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This Roof Should Never Have been Built | Plainly Difficult

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The video investigates the tragic structural failure at Real Plaza Jirau in Trujillo, Peru, which occurred on February 21st of that year during peak shopping hours. The collapse involved a large section of the roof above a food court and children's play area, plummeting onto unsuspecting shoppers just nine years after the building opened. This incident was particularly alarming given the mall's history; it had previously been ordered shut in late 2023 due to known structural issues but was reopened under political pressure at the start of 2025. The disaster resulted in six deaths, including two children, and left over eighty people injured before emergency services arrived nearly half an hour after the initial collapse. The investigation revealed a combination of design flaws and material negligence as primary causes for the catastrophe. Although the roof was designed to withstand a load resistance of at least 30 kilograms per square meter, poor drainage and insufficient slope allowed water accumulation during heavy rains, pushing the actual load on that specific day over 100 kilograms per square meter. Compounding this environmental factor were critical errors in construction: weaker A36 anchor bolts were installed instead of the specified high-strength A325 bolts required by the plans. Furthermore, these inferior bolts had begun to rust before the collapse, a defect that remained hidden because they were concealed beneath steel beams and difficult for inspectors to see without dismantling parts of the structure. In the aftermath, significant legal and financial repercussions followed the tragedy, with criminal probes targeting local managers, national executives, city inspectors, and municipal officials who bore responsibility for safety oversights. The mall operator, Intercorp, faced substantial fines totaling millions of dollars for non-compliance with security standards and protocols regarding emergency response times. Following the incident, authorities ordered a shutdown of Real Plaza Jirau that lasted over eighteen months while similar structures across Peru were inspected to identify other potential risks. Despite these actions and leaked design documents exposing the discrepancies between planned specifications and actual construction, an official final report detailing every aspect of the cause was still pending at the time of the video's conclusion.
Read the full video transcript
I love me a bit of an outing to a shopping mall. Here near me, the best I can think of is Bluewater. The whole place is designed to keep you and more importantly your wallet there all day. Shops, a cinema, things for the kids to do, and importantly for my waistline and for our video, the food court. This setup is hardly unique or original to the United Kingdom. It's used all over the world to part shoppers from their money. And for our short documentary today, we are focusing in on Peru and one of its many shopping malls. The Real Plaza Jirau. But why is this the subject for the video? I'm guessing you've seen the title card, so no points for a quick guess, I'm afraid. It is because just over a year ago, this shopping mall was the subject to a structural failure. The event would unfold on the evening of the 21st of February 2025, a peak time for shopping, resulting in a large section of the building's roof crashing down on unsuspecting shoppers below. What was even worse was that the roof was only just 9 years old. Today we're looking at the Real Plaza disaster. My name is John and welcome to Plainly Difficult. This video wouldn't have been possible if it wasn't for my YouTube, Ko-fi and Patreon members. If you want to get early access to the channel's videos, but you can from just £1 per month. And as always, the links will be in the pinned comment below. >> [music] >> The Real Plaza. So, Real Plaza is a chain of shopping centers in Peru. And much like the defunct Into, or the very much alive Westfield here in the UK, the company operates across the country of Peru in roughly 13 cities. It is a subsidiary of the multi industry Intercorp. The Real Plazas started popping up in the mid-2000s. With the company's first site, Chiclayo, followed up by our location for our story today, in the city of Trujillo. Now, I should say some of the company's sites had been operated pre this company starting up and had been rebranded, but that's kind of irrelevant for our story today. Anyway, the Real Plaza in Trujillo opened in 2007 and would in the following years be extended and added to, having two department stores, a H&M store, and Intercorp-owned Plaza Vea hypermarket, and Cineplanet cinema. So, parts of the growth of the site a food court would be added. We can see the increase in the mall's sprawl from these Google Earth's images over the years. This was built, the food court, I should say, in 2015. And just a year later would be covered with a rather unique-looking roof. As we see here, it was a round covering. It created an open and airy area for fast-food outlets with a kids' play area in the middle. Now, the roof was made up of steel beams bolted together with a circular center steel bolted section with a smaller circular roof bolted on top of that. The beams were supported on reinforced concrete columns, which were mounted with anchor bolts. These were somewhat concealed under the steel beams, meaning they weren't really very visible for easy inspection. Connected to the steel beam were steel purlins that created a web-like area in which the roof steel deck would be placed, which in turn had insulation and a waterproof membrane placed on top of all that. The roof, as installed, had a very small slope, resulting in not the best of water-shedding capabilities. Now, the load of the roof was transferred into the concrete columns, which included the vital anchor bolts. The roof design called for a load resistance