Investigating the use of niches
The shed is a metal frame that is built on several columns. These columns are connected to the foundation by the column plate and prevent vibration in the structure. The other part of the columns is connected to the rafter or frame with flange connections. Rafters also facilitate the installation and implementation of sloping roofs. Most sports halls, warehouses, livestock and poultry production halls, etc. are built in the form of sheds. Based on the size of the opening, height, length and tolerance of rain and snow at the construction site, sheds are designed and executed in various forms. Shed is taken from the English word industrial shed and is called a triangular structure.
Truss nest
One of the simplest and most modern sheds is the truss shed. The presence of unique parameters in its construction has made it stand out from other types of sheds. In terms of the materials used in the construction, it is similar to the sheet beam shed, but it is different in performing detailed technical calculations. The use of up-to-date engineering expertise in the construction of the truss shed has caused the use of steel parts to be at its lowest, as a result of the amount The weight of the structure is reduced and its endurance and durability are increased. Not using a lot of steel parts in the truss shed does not affect its safety and security. and this work has caused it to prevent the accumulation of weight in one point. Among the advantages of building a truss shed are low transportation costs, design of an arched or octagonal roof, ease of installation by a crane in any number, He pointed out that the final price of creation is lower, its implementation without restrictions in wide openings and without columns, no restrictions in design and the ability to open the structure easily.
UBM niches (UBM)
Formed and rolled galvanized sheets are used in the construction of this type of shed. The sheets are connected to each other by a special device called Samir. This is done to fasten the sheets together. But the thing worth considering in this part is the possibility of the sheets being separated from each other due to contraction, expansion and strong vibrations caused by the force of the wind. The most common use of this type of shed is for structures with a maximum opening of 30 meters.
The low resistance of this type of shed against air humidity, rain and snow due to the use of spray insulation method causes that in a short period of time after the components It needs to be repaired and taken care of, and this itself causes an increase in consumption costs.
The insulation used in this type of sheds is flammable and absorbs pollution. In addition, they will not have the ability to disinfect in any way, for this reason, this type of shed should not be used in hospitals, food processing, poultry or livestock industries. One of the advantages of the UBM shed is its low construction cost. It is similar to other sheds, but due to the length limit of the opening and the lack of resistance to moisture and weather changes, it is suggested to use other types of sheds.
The beam nest
The oldest and most used sheds are sheet beam sheds due to the passage of time. Of course, don't forget that in the past, due to the lack of sufficient engineering knowledge, these types of sheds were more common. Regarding the teaching of sheet beam sheds in the past, all university graduates used this method and method of construction. For this reason, the number of sheet beam sheds in the country is more than other types. The construction of this type of sheds is obsolete in European countries, but it is still used and built in Asian countries such as Iraq, Afghanistan, Iran, etc.
The construction of sheet beam sheds is done using steel parts and black sheets. The shape of the roof of this type of shed is octagonal, which is created through welding. The construction of this type of shed faces many disadvantages. For example, it is not possible to build an opening with a length of more than 45 meters. Due to the use of many parts, the weight of this shed is more than usual, and as a result, its cost is higher than other structures. According to the given explanations, people prefer to replace the sheet beam shed with another shed structure. are less for construction, use sheet beam shed for this opening size.