Currently, most residential constructions use the traditional system of reinforced concrete columns and beams, while masonry acts only as a partition. However, the Brazilian market is increasingly adopting structural masonry, a system in which the walls fully assume the structural function of the building.<\/p>\n\n\n\n
Therefore, when planning to build or renovate, understanding this difference becomes essential. After all, the choice between structural masonry and conventional construction directly impacts the cost of the project, the execution time, the durability of the building, and, in addition, the flexibility for future renovations.<\/p>\n\n\n\n
In this article, you will understand what structural masonry is, how it works in practice, its advantages and disadvantages, when it is worthwhile to use it, and real-world examples of its application in Santa Catarina.<\/p>\n\n\n\n
Structural masonry is a construction system in which the walls, built with structural blocks, function as load-bearing elements. Thus, they support all the loads of the building, such as its own weight, furniture, people, and live loads, transmitting these forces directly to the foundations.<\/p>\n\n\n\n
Unlike conventional construction, where pillars and beams concentrate structural forces, in structural masonry the walls themselves perform this function. The blocks are laid with specific mortar and, subsequently, grout and reinforcement are added, forming a monolithic, resistant, and stable structure.<\/p>\n\n\n\n
Structural masonry has well-defined technical characteristics. Firstly, it uses structural concrete blocks, never common bricks. Furthermore, the walls follow standardized thicknesses, generally 14 cm or 19 cm. The mortar has a controlled mix, which guarantees adequate strength and adhesion.<\/p>\n\n\n\n
Another important point is the absence of conventional columns and beams. As a result, the concrete slabs rest directly on the structural walls, which simplifies the system and reduces construction steps.<\/p>\n\n\n\n
To illustrate, imagine a building with 10 floors. In a conventional system, a few columns concentrate practically all the weight of the building. In contrast, in structural masonry, all the walls of the floors work together, distributing the loads uniformly.<\/p>\n\n\n\n
As a result, this distribution reduces stress concentrations, improves overall stability, and enhances structural performance.<\/p>\n\n\n\n
For a correct technical decision, a direct comparison between the two systems becomes indispensable.<\/p>\n\n\n\n
In structural masonry, the construction does not require complex slab shoring. Furthermore, workers lay the blocks quickly and use less heavy equipment. Therefore, the construction of a floor typically takes 2 to 3 weeks.<\/p>\n\n\n\n
On the other hand, in conventional construction, the execution of columns, beams, and slabs requires greater precision, prolonged reshoring, and more robust equipment. Thus, each floor typically takes 4 to 6 weeks.<\/p>\n\n\n\n
Conclusion: Structural masonry speeds up construction by approximately 30 to 40 percent.<\/p>\n\n\n\n
In structural masonry, despite the need for skilled labor, the construction process simplifies steps, reduces waste, and decreases the use of equipment. Therefore, the cost per square meter generally varies between R$ 1,200 and R$ 1,500.<\/p>\n\n\n\n
In contrast, conventional construction involves more complex engineering, higher material consumption, and a greater volume of waste. Thus, the cost per square meter typically ranges between R$ 1,400 and R$ 1,800.<\/p>\n\n\n\n
Conclusion: Structural masonry reduces the total cost by between 10 and 20 percent.<\/p>\n\n\n\n
In structural masonry, the walls serve a structural function and therefore cannot be removed. As a result, layouts become more rigid and future renovations require greater technical caution.<\/p>\n\n\n\n
In conventional construction, the interior walls function only as enclosures. This allows users to more easily alter layouts throughout the building's lifespan.<\/p>\n\n\n\n
Conclusion: conventional construction offers greater flexibility.<\/p>\n\n\n\n
Due to the high thermal mass of concrete blocks, structural masonry reduces internal temperature variation and improves sound insulation. As a result, users observe a reduction in air conditioning consumption, often between 15 and 20 percent.<\/p>\n\n\n\n
In turn, conventional construction, with lighter sealing blocks, offers inferior thermal and acoustic performance.<\/p>\n\n\n\n