of at least 30 kg per square meter. Now, an uneducated idiot like myself thinks a country like Peru is hot and dry all year round. Well, it's not. The country does experience rainfall, not as often, especially in Trujillo, as say here in London, but structures need to have proper drainage for when it does rain. This was something that reportedly was not properly installed on the food court's roof, which leads us on to the next section of our video with an eerie word counts on this script of 666 words so far. The disaster. It is the 21st of February 2025, and the Real Plaza is enjoying a Friday full of retail therapy. This part of the year is a country's rainy season, and it had been raining, and February was much wetter than previous years with an average of 58.2 mm, but wasn't out of the ordinary for this period of the year. Just a couple of years earlier in 2023, the average for January was in the 60 mm range. Regardless, as the day drew on into the evening, and the food court's peak time arrived, people milled around enjoying the shopping and cuisine on offer. The playground's area in the middle of the court was relatively empty owing to the time of day. There was nothing apparent to warn anyone of what was about to happen. Suddenly, at 20:41, the roof structure crashed down into the open area below filled with shoppers. Steel beams and the superstructure above plummeted down. This was an area of roughly 700 to 800 square meters, crushing tables, seating areas, and sadly the kids' playground. Just looking at the stills on the CCTV shows the carnage that was unleashed. The building had failed along the northeastern area of the roof, leaving the opposite side still precariously laying on its supports. Many managed to flee the area with others desperately trying to call out to any survivors trapped under the half-collapsed structure. Almost immediately phone calls to the emergency services and reports to social media were made by witnesses of the collapse. The disaster would only be officially reported to emergency services by the mall at 9:11 p.m. Nearly half an hour after the initial collapse. Emergency workers arrived on site and began searching through the fell structure, rather tragically including the kids areas ball pond. Over the following days, survivors would be found in addition to those who were not so lucky. The death toll, which was initially reported at three, would rise to six. Tragically two of whom were under the age of 18. In addition to this, there were 81 injured, which also included many children. The mall would be shut down completely to customers, remaining shut even now some 18 months later. Many more similar structures throughout the country would be inspected, highlighting some issues requiring temporary closure for repairs. The disaster would cause outrage, which would lead to multiple cases of speculation on the cause of the disaster. The aftermath and cause. On the 22nd of February 2025, a criminal probe into the collapse would be released aiming at finding the cause of the six deaths. The main focus for criminal culpability fell onto local manager Louis Santa Maria, national manager Masayoshi Shimizu, as well as other site staff, city inspectors and municipal officials. Now, an official cause of the collapse hasn't been released yet, but we can look into the generally accepted cause. Interviews of the witnesses claimed that there was no real warning of the collapse apart from banging noises resembling an earthquake shortly before the structure actually failed. So, the design plans of the building were leaked in 2025. These had been previously held onto by Real and hadn't been made public. But, their leak has allowed various news agencies to dig into the building's design. One issue that has been posited in the media is of that of the anchor bolts. A36 bolts were installed, but the plans had actually called for the much stronger A325 bolts. The ones installed were classed as standard low-carbon structural steel, whereas the spec'd ones were high strength heat-treated structural bolts. Now, remember earlier on when I said that the design had a low resistance of around 30 kg per square meter? Well, due to the rainfall, it was estimated that the load on the roof on the day of the disaster was over 100 kg per square meter. This was due to the poor pitch of the roof and the apparent lack of proper drainage. Investigators found that the weaker anchor bolts had also been showing signs of rust, which wouldn't have been seen when the structure was intact due to it being difficult to inspect. Interestingly, the mall as a whole was under scrutiny with its roofing structure's issues being very well known. When in December 2023, the mayor of Trio at the time ordered the mall to be shut down over structural issues, resulting in the mall being temporarily closed. However, the site was actually reopened at the start of 2025 under higher-up political pressure. Now, Intercorp would be fined around 500,000 soles in August 2025 for non-compliance of protocols during the collapse of the roof, i.e. the late calling of emergency services. Later on, they would be fined an amount of 8 million soles in January 2026, citing non-compliance of established security standards. That's around 1.7 million pounds or just over 2 million dollars. But, we are still waiting for the official investigation report. So, for the watch this space and any future people, please let us know in the comments below. So, that's my video on the real Plaza to Rio roof disaster. It's going to be a three on my scale. This is what I got from my root cause analysis card. Do you agree? Let me know in the comments below. This is a Plane Talking Productions video is produced by me, John, in the currently very warm corner of South London, UK. It is currently the start of July about the time of recording this script, and today it has been 20° C. Anyway, thank you very much for watching. All I have to say is, Mr. Music, can you do me a favor and play me out, please? >> [music] [music]