Printed from the blog of Lori Greene, AHC/CDC, CCPR, FDAI
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Doors & Frames

Hollow Metal Standards

I recently needed to refer to a copy of HMMA-850, the NAAMM/HMMA standard for fire rated doors and frames.  I was pleasantly surprised to find this standard on-line as a free download.  Upon further digging, I found that almost ALL of the HMMA and SDI publications can be downloaded for free from their websites.  There […]


I’m having a couple of days of R & R in Burlington, Vermont, but the Doors of Burlington post will have to wait for a day when the weather is less inclement, or at least when I have a designated driver so I can hunt for doors from a moving vehicle. It has been tough […]

Architectural Woodwork Standards

At the Boston Chapter CSI meeting tonight, we had a presentation by the appropriately-named “Woody” Vaughn of Vaughn Woodwork Consultants about the new Architectural Woodwork Standards.  (I think I need a hardware-inspired nickname, but that will have to wait for another post.) The 1st edition of the Architectural Woodwork Standards was published on October 1st, […]

The Parthenon – Nashville, Tennessee

I’ve been to Nashville a few times, but somehow I missed seeing the replica of the Parthenon while I was there.  Luckily I received some reader photos of the gigantic doors there, and I also found some photos on Flickr and obtained permission to share them here.  Nashville’s replica of the Parthenon was originally built for Tennessee’s 1897 Centennial […]

Labels for Fire-Rated Frames

Questions about frame labels have come up several times this week, so I guess it’s time for a post.  I’ve pulled together some information from various sources and I hope some of you will chime in with your input. The most common questions on this topic are: Can a label on a fire-rated frame be […]


When I started this blog, my goals were to organize all of the code information I had into a searchable database, and to offer a more painless way to learn about hardware.  I think one of the hardest things about starting out in this industry is the way most of us learn about it – […]

MGM Grand Theater

As promised, I have some photos to post from my recent trip to Foxwoods Resort Casino in Mashantucket, Connecticut.  I don’t typically mention the locations of the photos I post, usually because I don’t want to get in trouble for showing their code violations.  Well, I’m not a gambler so I had plenty of time […]

Wicket Doors

The first time I ever saw a wicket door, it was for a post office project and I was working on the shop drawings.  I haven’t run into a whole lot of them since, but I saw a pair last weekend and risked the embarrassment of my friends to take some photos.  The employee at […]

Hospital Stops

Every so often, I wonder what I’m going to write about on this blog after I’ve covered all of the code requirements for doors and hardware.  I mean, it’s a very specific subject area so at some point I could run out of questions.  And then something comes up that I’ve never looked into, and […]

WW: Corah Factory Pair

This pair is located at the end of a walkway between two mill buildings in the Corah Factory in Leicester, England.  Check out the locks on both leaves (more photos here). Thank you to Sam Tait for allowing me to post this photo. You need to login or register to bookmark/favorite this content.

Square Edge vs. Beveled Edge

I was reading an article about blogging in Inc. the other day, and one paragraph really resonated with me: “The thing most people don’t understand is that the difference between a blog post and a magazine article is the difference between conversation and presentation,” notes Strauss. “If I were giving a presentation on a stage […]

Leather-Wrapped Doors

I was recently elected as a town meeting member for my town (a pretty large town – 68,000 people), and tonight I attended my first-ever town meeting.  It was pretty interesting to see government in action, but I also found time to hunt down some old doors for you all. You don’t see these old leather-wrapped […]

Upside Down Doors – Why?

Jon Dudley of Ingersoll Rand Security Technologies sent me these photos of a school in West Virginia, where apparently this was not a mistake – it’s the way the school wanted them.  For the life of me I can’t figure out why.  Any ideas? Maybe the outside of the school looks like this building that […]

WW: Old King’s School, Canterbury UK

Photos by Cathy Ma. You need to login or register to bookmark/favorite this content.