Conclusion: structural masonry offers greater energy efficiency.<\/p>\n\n\n\n
In structural masonry, reducing the use of steel decreases the risk of corrosion. Furthermore, concrete blocks offer high durability, often exceeding 50 years, with low maintenance requirements.<\/p>\n\n\n\n
In conventional construction, columns and beams are more susceptible to corrosion of the reinforcement and deformation over time, which increases the demand for maintenance.<\/p>\n\n\n\n
In conclusion, structural masonry offers greater durability.<\/p>\n\n\n\n
Beyond direct comparisons, the system presents specific and relevant advantages.<\/p>\n\n\n\n
The construction process follows a direct and repetitive logic, which reduces errors and speeds up execution. As a result, costs for skilled labor can fall by between 25 and 30 percent.<\/p>\n\n\n\n
Since the walls take on a structural function, the design eliminates internal pillars. In this way, each unit gains between 3 and 5 percent of usable area.<\/p>\n\n\n\n
Structural blocks offer superior sound insulation, often between 50 and 60 dB. This makes the spaces quieter and more comfortable.<\/p>\n\n\n\n
Standardizing the system reduces construction variations. Consequently, the project involves less rework and lower costs for corrections.<\/p>\n\n\n\n
Distributing the loads across multiple walls increases the overall stability of the building, including against strong winds and horizontal forces.<\/p>\n\n\n\n
Despite its benefits, the system has significant technical limitations.<\/p>\n\n\n\n
Structural masonry limits the height of buildings, typically between 8 and 12 stories, as the loads on the lower walls increase significantly. Furthermore, the inability to remove walls reduces flexibility for renovations.<\/p>\n\n\n\n
Another critical point involves the need for extremely precise design from the outset. Any subsequent alteration directly impacts cost and safety. Finally, execution requires experienced labor, and any structural deformations appear slowly.<\/p>\n\n\n\n
The construction process follows well-defined steps.<\/p>\n\n\n\n
Initially, the team constructs the foundations, specifically designed to support the loads of the walls. Then, the workers erect the walls with meticulous control of plumb, level, and alignment, inserting horizontal reinforcement periodically.<\/p>\n\n\n\n
After this stage, the structure undergoes grouting, which fills the voids in the blocks with fluid concrete and ensures the monolithic behavior of the structure. Subsequently, the team constructs the slabs and repeats the process on the upper floors.<\/p>\n\n\n\n
In 10-story buildings, the total timeframe typically ranges between 3 and 4 months, while in the conventional system this timeframe usually exceeds 4 or 5 months.<\/p>\n\n\n\n
Structural masonry follows strict technical standards. NBR 10837 defines the structural calculation criteria. NBR 6136 establishes the requirements for structural blocks. NBR 8798 regulates the execution and quality control criteria.<\/p>\n\n\n\n
These standards ensure the system's safety, performance, and durability.<\/p>\n\n\n\n
Several projects in Santa Catarina demonstrate the system's efficiency, including residential buildings in Blumenau, commercial developments in Joinville, and residential condominiums in Navegantes. In all cases, the projects showed reduced timelines, cost savings, and excellent structural and acoustic performance.<\/p>\n\n\n\n
Structural masonry is perfectly suited for residential buildings with 4 to 10 floors, medium-sized commercial developments, condominiums with duplicate units, and constructions focused on sustainability.<\/p>\n\n\n\n
On the other hand, the system is not suitable for very tall buildings, projects with large spans, or situations that require high layout flexibility.<\/p>\n\n\n\n
| Item<\/th> | Structural Masonry<\/th> | Conventional<\/th> | Difference<\/th><\/tr><\/thead> |
|---|---|---|---|
| Foundation<\/td> | R$ 180.000<\/td> | R$ 200,000<\/td> | R$ 20.000<\/td><\/tr> |
| Structure<\/td> | R$ 450,000<\/td> | R$ 620.000<\/td> | R$ 170.000<\/td><\/tr> |
| Masonry<\/td> | R$ 300,000<\/td> | R$ 280.000<\/td> | Increase of R$ 20,000<\/td><\/tr> |
| Slabs<\/td> | R$ 320.000<\/td> | R$ 350,000<\/td> | R$ 30.000<\/td><\/tr> |
| Finish<\/td> | R$ 800.000<\/td> | R$ 800.000<\/td> | Equal<\/td><\/tr> |
