What’s that? Gang Bus Option
I was working on a presentation the other day about questions on delayed egress locks, and I came across the term "gang bus" related to the Von Duprin Chexit. When would you use it?
I was working on a presentation the other day about questions on delayed egress locks, and I came across the term "gang bus" related to the Von Duprin Chexit. When would you use it?
For a roof door that allows access to mechanical equipment on the roof, what are your preferred locking methods or functions - both electrical and mechanical? What would you do?
Are the electromechanical locks typically used for individual residential entry doors required to be listed to UL 294 or UL 1034 in order to comply with the model codes?
The model codes are not very specific about this topic, so my question for you is this: What's your take on the manual rearming of a delayed egress lock? WWYD?
I saw today's Wordless Wednesday photo on the Crap Locksmithing Facebook page, and I'm still wondering what is happening here. Any ideas?
I like to share case studies as a way to understand how certain products can help to fulfill design concepts, code requirements, or functional needs. Here's another great example.
Colin Watson of Allegion sent me today's Wordless Wednesday photo of an application that he and Eddie Dobbins ran across in a public library...mag-locks with deadbolts as the mechanical back-up. YIKES!
Today's Fixed-it Friday photos remind me of a problem that I had on a project years ago, and a good question to ask during a project meeting...when will the access control system go live?
Mark Kuhn's next guest blog post is an article that he wrote for Campus Security Today about using electric latch retraction locksets in new and retrofit applications.
I have occasionally seen mag-locks used to hold doors open, but not typically on the floor where they become a major tripping hazard!
If one set of doors was lockable and the other was always unlocked (not lockable), I think this could be considered a dead end corridor. How would you have specified the hardware for these doors?
In this Decoded article, I took a closer look at the requirements related to fire protection systems for doors with electrified hardware.
I have worked on so many projects as a specwriter where the main concern seemed to be aesthetics...after the construction phase is over you never know what will happen!
I've updated this Decoded article with the current code references from NFPA 80, the International Building Code (IBC), NFPA 101, and NFPA 72.
The more I look at today's Wordless Wednesday photos, the more deja vu I'm feeling. Do these doors at the Stockyards look familiar to anyone else?
I received today's Wordless Wednesday photo from an AHJ - the photo was taken in a school, where the mag-lock was added to deter elopement. Note the height of the push button!
Tim Weller of Allegion sent me today's Fixed-it Friday photo and I'm not sure what to think, between the sensor bar on an inswinging door and the deadbolt that overrides the electrified hardware.
This is Week 4 of BHMA's 100th Anniversary Challenge, and the topic this week is innovation - from new designs and features to process improvements and standards leadership.
I'm working on updating some past Decoded articles for a project that I'm working on...this one addresses the requirements for electric strikes installed on fire door assemblies.
Paul Laseter of Niles Bolton sent me today's Fixed-it Friday photo, taken in a maternity suite. Do you think this was an intentional double entendre? :D
Are access control systems as safe as they were before, if only the electrified locks are required by code to have the UL 294 (or UL 1034) listing? What would you do?
I don't claim to cover all state code requirements related to doors (I leave that to our ACE Network) but every so often a code modification catches my eye. Here's an update on Massachusetts.
In this Decoded article for the next issue of Door Security + Safety Magazine, I answered several frequently asked questions that apply to electromagnetic locks.
Just yesterday I was talking with a class about prepping existing frames for electric strikes. I'm not an installer, but something seems off here. What do you think?
I have an article in the Summer issue of Life Safety Digest, that covers the code requirements for controlled egress locks in health care units where patients require containment.
Today's Wordless Wednesday post is definitely not wordless, it includes an explanation of why these hospital doors would not be compliant with the US model codes (the hospital is in Mexico).
I saw this Fixed-it Friday door down at the home improvement store. What do you think? Is this extended door loop a legit way to transfer the power to the hardware?
Mark Kuhn is following up on last week's electrifying post about electric strikes, with his thoughts on electromagnetic locks. Do you have anything to add?
I recently saw some delayed egress locks "in the wild" at the Aeropuerto El Dorado in Bogotá, Colombia, and I had a few thoughts on the applications and in particular, the signage.
Mark Kuhn: Just about every week, I need to convince someone that electrified locks and electrified panic hardware are a far better choice than an electric strike. What do you think?
The door in today's Fixed-it Friday photos is another example from my trip to Colombia, this time in Cali. This door would not comply with the US model codes for egress...can you see why?
Today's Wordless Wednesday photos were taken in the lobby of an apartment building, where the ONLY way to exit was for someone at the security desk to press the release button. Yikes!
Colin Watson of Allegion sent me today's Wordless Wednesday photos, reminiscent of the days when a locked door would have a key hanging on a nail nearby.
It's a good thing that the problem with this frame prep was noticed before the frame was installed...can you tell what's wrong with today's Fixed-it Friday photo?
Tim Chow sent me today's Fixed-it Friday photo of a pair of doors with access control, and I can't figure out what those little wires are for. Any ideas?
UL has recently updated an article that will be helpful when conducting a search for product listings in UL Product IQ. Check out today's post for an example of how to use this directory.
In this month's Decoded column for the School Security + Safety edition of Door Security + Safety Magazine, I address several considerations for securing stairwell doors.
My next Decoded article covers one of the more confusing topics related to electrified hardware - are these products required to be listed to UL 294, UL 1034, neither, or both???
In the January/February issue of Door Security + Safety magazine, I have an article giving a preview of two important changes that have been approved for the 2027 I-Codes.
I'm preparing to do some training on this topic, so I'd love to get some feedback from readers. Please share your insight/experience in the comments!
Today's Quick Question relates to a change to the 2024 IBC: What type of lock may be used to secure an egress door leading from an elevator lobby to an exit access corridor?
Check out my article in the Winter issue of Life Safety Digest, which clarifies the requirements related to electrified door hardware.
The Schlage XE360TM Series has been named the top product in the SecurityInfoWatch.com Readers' Choice Product Award in the Door Hardware & Locks category!
If I had to name the one code section that has caused me the most pain and suffering during my career, the section addressed in today's Quick Question post would be the one.
In his latest post, Mark Kuhn addresses a common question that comes up during code review...What's the purpose of an RX switch in the door-mounted hardware?
If you're not familiar with the SLA page, it's THE resource for the code requirements related to electrified hardware and special locking arrangements on iDigHardware. Now updated!
The latest post from Mark Kuhn addresses a type of facility that is becoming much more common these days - data centers. How do you think the model codes should address these buildings?
Jamie Lyn Callahan of Allegion sent me today's Wordless Wednesday photos, taken during a kids' birthday party at an indoor playground. This door makes for a great "teachable moment."
Check out my crossword puzzle from the conference issue of Door Security + Safety Magazine, to review some of the code requirements related to electrified hardware!
Mark Kuhn's latest post addresses an issue that I wrote about a while back...it's been 10 years since my original post, so I guess it's time to take a fresh look. :D