Transcript
Luuk de Haas
(0:00) Ladies and gentlemen, welcome to our podcast. (0:02) Today we're going to talk about the next generation of stadiums.
(0:10) Our stacks and engineers are designing stadiums that are not only larger and more impressive, but also smarter and more sustainable.
(0:18) These new mega-structures combine bold designs with advanced technology and environmental solutions, changing the way stadiums function within cities.
(0:27) To explore this topic, we're joined by two specialists.(0:30) One will focus on the mega-design of modern stadiums, and the other will look at sustainability features such as energy, efficiency, renewable materials, and how stadiums are being designed to reduce their environmental impact.
(0:53) Together we'll discuss how these cutting-edge stadiums are redefining sports venues and what they might mean for the future of architecture and urban development. (1:06) On the right side, I got Niels, specialist in sustainability.
Niels de Rooij
(1:10) Thank you, my name is Niels, and today I'm going to talk about sustainability in large stadiums. (1:16) I will explain how stadiums can reduce their environmental impact by using things like renewable energy, efficient energy systems, and more sustainable materials. (1:25) Our goal is to make stadiums not only a great place for fans, but also better for the environment.
Luuk de Haas
(1:31) On the left side, I got Reinout, specialist in mega-design.
Reinout Barnhoorn
(1:34) Hi, I'm Reinout. (1:36) I'm the mega-design specialist in today's podcast. (1:38) My focus is on the architecture and the engineering behind the modern stadiums. (1:44)
Today's stadiums are becoming larger, more complex, and more visually iconic, which creates new challenges for architects and engineers. (1:52) I'm interested in how designers create structures on such a massive scale, while keeping them functional, safe, and visually impressive. (2:00) In this podcast, I will explain how architectures and engineering come together to create stadiums that can host tens of tens, thousands of fans and become landmarks of the cities.
Luuk de Haas
(2:12) Let's start with our first stadium, the future stadium of Jacksonville, Jaguars, Florida. (2:17) This project is a major renovation that aims to turn the current stadium into a modern stadium of the future.
(2:24) The design includes a large canopy roof that shades the stadium and helps reduce the heat inside, while also using natural ventilation and energy-efficient materials. (2:36) It's a good example of modern stadiums' projects combined mega-design with sustainability features.
(2:44) I got a question for Reinout. (2:46) The new Jacksonville Jagerwachte stadium includes a large canopy structure covering the stadium. (2:52) From a design perspective, what makes structures on this scale challenging for architects and engineers?
Reinout Barnhoorn
(2:59) So, first of all, designing a canopy on this scale is a huge engineering challenge. (3:03) You're basically trying to create a roof that stretches across the sides of several football fields, while still keeping it light-weighted and safe. (3:11) Engineers have to carefully distribute the weight using large steel stresses or cable systems, so the structure stays stable. (3:21) On top of that, the roof has to deal with strong winds, heavy rain and extreme heat, especially in a place like Florida. (3:29) So, the real challenge is creating something that looks light and elegant but is actually incredibly strong.
(3:35) According to the HOK architects, the canopy is one of the key elements of the Jacksonville stadium of the future design.
Luuk de Haas
(3:44) Thanks, Reinout. (3:45) I've got another question. (3:47) Many stadiums, modern stadiums, are becoming more officially iconic. (3:51) How important is architectural identity when designing large stadiums' products like this?
Reinout Barnhoorn
(3:57) Additionally, architectural identity has become really important for modern stadiums. (4:03) Cities don't just want to play those games anymore. (4:06) They want a landmark that people instantly recognize. (4:10) A stadium can become a symbol of the city and even a tourist attraction. (4:16) So, architects often focus on creating a unique shape of a catered sound that stands out. (4:23) At the same time, it still needs to work perfectly for the fans inside. (4:26) So, it's always a balance between creating something visually impressive and making sure the building functions well.
Luuk de Haas
(4:35) Thanks, Reinout. (4:36) Now, Niels, I've also got some questions for you. (4:39) The stadium design focuses on shading and natural ventilation to reduce heat. (4:44) How effective are these kinds of passive sustainability strategies in large buildings like stadiums?
Niels de Rooij
(4:50) Yeah, that's a great point, Luuk. (4:52) Passive sustainability is actually the most honest way to build because you're working with nature instead of against it. (4:58) In a place like Florida, the heat is your biggest enemy. (5:01) By using the massive canopy for shading, you stop the greenhouse effect before it even starts. (5:05) When you combine that with natural ventilation, basically designing stadiums to act like a giant chimney, that pulls hot air up and out, it reduces the need for massive energy-hungry AC systems. (5:17) As a result, for a structure this size, those passive moves aren't just extra features. (5:22) They are the foundation of making a megaproject like this viable environment cloud. (5:27) According to the design information published by HOK Architects, the canopy and ventilation strategies are key elements of the Jacksonville Stadium of the future.
Luuk de Haas
(5:37) Okay, Niels, this explains my question very well. (5:40) I've got another question. (5:41) Large stadiums normally consume a lot of energy. (5:44) What kinds of sustainable technologies or materials can help reduce their environmental impact?