| Total<\/td> | R$ 2,050,000<\/td> | R$ 2,250,000<\/td> | Economy of R$ 200,000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \n\n\n\n Conclusion<\/h2>\n\n\n\nStructural masonry represents a consolidated, safe, and efficient construction system for medium-sized buildings. It delivers significant gains in terms of time, cost, thermal and acoustic performance, and durability. Although it requires precise design and offers less flexibility, its advantages far outweigh its limitations in most projects in Santa Catarina.<\/p>\n\n\n\n For those seeking technical and economic efficiency, structural masonry should always be considered in the analysis from the project's conception stage.<\/p>","protected":false},"excerpt":{"rendered":" Atualmente, a maioria das constru\u00e7\u00f5es residenciais utiliza o sistema tradicional de pilares e vigas de concreto armado, enquanto a alvenaria atua apenas como veda\u00e7\u00e3o. Entretanto, o mercado brasileiro vem adotando cada vez mais a alvenaria estrutural, um sistema no qual as paredes assumem integralmente a fun\u00e7\u00e3o estrutural do edif\u00edcio. Portanto, ao planejar construir ou reformar, entender essa diferen\u00e7a torna-se essencial. Afinal, a escolha entre alvenaria estrutural e constru\u00e7\u00e3o convencional impacta diretamente o custo da obra, o prazo de execu\u00e7\u00e3o, a durabilidade da edifica\u00e7\u00e3o e, al\u00e9m disso, a flexibilidade para futuras reformas. Neste artigo, voc\u00ea entende o que \u00e9 a alvenaria estrutural, como ela funciona na pr\u00e1tica, quais s\u00e3o suas vantagens e desvantagens, quando vale a pena utiliz\u00e1-la e exemplos reais de aplica\u00e7\u00e3o em Santa Catarina. O que \u00e9 Alvenaria Estrutural A alvenaria estrutural \u00e9 um sistema construtivo no qual as paredes, executadas com blocos estruturais, funcionam como elementos portantes. Assim, elas suportam todas as cargas da edifica\u00e7\u00e3o, como peso pr\u00f3prio, mobili\u00e1rio, pessoas e sobrecargas, transmitindo essas a\u00e7\u00f5es diretamente para as funda\u00e7\u00f5es. Diferentemente da constru\u00e7\u00e3o convencional, em que pilares e vigas concentram os esfor\u00e7os estruturais, na alvenaria estrutural as pr\u00f3prias paredes exercem essa fun\u00e7\u00e3o. Os blocos recebem assentamento com argamassa espec\u00edfica e, posteriormente, graute e armaduras, formando um conjunto monol\u00edtico, resistente e est\u00e1vel. Caracter\u00edsticas Principais A alvenaria estrutural apresenta caracter\u00edsticas t\u00e9cnicas bem definidas. Primeiramente, utiliza blocos estruturais de concreto, nunca tijolos comuns. Al\u00e9m disso, as paredes seguem espessuras padronizadas, geralmente de 14 cm ou 19 cm. A argamassa possui tra\u00e7o controlado, o que garante resist\u00eancia e ader\u00eancia adequadas. Outro ponto relevante \u00e9 a aus\u00eancia de pilares e vigas convencionais. Como consequ\u00eancia, as lajes de concreto apoiam-se diretamente sobre as paredes estruturais, o que simplifica o sistema e reduz etapas construtivas. Como Funciona na Pr\u00e1tica Para ilustrar, imagine um edif\u00edcio com 10 pavimentos. No sistema convencional, poucos pilares concentram praticamente todo o peso da edifica\u00e7\u00e3o. Em contrapartida, na alvenaria estrutural, todas as paredes dos pavimentos trabalham em conjunto, distribuindo as cargas de maneira uniforme. Como resultado, essa distribui\u00e7\u00e3o reduz concentra\u00e7\u00f5es de esfor\u00e7os, melhora a estabilidade global e eleva o desempenho estrutural. Alvenaria Estrutural vs Constru\u00e7\u00e3o Convencional Para uma decis\u00e3o t\u00e9cnica correta, a compara\u00e7\u00e3o direta entre os dois sistemas torna-se indispens\u00e1vel. Velocidade de Constru\u00e7\u00e3o Na alvenaria estrutural, a obra n\u00e3o exige escoramentos complexos de lajes. Al\u00e9m disso, os oper\u00e1rios assentam os blocos rapidamente e utilizam menos equipamentos pesados. Dessa forma, a execu\u00e7\u00e3o de um pavimento costuma levar de 2 a 3 semanas. Por outro lado, na constru\u00e7\u00e3o convencional, a execu\u00e7\u00e3o de pilares, vigas e lajes exige maior precis\u00e3o, reescoramento prolongado e equipamentos mais robustos. Assim, cada pavimento normalmente demanda de 4 a 6 semanas. Conclus\u00e3o: a alvenaria estrutural acelera a obra em aproximadamente 30 a 40 por cento. Custo Total Na alvenaria estrutural, apesar da necessidade de m\u00e3o de obra qualificada, o processo construtivo simplifica etapas, reduz desperd\u00edcios e diminui o uso de equipamentos. Por