Doors in Pockets (not Pocket Doors)

Every time I specify hardware for a door that swings into a pocket, a little alarm sounds in my head because at least 50% of the time there will be a problem that urgently needs to be fixed at the end of the job.  This application requires coordination between the architect designing the pocket, the […]

“Secure” vs. “Secured”

I was at a security meeting for one of my projects recently, and I heard the security consultant refer to the “secured side of the door,” meaning the inside – the area that is protected by the security system. I don’t know about you but my brain was imprinted long ago with the method of […]

INNadequate Closer (& More!)

I spent last weekend in Stowe, Vermont with one of my BFFs and we stayed at an “inn,” which seems to mean bigger than a bed and breakfast but not as modern as a hotel.  As my friend said, “I got the keys…they’re real keys – how quaint!”  I won’t get into how the lock […]

Miss Me? :-)

As many of you know, I took some time off last week.  The plugin I had installed to scroll random posts broke my mobile site so I had to uninstall it.  Hopefully you all read that last delayed egress post in depth to keep you occupied.  🙂 I caught up on a lot of stuff […]

Decoded: Flush Bottom Rails (Updated July 2019)

This post was printed in the April 2012 issue of Doors & Hardware Updated November 2017 The 2010 ADA Standards for Accessible Design (available for download at officially went into effect on March 15, 2012. The requirement for a 10-inch-high flush bottom rail on manual doors is now included in the ADA standards. Previously, […]

Universal Studios Orlando

When I was in Florida a couple of weeks ago for the IAPSC conference, it also happened to be school vacation week so I brought the kids along for a visit to my parents’ house.  They all survived while I was in Miami Beach, so when I got back from the conference I took them […]

UL Fire Doors <32" Wide

UPDATE:  As of October 4, 2012, UL has reversed this directive.  The bulletin can be downloaded here. I was hoping to hold off on posting anything about this until there was some sort of resolution, but I’m seeing so many emails and discussions I decided to post what I know now, and follow up when […]

Is this still the World’s Heaviest Door?

Brenda Dove of Ingersoll Rand Security Technologies spotted this door on the website, where they feature a new energy-related photo each week.  In 1979, this was the world’s heaviest door, weighing in at 97,000 pounds.  I wonder if it still holds the record.  Seen any big doors lately? Caption from  For 35 years, […]

More Big Doors

I just love when I ask a question and some of you actually answer me.  Following up on yesterday’s post about “The World’s Heaviest Door“, here are a few more big doors: From Nathan Langley of Phillips-Langley & Associates (check out their blog!), some big doors manufactured by Electric Power Door and installed at the […]

WW: Vertical (Not Vertical Rod) Panics

I couldn’t have said it better myself…“Mullion?  Who needs a mullion when you can just turn the exit devices 90 degrees?”  From Chris Steward of Steward Steel, by way of Jim Phillips of SBS Associates.   You need to login or register to bookmark/favorite this content.

Closer Pressure Equalizer

Today I was able to spend some time on the trade show floor at CoNEXTions 2012, the Door & Hardware Institute conference.  It was great to see so many old friends and some new products.  My pal and code aficionado, Steve Bettge, tracked me down and escorted me to a booth where there was a product […]

Doors Around Boston

On a weekend trip to Family Science Day, I saw these super-tall doors at the convention center: Can you spot the code issue with the convention center’s entrance doors below? Boston’s Faneuil Hall was built in 1742 as a meeting hall, and is now part of one of the most visited tourist sites in America.  […]

Hang It Up

Any theories about what’s happening here?  Steve Poe from Ingersoll Rand Security Technologies sent me the photo and we’re perplexed. You need to login or register to bookmark/favorite this content.

