You don't think of a high-rise lift as a death trap until the power goes out and the smoke starts rising.
On July 14, 2026, a massive fire tore through the Oxy tower, a major redevelopment project in the heart of Brussels. In the chaotic moments after the alarms sounded, around 250 workers rushed to evacuate the active construction site. Most made it out safely. Six did not.
When firefighters finally cut their way into the building's elevator shafts, they made a grim discovery: multiple bodies trapped inside a lift that had plummeted to the ground or become stuck mid-shaft.
This tragedy isn't just a freak accident. It's a stark reminder of the unique, often overlooked hazards of active construction sites, where standard high-rise safety systems don't yet exist.
The Anatomy of the Brussels Tower Fire
The Oxy tower sits just a short walk from Brussels' historic Grand Place. The building was undergoing a massive, top-to-bottom transformation to turn the old structure into a modern complex of offices, apartments, retail spaces, and a hotel.
Around 8:00 AM, a fire broke out on the second floor.
Normally, a second-floor fire in a finished building is relatively easy to contain. But construction sites are different. They lack the physical barriers, sealed fire doors, and pressurized stairwells that keep smoke and flames from traveling.
Instead of staying localized, the fire quickly found the building's open elevator shafts. The shafts acted like chimneys, sucking the flames upward and funneling them into an underground floor, sparking a secondary blaze.
As the smoke surged through the shafts, two elevators carrying workers became trapped.
Why Elevators Are Fatal in a Fire
We've all seen the signs next to office elevators: In case of fire, use stairs.
In a finished, occupied building, elevator systems are programmed to automatically recall to the ground floor and lock their doors open the moment a smoke detector trips. This prevents anyone from using them and keeps the shafts clear.
On an active construction site, those smart safety systems are rarely fully operational.
When a fire starts in these environments, several things go wrong at once:
- Power Failure: Fires quickly burn through temporary electrical lines, cutting power to the lift motors and leaving passengers stranded between floors.
- The Chimney Effect: Elevator shafts are vertical vacuums. Heat, toxic carbon monoxide, and thick black smoke naturally rush toward them, filling the lift car within seconds.
- Mechanical Failure: Extreme heat can warp the steel guide rails or melt the cables, causing the lift to jam or, in worst-case scenarios, plummet.
According to Brecht Speybrouck of the Brussels Labour Prosecutor's Office, rescue teams had to navigate structural debris and extreme heat just to get limited access to the crushed lift cabins.
The Search and Recovery Obstacles
The scene on the ground at Place de Brouckère quickly became a major emergency operation. Belgian King Philippe and Prime Minister Bart De Wever visited the site to support the emergency crews working in punishing conditions. One firefighter had to be treated on-site for severe heat exhaustion, while two other workers were rushed to a military hospital with severe burns.
For hours, rescue teams couldn't get a clear count of the victims because the wreckage was too unstable. Part of a construction hoist collapsed inside the shaft, blockading the second lift cabin.
"Due to the debris, working conditions are very difficult," Speybrouck noted during the recovery efforts. "The recovery operations will therefore take several more hours".
Ultimately, the fire department confirmed that six workers lost their lives in the shafts, marking one of the deadliest construction site disasters in the city's modern history.
What This Means for Construction Safety
This disaster exposes a massive regulatory blind spot.
Too often, developers treat safety during the construction phase as secondary to the safety of the finished building. We design elaborate fire suppression systems for future office workers, but the laborers building those spaces are left working with temporary, high-risk setups.
If you run a construction site or manage high-rise redevelopments, this tragedy should prompt immediate action. You must reassess your temporary evacuation plans:
- Ban Lift Use During Evacuation Drills: Workers must be trained to never, under any circumstances, use temporary or permanent lifts during an emergency. Stairwells are the only option.
- Isolate Elevator Shafts: During hot work or high-risk construction phases, ensure temporary smoke barriers are used around open vertical shafts to stop the chimney effect.
- Implement Independent Backup Power: Temporary construction hoists and lifts should have redundant, fail-safe power systems that allow them to safely descend to the lowest level if the primary power grid fails.
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