Niels de Rooij
(5:51) In addition, beyond just the shape of the building, we look at the metabolism of the stadium. (5:56) We're talking about high-performance, low-emittance, and materials that reflect solar radiation. (6:02) Moreover, modern stadiums are becoming local power plants. (6:05) Think about the Unity Stadium in Italy. (6:07) They have integrated solar panels directly on the roof. (6:10) For example, Reuters reported that the Unity Stadium project includes solar panels on the roof to regenerate energy for the venue. (6:19) Projection fuel using recycled steel or low-carbon concrete is key. (6:23) In addition, watermanagement is also important. (6:26) Next-gen stadiums harvest rainwater from those massive roofs to irrigate a pitch and cross toilets.
(6:33) As a result, it's about creating a closed-loop system where the building gives back as much as it takes.
Luuk de Haas
(6:41) Okay, now we go to our next stadium. (6:45) I will introduce the stadium. (6:46)
Our next stadium is the Eco Park Stadium in the United Kingdom. (6:52) This stadium is planned to be one of the most sustainable football stadiums in the world.
(6:56) The design focuses on environmental responsibility, with the stadium being built mainly from roots and surrounded by a large Eco park. (7:05) The project shows how modern stadiums can combine innovative design with strong sustainability goals.
(7:14) I've got another question for you, Reinout. (7:17) The Eco Park Stadium is planned to build almost entirely from roots, from a design and construction perspective. (7:25) What challenges come with building a large stadium using this material?
Reinout Barnhoorn
(7:30) Another challenge is that building a stadium mostly from roots is actually quite unusual, especially at this scale. (7:36) Wood behaves very differently from materials like steel or concrete. (7:40) It can expand or contract depending on temperature and humidity. (7:45)
So engineers have to carefully calculate how the structure will react over time. (7:51) Fire safety and durability are also important factors. (7:55) But thanks to the modern engineered timber-like glulam, it's now possible to build very strong and stable structures with wood. (8:03) So the challenge is really about using the material in a smart and safe way on such large projects.
Luuk de Haas
(8:11) It is possible we built it with wood. (8:13) The stadium is a part of larger Eco park development. (8:16) How does designing a stadium within a bigger landscape project influence the architectural design?
Reinout Barnhoorn
(8:23) When a stadium is part of a larger park or landscape project, it really changes the design approach. (8:29) Instead of designing a building that stands alone, architects try to integrate it with the environment around it. (8:40) That means thinking about walking paths, green spaces and how visitors move through the arena of the area before and after events. (8:49) The building often becomes more open and connected to the nature. (8:54) In a project like Eco park, the idea is that the stadium feels like part of the landscape rather than something that dominates it.
(9:04) This approach is also described in the Eco park stadium project by Zaha Hadid Architects.
Luuk de Haas
(9:10) Okay, thank you Reinout for your opinion about these questions. (9:14) I got some questions for you news. (9:17) The Eco park stadium is often described as one of the most sustainable stadiums ever planned. (9:22) What specific sustainability futures make this project stand out?
Niels de Rooij
(9:28) Yeah, great question Luuk. (9:29) Another interesting example is the Eco park stadium. (9:32) Eco park is a total game changer because it challenges the concrete and still status quo.
(9:37) What makes it stand out isn't just one gadget, it's the holistic approach. (9:41) It's designed to be carbon neutral or even carbon negative from day one. (9:46) Furthermore, it's part of an massive biodiversity project in Eco park that actually improves the local ecosystem rather than destroying it. (9:54) It's not just a place for football, it's a landmark for environmental activism in the world of sports architecture. (10:01) According to Zadid Architects, the Eco park stadium is designed as a part of a large ecological development focused on sustainability and biodiversity.
Luuk de Haas
(10:10) Thank you for explaining to us why these projects stand out. (10:15) Another question, using wood as the main construction material is unusual for stadiums. (10:21) How does this choice help reduce the environmental impact of the building?
Niels de Rooij
(10:25) When we use wood, specifically, a laminated timber or glulam is a genius move for sustainability. (10:31) Here's why. (10:32) Concrete and steel are responsible for a huge chunk of global CO2 emissions. (10:37) Wood, on the other hand, actually stores carbon.
(10:39) Every beam in that stadium has isolated carbon from the atmosphere where the tree was broken. (10:45) As a result, instead of being a source of pollution, the stadium becomes a carbon fold. (10:51) Moreover, wood is much lighter than steel, which means you need less heavy machinery and lighter foundations, further reducing the embodied energy of the entire build. (11:00) This approach is also highlighted in the project description probably as Zadid Architects.
Luuk de Haas
(11:06) Ok, so by the use of wood, the environmental impact of the building is much less than if you use steel with the building. (11:13) Our final topic is the Hangzhou International Sports Centre in China. (11:19) This large stadium complex is designed as a futuristic sports centre and entertainment hub. (11:26) The project stands out because of its massive scale and its distinctive architectural design, inspired by organic shapes and modern engineering.