Rochester Opera House

To celebrate 5 years of iDigHardware, don’t forget to send me some photos in exchange for a chance to win a $50 Amazon gift card! Last week I saw an egress situation that I have never seen before.  The Rochester Opera House and City Hall first opened in Rochester, New Hampshire, in 1908.  But in […]

Woodland Park Zoo, Seattle

Today’s winner of the 5th-birthday gift card is Dan Droker of CCI Automated Technologies, who sent me some great photos from the Woodland Park Zoo in Seattle. It makes me happy to imagine some of you embarrassing your spouses and kids by taking door photos during family outings. My family has begun to automatically sense when a door piques my interest, and they make themselves scarce. Except the little one who wants to be in every picture…

Wood Door Dowels

A long time ago, mostly before my time, some wood doors had a dowel on the edge that would indicate the type of core that was used. Several people have asked me to post a chart…

Las Vegas Encore

I’m in Las Vegas at ISC-West (come visit me in Allegion booth #20031 if you’re here!), so I won’t have time to write a post for today, but in case you missed my previous photos of the doors of Las Vegas…

WW: “My door won’t latch.”

Gary Huizen of Huizen’s Locksmith Service posted this Wordless Wednesday photo on the iDigHardware Facebook page…how many times have you arrived on a jobsite to respond to a closing/latching problem and found something like this?

WWYD? Grout or No Grout?

I have worked with architects who specified grout for fire-rated frames, but as far as I know this is not typically required by the listing procedures. NFPA 80 – Standard for Fire Doors and Other Opening Protectives does not state that grout is required…

CONSTRUCT: Clear, Complete, Concise, and Correct Door Schedules

Architects and specifiers may wonder why hardware consultants need so much detailed information – and why it makes us crazy when changes are made and we don’t know about them. It all starts with the door schedule…here’s why each field matters…

Back-2-Basics: Handing 101

I have been asked about door handing SO MANY TIMES over the years…hopefully with your help we can address the questions once and for all. Leave me a comment if I forgot anything!

OTU (Openings Terminology for the Unenlightened) – Frames

This is SO COOL. I LOVE it. I know it probably seems like it doesn’t take that much to excite me, but when this hit my inbox, it really made my day…all because Dan Dateno of BR Johnson combined his sketching ability with his career in doors and hardware to illustrate alternate definitions for common door and hardware terminology.

6 Accessibility Changes to Watch Out For (November 2014)

The 2010 Americans with Disabilities Act (ADA) Standards for Accessible Design went into effect in March of 2012, but there are several requirements that continue to surprise architects and specifiers as well as door and hardware suppliers. These issues can be costly to resolve if they’re discovered after the doors and hardware are on-site, so it’s important to stay current on the requirements…

Steel Door Institute: Tornado Doors

Last year I wrote a couple of blog posts about tornado doors – one called Tornado Safety in Schools, which included articles and other information about tornadoes that had recently occurred in Oklahoma and Texas. The other post was Shelter from the Storm, which described changes to the 2015 International Building Code…

Decoded: Calculating the Egress Width of Door Openings (Updated July 2017)

A common question when replacing doors and hardware during a renovation is whether one leaf of a pair can be “fixed” in place, or whether an opening can be eliminated completely. It’s very risky to make this decision without consulting the Authority Having Jurisdiction (AHJ), but it is helpful to understand some of the factors that could affect the location, size, and quantity of required exits before preparing your request for the AHJ…

HMMA 850-14: Fire Protection and Smoke Control Rated Hollow Metal Door and Frame Products

The Hollow Metal Manufacturers Association (HMMA) is a division of the National Association of Architectural Metal Manufacturers (NAAMM), and publishes more than two dozen reference documents related to hollow metal doors and frames…

Baltimore DHI Show, Then and Now

Last week I published a blog post on my excitement about the upcoming CoNEXTions event, which was cancelled later that day because of ongoing civil unrest in Baltimore. I received the Karpen Steel newsletter today which shares Rachel Smith’s perspective, and I asked for permission to share this letter here…

FF: Unfixable

Yesterday’s post was not ready in time for the afternoon notification, so in addition to today’s Fixed-it Friday photo, there’s a bonus set of photos from the Bronx Zoo. If you’re reading this on the email notification, you should see the zoo link below. Happy Friday!

Embarrassing 50% Failure Rate

Quite a few people sent this cartoon to me, so I obtained permission to post it here. It looks like the “normal” people are starting to figure out the secrets of the door and hardware industry. Enjoy!

