* DESIGN OF
THE YEAR 2020

The AirMesh Pavilion is based on the 20th century technology of space frames, which are commonly used today to support large span structures. How is it different from before?

Carlos Bañón (CB): The pavilion was created for the Gardens by the Bay’s Mid-Autumn Festival 2019. Its faceted form, which reinterprets a traditional Chinese lantern, is based on a technology we have been developing to create lightweight structures. The main difference is the use of 3D printing, which allows for more adaptable and freeform designs. Typically, a space frame is composed with standardised bars and nodes that have a limited number of angles to work with. By using 3D printing, we can design each node as a different geometry to create as complex a structure as needed.

The pavilion was designed in response to the specific site so that it “disappears” into the beautiful landscape. Three viewpoints were chosen — the Dragonfly Lake, the Future of Us Pavilion and the iconic roof of Marina Bay Sands — to generate its shape and openings. We created its stainless steel structure to be as thin and light as possible. The pavilion was then wrapped with a nylon net to create a veil that filters the view and to convey a feeling of lightness.

The AirMesh Pavilion has multiple bespoke components but could be assembled in just two days. How does its design allow for such rapid construction?

CB: Typically, one would produce drawings of a structure before sending them to a manufacturer to figure out how to construct it. To design a complex structure such as the AirMesh Pavilion and create it using standard components would have been long-drawn and challenging. Any minor deviations would have compromised the accuracy of the final structure. Our technology automates the design process. Based on the specified geometry, our parametric script calculates the angles of the bars and nodes and generates the different designs as digital files. These are then sent directly to the printer. There are no errors because you can digitally review all the documentation and the 3D model.

We also simplified the construction sequence by integrating as many components as possible into the nodes and bars. They come printed with rivet threads so connecting a node and bar is akin to assembling one big piece of IKEA furniture. The pavilion was assembled by six graduate students working in teams of three. You don’t need very skilled human resources. In a sense, we have made an ultra-high-performance structure accessible to more people.

Part of your design process involved working with architects and material scientists to create a new workflow that reduces material wastage. How does this work?

CB: Our goal was to create as light a pavilion as possible, while still maximising its performance. The new workflow removed a lot of unnecessary construction as we could control every single inch of material placed in the pavilion. As opposed to standard components that needed to be modified and adapted to fit the design, our algorithm allowed us to determine the performance required and even the detailing of the parts. The pavilion was printed in stainless steel, whose mechanical properties are as good as what is used in construction today.

There was also no material wastage during fabrication because 3D printing is an additive process. The environmental impact of manufacturing processes, such as their contribution to global warming, is also commonly underestimated in the construction sector. The use of 3D printing with data-driven digital models helps us more accurately measure and reduce material consumption, wastage, water usage and emissions.

The entire pavilion — from its design to fabrication — was done digitally. How might digital design change the role of the architect?

CB: Architecture is moving very, very quickly into digital design. Many decisions that were previously based on intuition can now be informed using algorithms. Architects need to be trained to adapt to this new way of thinking, integrating coding in the learning sequence. It is not just about how to use the tools but how to think with them. We are moving towards more data-driven designs, integrating data points from the environment, structural performance and even budget constraints. The problem with some digital strategies is that they rely solely on specific software tools to validate decisions, even though the premises might be wrong. As architects, we still need to make informed decisions based on selected layers of complexities, and to have the ability to articulate them in a relevant and meaningful way.

I’m very proud that it is not apparent to people that AirMesh Pavilion was digitally designed or even 3D printed. I wanted to create an experience and atmosphere that people would feel right in, without shouting in their face that it was digitally designed.

What possibilities does the technology behind AirMesh Pavilion hold for the future of architecture and construction?

CB: The system is scalable, and we could print larger structures like a bus stop or a canopy of a sports hub. You can design different forms based on the context instead of being constrained by standard components which give limited shapes. Everything can be more adaptive, and the door to architectural freedom is unlocked. And it is not costlier to have variations as long as the amount of material used is similar.

With 3D printing, you can also integrate the many separate building components into a single piece. A node could be hollowed for running services or electronics inside. This reduces the number of layers a building needs as well as the time needed to construct it. As the connections become seamless, it brings a radically new kind of aesthetic to architecture.

The next step for us is to use the system to make a permanent structure. This small pavilion has already gotten the world’s attention. It would be great to see Singapore print something of a larger scale, perhaps bridges, long-span shelters, or multi-storey spaces to demonstrate our confidence in this technology and blaze a path for the future.