construction of buildings in seismically active regions, it is advisable to use a ventilation unit with a structure reinforced with reliable reinforcement and other reinforcing elements. At the same time, the use of ventilation units in buildings, the number of storeys of which does not exceed the figure of 25 floors, is allowed.
If you have to provide natural ventilation during the construction of a private house, designed according to the original, non-standard plan, in this case it is quite realistic to make specific ventilation units with special parameters to order.
Marking
To simplify the choice of ventilation units, products with different characteristics are assigned their own, special marking. Fan blocks are marked according to simplified schemes.
The designation "WB" in the name of the product indicates a rounded indicator of the height of the floor in decimeters. You can understand the features of such marking using the following example:
- VB-40 is a unit that is designed to equip ventilation in a building where the floor height is about 40 dm.
- VB-30 - a ventilation unit, which provides for use in a room with a floor height of not more than 30 dm.
Digital indices in the marking of various types of ventilation units are added if you need to use additional embedded elements, which are intended to create supports on the floor.
The presence of special markings on the ventilation units can inform both about the size of the products and about their narrowly targeted use. In some cases, marking is added to this, which indicates the type of concrete that was used in the production, the resistance of the manufacturing materials to natural influences and aggressive environments.
Material benefits
Regardless of the type and method of application, the ventilation unit has the following advantages:
- the ability to quickly organize natural ventilation ;
- increased level of strength and reliability of the structure;
- resistance to environmental influences and mechanical damage;
- the presence of refractory and frost-resistant qualities;
- protection from the development of processes of decay, the formation of fungi, mold.