SDI: Smoke Gasketing Requirements for Opening Protectives

Questions on smoke gasketing continue to come up, so the Steel Door Institute asked me to write about it for their quarterly newsletter. You can subscribe to their newsletter here…

Rotary Natural Birch

I was so happy to arrive at the hotel last night and find this photo from Austin Bammann, of Central Indiana Hardware. This is a great illustration of the variations and unintended patterns that can occur with rotary cut natural birch doors (“To infinity…and beyond!”)…

Basics of Steelcraft Hollow Metal Doors (video)

Rounding out our “intro” series of whiteboard animation videos…here’s an introduction to hollow metal doors. The rest of our whiteboard animation videos can be found on the Allegion Training page, or on the Videos page of What other topics would you like to see addressed in future videos?

WWYD? Vision Lights in Wood Fire Doors

My question for you is this…if you supply, specify, or install wood fire doors, is the glazing typically installed in accordance with NFPA 80 – at the factory or in an authorized wood shop?

FF: Inactive Active Leaf

According to Ken Cook of Allegion, today’s Fixed-it Friday photo is from a church in Indianapolis, where a small earthquake in 2004 broke some underground pipes. This is one way to solve the problem…

WW: Crooked

This photo was sent to me by Joanne Gretter of Herman Gibans Fodor, Inc., and I really have no words.

WWYD? Old Fire Doors

When an old fire door needs to be modified, what precautions are taken to ensure that the door does not contain hazardous material?

Repairing Holes and Dents in Fire Doors

A very common repair includes installing steel fasteners in unused holes, grinding off the fastener heads, and concealing the repair with Bondo, but this is not specifically mentioned in NFPA 80…

WWYD? Hardware for Glass/Aluminum Doors

If you’re involved in specifying, supplying, coordinating, or maintaining hardware for aluminum or glass doors, WWYD? Where should the hardware be specified and how do you ensure that all of the details are addressed…

WW: US Bank Stadium

I might need to go on a field trip to the Vikings’ new stadium…just to see these doors! WoW! Blake Nelson of Allegion sent me these photos from a recent site visit…

What is CPTED?

CPTED (pronounced sep-ted) stands for Crime Prevention Through Environmental Design, and is defined as a multi-disciplinary approach to deterring criminal behavior through environmental design…

Horizontal Sliding Door

Charles Anderson sent me this photo of a horizontal sliding door he found on a marked exit in an antique store. So…is it code-compliant?

WWYD? Thermal-Break Frames

What drives the need for thermal-break frames and similar products in your jurisdiction? Is it an energy code, another code or standard, LEED…

QQ: Fire Door Frames with Existing Wall Anchors

“When I’m installing a fire-rated frame into an existing opening using existing wall anchors, how much space can I have around the frame, and what is permissible to use to seal that gap?”

FF: Quirky Entrance

I love this door (although I question its structural integrity) – and yes, I have been called quirky a few times. Why be normal?!

FF: Wobbly Door (video)

Today’s “shoulda” Fixed-it Friday video came from Luis Gabriel Gonzalez, one of Allegion’s specwriter apprentice. What happened here???

WW: Bent

I have no idea what happened here. Wordless…

Decoded: Temperature-Rise Doors (July 2017)

With the increased use of sprinkler systems in commercial and institutional buildings, the need for temperature-rise doors has declined, but there are still locations where they are required…

WWYD? Bottom Gap on Fire-Rated Frames

The application is in a building where the floors are out of level, and the fire door frames are installed with one jamb flush with the floor, leaving the other jamb with a gap…

Decoded: Fire Door Assembly Classifications (October 2017)

NFPA 80 – Standard for Fire Doors and Other Opening Protectives, classifies openings protected by fire door assemblies in one of five categories…

FF: Hospital Door

What led to this “fix”? Any theories?

Decoded: Alterations to Fire Door Assemblies (Updated October 2017)

You may remember that I’m working on a series of online code classes, which will be available early in 2018.  To support those classes, I am updating some of my past Decoded articles to include revisions from new editions of the codes and standards.  Here is the latest information regarding alterations of fire door assemblies. […]

FF: Ship Shape

This is one of the most amazing doors I’ve ever seen!

