As the owner of a small but specialized elevator door system manufacturing firm, I get asked this question all the time—usually by fellow building contractors, property managers, or even other suppliers who’ve run into issues with non-compliant door systems that’ve gotten their projects delayed or shut down. It’s not just a trivial part of elevator design, either: elevator doors are the first and last thing passengers interact with, and they’re responsible for more safety-related elevator incidents than any other component. So let’s break down what standards and regulations govern these systems, why they exist, and how as a supplier I make sure my products hit every mark. Elevator Door System
First, it’s important to note that elevator door standards aren’t one-size-fits-all. They vary a bit by region, but most are rooted in two core frameworks: international consensus standards and national regulatory mandates. For North America, that means the American Society of Mechanical Engineers (ASME) A17.1 standard, which is the gold code for elevator safety in the U.S. and adopted in most states, and the National Elevator Industry Inc. (NEII) best practices that tie directly to it. In Europe, it’s the European Norm (EN) 81-20 and EN 81-50, which apply to all new passenger and freight elevators built in EU member states. For those working in global markets, there’s also ISO 8100, which aligns many of these rules to create a baseline for cross-border projects. What people don’t always realize is that these standards aren’t just suggestions—they’re legally enforceable in most places, and cutting corners on compliance isn’t just risky; it’s a liability waiting to happen.
Let’s start with the most critical safety standard for any elevator door: entrapment prevention, because that’s the biggest risk for passengers. ASME A17.1 Section 2.12 and EN 81-20 Clause 5.6 both mandate that elevator landing doors (the ones on each floor, not the cab door) must have a minimum 1,000 lbf (about 4,450 Newtons) of force to open manually from the outside if they’re closed and locked. Wait, that sounds like a lot—why? Because if a kid or an adult tries to pry a door open when the cab isn’t there, they shouldn’t be able to yank it open and fall into the shaft. But there’s a catch: the door system also has a safety reverse function. Both standards require that if an obstruction is detected while the doors are closing, they must reverse within a maximum of 2 inches of contact with that obstruction. No exceptions. I learned this lesson early on when a customer came to me with a faulty door system that reversed at 6 inches—their inspector failed their final walkthrough, and they lost a $200k commercial project because of it. Now every system my team leaves our facility goes through three separate tests of that reverse function, including testing with different materials (foam, wood, even a dummy’s arm) to make sure it triggers on any obstruction.
Next, there’s the gap standard, which is another non-negotiable. A common myth is that elevator doors fit tight, but actually, they have to leave a small space for thermal expansion—steel and aluminum expand and contract with temperature changes, so a door that’s too tight will warp or jam in extreme heat. But the standards set a maximum gap between the two moving door leaves when they’re closed, and between the door and the hoistway wall on the sides and top. ASME A17.1 says that gap can’t exceed ¼ inch (6 mm) for passenger elevators, while EN 81-20 sets the same max for side gaps, with a slightly larger allowance for freight elevators that handle heavier loads and more wear. There’s also the gap between the cab door and landing door when they’re aligned—again, max ¼ inch in North America, so a passenger’s shoe or a stroller wheel doesn’t get stuck. I recently had a client in Florida ask if we could widen the gap for their project because they thought it would make the doors open faster. I explained that not only is that a code violation, but it’s a safety hazard—small kids have slipped their fingers into larger gaps before, and the liability isn’t worth the marginal speed gain.
Then there’s fire safety, which is a big one for commercial buildings, hotels, and multi-family residential structures. Many regions require elevator door systems to have fire-rated assemblies that can block the spread of fire and smoke for a set period—usually 1 to 2 hours, depending on the building’s height and occupancy. ASME A17.1 has a specific section on fire service elevators, and the International Building Code (IBC) ties directly to that, requiring that the doors remain closed and sealed during a fire until the elevator is recalled to the ground floor for evacuation. In Europe, EN 81-58 covers the fire resistance of elevator components, including doors. What’s important here is that fire-rated doors aren’t just doors with a label slapped on them. They have to pass standardized fire tests where they’re exposed to controlled fire for the rated time, with no hot spots exceeding a certain temperature on the unexposed side, and no gaps that would let smoke pass. My team works with a third-party testing lab to get all our fire-rated systems certified annually, and we keep copies of those certificates on file for every client—inspectors will ask to see them during final inspection, so it’s not something you can cut corners on.
Accessibility is another key standard, especially since the ADA (Americans with Disabilities Act) in the U.S. and the Equality Act in the UK mandate that elevators be usable by people with mobility impairments, visual impairments, or other disabilities. For elevator door systems, ADA standards require that the opening force for doors be no more than 30 lbf (133 N) when opening automatically, and that the door opening width be a minimum of 36 inches (914 mm) for passenger elevators. That’s wide enough for wheelchairs, walkers, and motorized scooters to pass through, which makes sense. There’s also a requirement for door reopening time: the doors must stay open for at least 3 seconds after they reach the fully open position, and that time can’t be adjusted by the building operator to be less than 2 seconds, per ADA guidelines. I once had a property manager ask if we could cut the reopen time to 1 second for a high-traffic office building to move people faster. We explained that shorter times put people with mobility issues at risk of being hit by closing doors, and that even for able-bodied people, a 1-second gap doesn’t move traffic that much—plus, if someone is holding a heavy load, they might not make it through in time.
