Perhaps the construction of old buildings is the biggest problem in the urban fabric. especially in the big cities, Strengthening old buildings is very important. Old buildings can generally be divided into the following three categories
- Old iron buildings
- Old Al-Khorsaniya buildings
- The buildings of al-Hajriyya al-Qadimah
The improvement of all these old buildings is done in a special way. And we will continue to provide all of them.
How to strengthen the old building
There are different ways to strengthen old buildings. For example , If the building contains a mineral frame and it is an old steel building, Adding wind supports can be the best way to strengthen. Specific elements (horizontal and vertical envelopes): In order to strengthen Al-Khorsani’s skeleton, They use the walls of Al-Qas.
You can also use the method of increasing the thickness of the walls or adding a rear strip to the walls. It is also possible to strengthen concrete, clay and modern brick buildings using traditional buildings. But in order to strengthen the most complex structures, It must be done under the supervision of experts.
According to the condition of your building, It is possible for these experts to hire new methods, such as Al-Murrushah al-Murrusha and fixing the surface. and epoxy injection, Employing FRP fibers, and adding a steel jacket or a concrete jacket, and the use of the previous al-Shad and the subsequent or hiring strengthening balms, Suggest your structure.
Regarding the strengthening of very old buildings, If the building has no historical value, The cost of upgrading and the problems of implementing the upgrading process are very expensive and complicated so that in the end it is decided to demolish the building and rebuild it.
Reinforcement of old iron buildings
The high quality of welding and the resistance of the steel used in the construction of buildings are among the most important things that guarantee the resistance of old steel buildings. These factors also determine the level of earthquake resistance of the building. But different parts of these buildings sometimes need to be repaired and strengthened. And we are clear below.
Strengthening the Bishop of Al-Maqqaba
I have the important parts of the old steel buildings of the bishops. And it is made of iron and compressed drums. in general , Because these surfaces are not developed, It has high earthquake resistance. Also, the heavy weight causes them a lot of strength. As a result, they will suffer serious injuries over time.
Ways to strengthen the facade in steel buildings
To reinforce these categories, The method of constructing a steel and concrete mesh on the existing surface and removing the vaulted ceiling at the end is employed. for this purpose , First, remove the woodwork on the surface, then install the steel mesh on the surface. after that, Add a layer of concrete with a thickness of 5 to 10 cm and remove the logs under the ceiling. The important point is that plastic must be employed before the implementation of the reinforced steel and concrete mesh so that there is no conflict between the timber and concrete.
Reinforcement of columns of old steel buildings
Most of the columns of the old steel buildings are of the double-section type. today, The engineers realized that these columns are not earthquake resistant. Specific elements (horizontal and vertical envelopes): Due to large non-linear distortions, It causes a lot of drifts and eventually collapse of the building.
To strengthen the fixed columns, It is obligatory for one to employ side-to-side sheets instead of cutting or employing the concrete layer method and surrounding the part of the fixed beams with concrete. Yazid, this action increases the resistance to bending, shearing, and vertical bending and makes the steel construction resistant to earthquakes.
Reinforcement of al-Mabbani al-Khorsani
The most important factor that reduces the strength of old concrete buildings is the low quality of materials and the low compressive strength of concrete and the lack of implementation of regulations. For example , Not enough longitudinal reinforcements are employed or the number of cross-armors is insufficient.
In order to strengthen these buildings, The strength of compressed concrete must be determined. For example , If the concrete strength is at least 170 kg/cm2, If you have to use Alstrata Al-Khursaniye method for strengthening, And if this number is higher, The solution for strengthening is the use of steel plates and fixings with threaded fasteners.
Another method is strengthening with FRP. According to the latest trends, This method is currently employed and is very suitable for strengthening concrete structures.
To strengthen the old concrete buildings, You can also use the method of adding a wall. The wall makes the lateral loading system in the structure more solid and resistant. for this purpose , Hiring Hadade Taslih in Al-Baulaman, which leads to the creation of a perpendicular wall.
Reinforcement of stone buildings
The old buildings of Al-Hijriyya are one of those buildings that need to be updated. In these temples, Due to the employment of al-Tain and al-Labbin and al-Toob, Absence of skeletons and bones, It will be cheaper and easier to upgrade. So that my local builders can repair these buildings.
Usually, we hire low-quality materials. Walmlat al-Saeb, And the contradictions in the scheme, and the weakness of the bearing walls, Absence of vertical determination elements, and the presence of control units and non-initial honors, I am among the things that cause destruction and destruction. old buildings
One of the common causes of destruction in these buildings is the occurrence of cracks in the walls. Professional builders can simply connect two separate walls together using steel mesh or steel bars.
When strengthening the old buildings of al-Hajriyya, Special attention must be paid to several points. First , You have to pay attention to the way you choose to strengthen the building. Specific elements (horizontal and vertical envelopes): You must make the process of strengthening the structure stronger so that the building can withstand earthquakes.
On the other hand , It must be strengthened in the direction of strengthening the structure dynamically and consistently. Specific elements (horizontal and vertical envelopes): It is necessary to hire light and compatible materials so as not to add additional load to the building. Specific elements (horizontal and vertical envelopes): in the enhancement, It should be noted that the historical architecture of the building and its beauty are not lost.
Strengthening the foundations of old buildings
The foundations of ancient buildings are considered the most important parts of these buildings. To strengthen the foundations of these buildings, It uses common methods such as planting rebars or employing FRP fibers. Also, the use of metal and concrete layers is one of the common ways to strengthen the foundations of old buildings.