isso, o custo por metro quadrado geralmente varia entre R$ 1.200 e R$ 1.500. Em contraste, a constru\u00e7\u00e3o convencional envolve engenharia mais complexa, maior consumo de materiais e maior volume de res\u00edduos. Assim, o custo por metro quadrado normalmente fica entre R$ 1.400 e R$ 1.800. Conclus\u00e3o: a alvenaria estrutural reduz o custo total entre 10 e 20 por cento. Flexibilidade de Projetos Na alvenaria estrutural, as paredes exercem fun\u00e7\u00e3o estrutural e, portanto, n\u00e3o admitem remo\u00e7\u00e3o. Como consequ\u00eancia, os layouts tornam-se mais r\u00edgidos e as reformas futuras exigem maior cautela t\u00e9cnica. J\u00e1 na constru\u00e7\u00e3o convencional, as paredes internas funcionam apenas como veda\u00e7\u00e3o. Dessa forma, os usu\u00e1rios conseguem alterar layouts com maior facilidade ao longo da vida \u00fatil do edif\u00edcio. Conclus\u00e3o: a constru\u00e7\u00e3o convencional oferece maior flexibilidade. Efici\u00eancia Energ\u00e9tica Devido \u00e0 elevada massa t\u00e9rmica dos blocos de concreto, a alvenaria estrutural reduz a varia\u00e7\u00e3o de temperatura interna e melhora o isolamento ac\u00fastico. Assim, os usu\u00e1rios observam redu\u00e7\u00e3o no consumo de ar condicionado, frequentemente entre 15 e 20 por cento. Por sua vez, a constru\u00e7\u00e3o convencional, com blocos de veda\u00e7\u00e3o mais leves, apresenta desempenho t\u00e9rmico e ac\u00fastico inferior. Conclus\u00e3o: a alvenaria estrutural apresenta maior efici\u00eancia energ\u00e9tica. Durabilidade Na alvenaria estrutural, a redu\u00e7\u00e3o do uso de a\u00e7o diminui os riscos de corros\u00e3o. Al\u00e9m disso, os blocos de concreto apresentam elevada durabilidade, frequentemente superior a 50 anos, com baixa necessidade de manuten\u00e7\u00e3o. Na constru\u00e7\u00e3o convencional, pilares e vigas ficam mais suscet\u00edveis \u00e0 corros\u00e3o das armaduras e a deforma\u00e7\u00f5es ao longo do tempo, o que aumenta a demanda por manuten\u00e7\u00e3o. Conclus\u00e3o: a alvenaria estrutural oferece maior durabilidade. Vantagens da Alvenaria Estrutural Al\u00e9m das compara\u00e7\u00f5es diretas, o sistema apresenta vantagens espec\u00edficas relevantes. Simplicidade Construtiva O processo construtivo segue l\u00f3gica direta e repetitiva, o que reduz erros e acelera a execu\u00e7\u00e3o. Como consequ\u00eancia, os custos com m\u00e3o de obra especializada podem cair entre 25 e 30 por cento. Aus\u00eancia de Pilares Internos Como as paredes assumem a fun\u00e7\u00e3o estrutural, o projeto elimina pilares internos. Dessa forma, cada unidade ganha entre 3 e 5 por cento de \u00e1rea \u00fatil. Melhor Desempenho Ac\u00fastico Os blocos estruturais oferecem isolamento ac\u00fastico superior, frequentemente entre 50 e 60 dB. Assim, os ambientes tornam-se mais silenciosos e confort\u00e1veis. Controle de Qualidade A padroniza\u00e7\u00e3o do sistema reduz varia\u00e7\u00f5es construtivas. Consequentemente, a obra apresenta menos retrabalho e menor custo com corre\u00e7\u00f5es. Estabilidade Estrutural A distribui\u00e7\u00e3o das cargas por diversas paredes aumenta a estabilidade global da edifica\u00e7\u00e3o, inclusive frente a ventos fortes e a\u00e7\u00f5es horizontais. Desvantagens da Alvenaria Estrutural Apesar dos benef\u00edcios, o sistema apresenta limita\u00e7\u00f5es t\u00e9cnicas relevantes. A alvenaria estrutural limita a altura dos edif\u00edcios, normalmente entre 8 e 12 pavimentos, pois as cargas nas paredes inferiores aumentam significativamente. Al\u00e9m disso, a impossibilidade de remover paredes reduz a flexibilidade para reformas. Outro ponto cr\u00edtico envolve a necessidade de projeto extremamente preciso desde o in\u00edcio. Qualquer altera\u00e7\u00e3o posterior impacta diretamente o custo e a seguran\u00e7a. Por fim, a execu\u00e7\u00e3o exige m\u00e3o de obra experiente, e eventuais deforma\u00e7\u00f5es estruturais surgem de forma lenta. Como \u00e9 Feita a Alvenaria Estrutural O processo construtivo segue etapas bem definidas. Inicialmente, a equipe executa as funda\u00e7\u00f5es, dimensionadas especificamente<\/p>","protected":false},"author":2,"featured_media":7284,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_wgb_auto_generated":"","_wgb_pair_post_id":0,"footnotes":""},"categories":[244],"tags":[284],"class_list":["post-7283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engenharia","tag-fundacoes-e-estruturas"],"acf":[],"yoast_head":"\n |