Structural masonry is widely used in architecture and civil engineering for its efficiency, speed in execution, and resource optimization. Unlike conventional masonry, where blocks or bricks are used only to seal the projects and structures are composed of reinforced concrete pillars and beams, in structural masonry, the blocks also assume structural function by supporting the loads of the building. This approach provides a rationalization of the construction process and, when well planned, results in more economical, sustainable, and efficient works.
What is structural masonry?
Structural masonry is a construction system where the walls have a dual function: they are both sealing elements and structure. This means that they support not only their own weight but also the loads from floors, roofs, and even other floors. For this reason, this type of masonry requires a specific project with detailed structural calculations, ensuring that the blocks used are sized and positioned to guarantee stability and safety. There are two main types of structural masonry: reinforced structural masonry and unreinforced structural masonry. In the first, steel reinforcements are inserted inside the blocks, providing greater resistance to horizontal forces, such as wind or seismic movements. In the second, the resistance is provided only by the blocks and the mortar used, being indicated for smaller constructions. This technique proves particularly advantageous in large-scale works, such as housing complexes, residential buildings up to four floors, and enterprises that seek to reduce costs and execution time without compromising structural quality.
What are the most common types of bricks?
In structural masonry, the blocks used are specific and cannot be replaced by common sealing bricks. They must meet technical requirements that ensure mechanical resistance, dimensional uniformity, and compatibility with other structural elements. The main types of blocks are:
- Structural concrete blocks: widely used, they have high compressive strength and allow for rapid execution. They can have internal cavities that facilitate the passage of installations and the insertion of grout (high fluidity concrete) and reinforcements.
- Ceramic structural blocks: made from burnt clay, they have good thermal performance and are lighter than concrete blocks. However, they require more care in handling and masonry due to their fragility.
- Soil-cement blocks: a more sustainable option, made with earth, cement, and water. Although less common, they have gained traction in projects prioritizing eco-friendly materials.
The choice of block type depends on the structural project, the region where the work will be carried out, the desired performance (acoustic, thermal, structural), and the availability of materials.
Can structural masonry be used in any type of construction?
Despite its versatility, structural masonry is not suitable for any type of construction. It is more appropriate for buildings with up to five floors, where it is possible to distribute loads evenly. In taller constructions or those with large free spans (without walls or with very open spaces), it may be necessary to resort to other structural systems, such as reinforced concrete with pillars and beams. Another factor to consider is that, since the walls are structural elements, it is not possible to remove or alter their position after the work is finished, which limits future renovations. Therefore, this system is more advantageous when there is a well-defined project from the start, with standardized plans, as in residential buildings, schools, hospitals, and prisons. However, with advancements in techniques and materials, some architecture firms have explored creative solutions to integrate structural masonry into more complex projects, combining it with other techniques and creating versatile projects.
Necessary precautions
The execution of structural masonry requires a high degree of precision. Therefore, it is essential that the project be developed by specialized professionals, with technical knowledge in structures and materials. Some good practices include:
- Carrying out a detailed structural project;
- Using certified and reputable materials;
- Execution by trained labor;
- Strict control of plumb, alignment, and leveling;
- Verification of block resistance before use;
- Proper curing of mortar and grout.
Moreover, during construction, it is important to respect the execution timeline and keep the site organized. Small deviations can compromise the performance of the structure, making constant technical monitoring essential.
Advantages and disadvantages
Structural masonry presents several advantages that justify its increasingly frequent use in small to medium-sized works. Among the main benefits are:
- Cost reduction: eliminates the need for molds, shoring, and large amounts of concrete and steel;
- Speed in construction: allows for greater productivity and cleaner execution;
- Sustainability: generates less waste and excess;
- Better space utilization: eliminates pillars that occupy useful areas;
- Thermal and acoustic performance: especially with ceramic blocks.
However, there are also limitations:
- Little flexibility for renovations;
- Need for a specific project;
- Dependence on specialized labor;
- Limitation of spans and heights.
The knowledge of these advantages and disadvantages is essential for architects or engineers to evaluate the feasibility of the technique in each project.
This text was written by Chrys Hadrian with the assistance of CASACOR Publisher, an exclusive content creator agent developed by the CASACOR Technology team based on the knowledge base of casacor.com.br. This text was edited by Yeska Coelho. 