Wait, I should also mention mechanical durability, because even a door that’s safe isn’t useful if it breaks every month. ASME A17.1 and EN 81-20 both set a minimum number of cycles that a door system has to operate reliably for before major component replacement is needed. A cycle is one full open and close operation. For passenger elevators, the requirement is usually 100,000 cycles for low-traffic residential elevators, up to 1 million cycles for high-traffic elevators in shopping malls or train stations. That’s a huge number—if an elevator runs 10 times a day, 365 days a year, that’s 3,650 cycles a year, so a 1 million cycle door system needs to last over 270 years? No, wait, that’s peak traffic—high-traffic elevators run more like 100 times a day, so 1 million cycles is about 27 years. That makes way more sense, and it’s a key standard because it reduces maintenance costs for building owners. Our door systems are tested to hit 1.2 million cycles, just to be on the safe side, because we’ve seen too many competitors cut corners on durable hinges or motors, leading to door failures a few years after installation.
Now, a common confusion I run into is the difference between mandatory regulations and voluntary standards. A lot of people think ASME or EN are just industry groups making rules, but in the U.S., most states adopt ASME A17.1 as part of their state building codes, so violating it is a violation of state law, leading to fines, halted construction, or even liability if someone is injured. In the EU, EN standards are harmonized under the Construction Products Regulation (CPR), which means that any elevator product sold in the EU must meet the relevant EN standards to be CE marked—without that, you can’t legally sell it. So when I tell clients that our door systems are fully code-compliant, that’s not just a marketing line—it means they pass every legal requirement for installation and use in the regions we serve.
I also want to touch on newer standards that are emerging as elevator technology evolves. Smart elevator systems, which use destination dispatch software to group passengers, are becoming more common in tall buildings, and there are new guidelines from ASME A17.7 on how door systems integrate with those smart systems to reduce wait times without sacrificing safety. There are also standards for energy efficiency in door systems, since many buildings are working to meet net-zero carbon goals—reducing the energy used to operate doors by using more efficient motors and sensors is now a factor in some local building codes. For example, California’s Title 24 energy code has requirements for elevator components, including door systems, that reduce standby power use. We’ve invested in low-power door operators for our latest lines, so our clients can meet those energy requirements without paying extra for specialized components.
But here’s the thing: standards and regulations are only as good as the people enforcing them, and as a supplier, it’s our job to make sure our systems don’t just meet the minimum, but exceed them where it makes sense for safety and durability. I’ve heard horror stories of contractors buying cheap, uncertified door systems from overseas suppliers to save a few bucks, only to have them fail inspection, cause injuries, or require costly repairs within a year. That’s not just bad business—it’s dangerous. Last year, we had a client come to us after installing a cheap door system they’d bought online; their inspector found that the force required to open the landing door from the outside was only 300 lbf, way below the 1,000 lbf minimum, because the manufacturer skipped the heavy-duty locking mechanism. They had to remove the entire system and replace it with ours, costing them twice as much as if they’d bought compliant parts in the first place.
If you’re a building contractor, property manager, or architect working on a new project or renovating an existing elevator, take the time to ask your door system supplier for their compliance documentation: test reports for safety reverse, gap measurements, fire ratings, accessibility certifications, and cycle durability test results. Don’t just take their word for it—ask to see copies, and cross-check them against the relevant codes for your region. If you’re in a region that follows ASME standards, make sure the supplier’s system is listed on the ASME A17.1 compliant parts database; for EU projects, confirm that it has a valid CE mark for EN 81 series standards.
As someone who’s been in this industry for 15 years, I’ve seen firsthand how a well-built, code-compliant elevator door system protects passengers, avoids costly delays, and gives building owners peace of mind. It’s not just about metal, hinges, and motors—it’s about safety, reliability, and trust. If you’re working on a project and need a door system that meets all the latest standards, or if you have questions about compliance for your current installation, I’m here to help. Let’s connect to talk through your needs and find a solution that works for your project, no matter the size.
Elevator Safety System References
American Society of Mechanical Engineers. (2020). ASME A17.1: Safety Code for Elevators and Escalators.
European Committee for Standardization. (2020). EN 81-20: Safety Rules for the Construction and Installation of Lifts.
European Committee for Standardization. (2019). EN 81-50: Safety Rules for the Construction and Installation of Lifts.
International Organization for Standardization. (2019). ISO 8100: Lifts for the Transport of Persons and Goods.
U.S. Access Board. (2010). ADA Accessibility Standards for Transportation Facilities.
Huzhou Kenai Elevator Technology Co., Ltd.
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