(11:37) The stadium combines advanced technology with large-scale design, showing how modern sports venues are becoming iconic landmarks within rapidly growing cities.
(11:48) I've got a question for you Reinout about this stadium. (11:52) The Hangzhou International Sports Centre has a very complex and futuristic structure. (11:57) What kind of engineering challenges can come with designing stadiums with these large and organic shapes?
Reinout Barnhoorn
(12:05) That's a great question. (12:06) An important point is that organic shapes might look smooth and natural, but they can be very complex to design and build. (12:13) Traditionally, stadiums use simple geometry and repeated elements, which makes construction easier. (12:20) But with these kinds of futuristic designs, almost every structural element can be slightly different. (12:27) That means architects and engineers rarely heavily on digital modelling and advanced software to design and test the structure. (12:35) It also makes the construction process more complicated, because many components have to be custom-made.
(12:43) According to Zaha Hadid Architects, digital designing tools played a key role in developing the complex structure of the Hangzhou International Sports Centre.
Luuk de Haas
(12:53) So this building is not like all the other stadiums?
Reinout Barnhoorn
(12:57) No, it isn't.
Luuk de Haas
(12:59) Products like this are built on a massive scale. (13:01) How do architects manage the balance between aesthetic, functionality and crowd capacity in large stadiums?
Reinout Barnhoorn
(13:08) Now, when designing a stadium this large, architects have to think about much more than just the apparent. (13:15) They also need to consider how tens of thousands of people will move through the building safely in conflict. (13:22) That includes things like sidelines to the fields, entrances and exits, circulation areas and emergency routes. (13:32) In many ways, designing a stadium is like designing a small city. (13:36) The challenge is combining all of that functionally with a strong visual design that makes the stadium memorable.
(13:46) Research on the next generation stadiums also highlights this balance between skilled technology and architecture.
Luuk de Haas
(13:56) So for the architects, this is a real challenge?
Reinout Barnhoorn
(13:59) Yes, it is.
Luuk de Haas
(14:00) Now to sustainability for the stadium. (14:05) Large sports complexes can have a big environmental footprint. (14:09) What strategies can be used to make projects like the Hangzhou International Sports Centre more sustainable?
Niels de Rooij
(14:16) Finally, with the complex this massive, we have to look at the urban heat island effect. (14:21) The strategy in Hangzhou is very much about bioclimatic design. (14:26) The organic load is inspired shapes, oranges for show. (14:28) They are optimized for air flow and self-shaping.
(14:32) In addition, grey water recycling is implemented on a massive scale. (14:38) We have thousands of people using the facilities, being able to treat and reuse the water on site is a huge win for the city's infrastructure. (14:46) As a result for this, the sports centre becomes a functional part of the city's greenhouse. (14:51) Design information inside the architects also mentions climate adapted and environmentally responsive strategies for the project.
Luuk de Haas
(15:00) So because they plan to be used to water, it's a good thing for sustainability?
Niels de Rooij
(15:07) Yes, that's right.
Luuk de Haas
(15:08) So modern stadiums often integrate smart technologies. (15:12) How can these technologies help improve energy efficiency and long-term sustainability in large venues?
Niels de Rooij
(15:18) Sorry, can you repeat the question?
Luuk de Haas
(15:21) Modern stadiums often integrate smart technologies. (15:24) How can these technologies help improve energy efficiency and long-term sustainability in large venues?
Niels de Rooij
(15:31) This is the point where it gets really futuristic. (15:34) We use digital twins and IOT-sensors. (15:37) Imagine thousands of sensors tracking exactly where people are and what the temperature is in every corner of the stadium. (15:42) A smart AI-system can then dim the lights or adjust the ventilation in real time based on where it's actually needed. (15:49) Therefore, this demand-based energy use prevents the massive waste to be seen in all the stadiums where the lights are on 100% even in the empty hallways. (15:58) In the long run, these smart systems ensure the stadium stays efficient for decades, not just years. (16:04) Similar smart stadiums technologies are discussed in research on the next generations, such as the article published by Proto-Thema.
Luuk de Haas
(16:12) So because these smart systems, the stadium is good for many, many years.
Niels de Rooij
(16:18) That is totally right.
Luuk de Haas
(16:20) Okay, so today's stadiums like the Jacksonville Jaguars Stadium, Ego Park Stadium and the Aungsu International Sports Centre show that modern sports venues are more than places to watch games. (16:33) Architects combine large-scale design with new technologies and sustainability, with iconic shapes, energy-efficient systems and renewable materials. (16:42)
These stadiums show how sports architecture is changing in growing cities. (16:48) Stadiums are becoming more multifunctional, sustainable than next. (16:53) So Niels, thank you for your time and your opinion about these stadiums.
Niels de Rooij
(16:57) Yeah, sure, no worries.
Luuk de Haas
(16:59) Reinout, also, thank you.
Reinout Barnhoorn
(17:00) Yeah, no problem.
Luuk de Haas
(17:02) This was our podcast and see you on the next one.
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