[Many thanks to Peter Jordens for bringing this item to our attention.] M. Wesam Al Asali on Cuban architecture, for The Conversation.
Construction and buildings account for more than one-quarter of global greenhouse gas emissions. Meanwhile, according to a September report by Realtor.com, the U.S. alone is short 5.24 million homes.
But this isn’t the first time architects and governments have had to deal with dwindling resources and the task of housing large numbers of people. In 1959, an armed revolt led by Fidel Castro ousted Cuba’s military dictatorship of Fulgencio Batista. As part of a broader plan to improve the quality of life for millions of Cubans, Castro’s new government sought to develop a program to mass-produce new housing, schools and factories. In the years that followed, however, this dream clashed with difficult realities. Sanctions and supply chain disruptions had created a shortage of conventional building materials. Architects realized they needed to do more with less and invent new construction methods using local materials.
A thousand-year-old technique
In an article that I co-authored with architect and engineer Michael Ramage and architect Dania González Couret, we explored the creative challenges of this period by focusing on a specific structural element that these Cuban architects soon seized upon: the tile vault.
It involves constructing arched ceilings made of multiple layers of lightweight terra cotta tiles. To build the first layer, the builders use fast-setting mortar to glue the tiles together with barely any temporary support. Afterward, the builder adds more layers with normal cement or lime mortar. This technique doesn’t require expensive machinery or use of a lot of timber for formwork. But speed and craftsmanship are paramount.
Because of its affordability and durability, tile vaulting spread to different parts of Europe and the Americas. It became known as Guastavino tiling in the U.S – a nod to Spanish architect Rafael Guastavino, who used the technique in over 1,000 projects in the U.S., including the Boston Public Library and New York’s Grand Central Station.
Vaults in vogue
In Cuba, tile vaults were famously used to build the National Art Schools, or Escuelas Nacionales de Arte.
Fidel Castro advocated for the construction of the five schools on what, before the revolution, had been a golf course in Cubanacán, a town west of Havana.
Designed by Ricardo Porro, Vittorio Garatti and Roberto Gottardi, the schools integrate terra cotta shells and arches with the site’s green landscape. They were long thought to be the only tile vault buildings in post-revolution Cuba.
However, we discovered that the National Art Schools are only the tip of the iceberg. From 1960 to 1965, a range of vault experiments and projects took place across the country.
Shortly after the revolution, architects and engineers at the Ministry of Construction – known as MICONS – went to Camagüey, a province known for its terra cotta brick-making, to learn more about the craft. One of these architects, Juan Campos Almanza, then a recent graduate of the University of Havana, led the research team. As an experiment, he built a load-bearing vault on the grounds of the Azorin brick factory.
It was a success. He went on to use the design to construct affordable and elegant beachfront homes in Santa Lucía, north of Camagüey, using the same vault design.
The best of both worlds
Brick-and-tile vault construction appeared to be a promising solution to build replicable and cost-effective ceilings.
The Center of Technical Investigations, an agency tasked with developing housing, schools and factories, used Almanza’s research to construct its own vaulted offices. An outdoor space nearby – famously called “El Patio del MICONS” – became a staging ground for more structural experiments.
In El Patio, craftspeople, engineers and architects worked together to develop affordable vaulted buildings, while teachers at El Patio’s tile masons’ school taught building techniques to cohorts of apprentices. [. . .]
Today, a handful of promising initiatives show how the craft of tile vaulting can serve for the low-carbon construction of buildings or engineered ceiling systems. Back in Cuba, tile vaulting is now being taught in the Escuela Taller Gaspar Melchor, a training center in Havana’s historical center.
Cuba’s vaulted architecture reflects the relationship between necessity and invention, a process that many people mistakenly think of as automatic. It isn’t. It is a relationship based on perseverance, trial and error and, above all, passion.
Look no further than what Juan Campos Almanza and his peers left behind on the island: beautiful, replicable buildings, many of which are still standing today.
For full article and illustrations, see https://theconversation.com/cubas-post-revolution-architecture-offers-a-blueprint-for-how-to-build-more-with-less-170611
[Above: The School of Ballet by Vittorio Gratti, one of the five vaulted National Art Schools in Havana. M. Wesam Al Asali, CC BY-SA.]