WW: Sudden Drop

8 Floors – YIKES!

QQ: Empty Tab Slots

The increased enforcement of the inspection requirements for fire door assemblies has brought some pretty intense scrutiny upon the various components.  In some cases we’re finding that NFPA 80 and the model codes don’t currently address the fine details of how these assemblies are tested and constructed. I was recently contacted by a facility that […]

Decoded: Update on Storm Shelter Doors (March 2018)

If you have seen more projects incorporating storm shelters lately, this is likely due to changes in the International Building Code (IBC).

WWYD? Handing for Communicating Doors

How do you “hand” a communicating door? Are the doors LH/RH? Or LHR/RHR?

WW: Electrical Room Pair

I’m not an expert on the electrical codes, but this just seems wrong to me.

Amsterdam Free Library

What’s the problem with this door? Any ideas?

Maximum Door Width

Ann Timme of Allegion sent me this photo the other day and it reminded me to tell you about a potential change to the International Building Code (IBC).

QQ: Dwelling Unit Doors

On a multi-family building, are the dwelling unit doors required to have a 10-inch bottom rail?

FF: Louvers

One more photo from our time in Asheville…this is not how I would have handled the need for additional airflow at this church entrance.

Oversized Jamb Depth

If I found this application in the field, I would contact the frame manufacturer and see if the application is allowed by their listing. I’m pretty sure the answer would be “no.”

FF: KittyKorner

Creative, but I have a few concerns. How about you?


The director of maintenance for some nursing homes in NYC sent me this photo and asked how to avoid this problem in future installations. Any constructive suggestions?

WWYD? Frame Elevations

Someone just asked me about software for creating shop drawings, elevations, and details. It’s been a really long time since I’ve done submittals, so I told him that I’d ask the experts – YOU!

More on GWB Penetration – Fire-Rated Frames

Have you ever run into a situation where a piece of hardware or a mortar box in a fire-rated frame prevented the GWB from penetrating 1/2-inch into the frame, as required by NFPA 80?

FF: Corn Cob Core

Bill Cushman of Genesis Door and Hardware sent me this link to a door with an unusual core…I was Wordless even though it’s Fixed-it Friday!

Thermal Bow

When an exterior metal door binds on sunny days but works just fine at night, it’s likely that the problem is caused by thermal bow.

FF: Wheelie

I have a theory about what happened here…what’s yours? This “fix” shows the importance of making sure the correct hardware is specified from the get-go.

FF: Low Light

Any theories about what happened in today’s Fixed-it Friday photo?

WW: (Very) Temporary Door

I wonder how long this temporary door will last.

Any wagers?

WWYD? Indicating the Active Leaf

Calling all architects…we need your help with this one! Do you indicate on the drawings which leaf of a pair should be active and which is inactive?

See the index for another category:

  • Accessibility
  • Adon Brownell
  • Articles
  • Automatic Operators
  • Back-2-Basics
  • Beautiful Doors
  • Close the Door
  • Code Development
  • Construction Specifier
  • Digging Into Codes
  • Door Closers
  • Doors & Frames
  • Doors Gone Wrong
  • Egress
  • Electrified Hardware
  • Everywhere I Go
  • FDAI
  • Fire Doors
  • Fixed-it Friday
  • Flush Bolts and Coordinators
  • Funky Applications
  • Gasketing & Thresholds
  • Gates
  • General Info
  • Glass
  • Guest Post
  • Health Care
  • Hinges & Pivots
  • Historical
  • Hold-Opens
  • Industry Profiles
  • LEED/Green
  • Life Safety Digest
  • Locks & Keys
  • Locksmith Ledger
  • Mexico Update
  • My Photos
  • New England Codes
  • News
  • Opinion
  • OTU
  • Panic Hardware
  • Protection Plates
  • Push/Pull
  • Q&A
  • Quick Question
  • Quick-Tips
  • Reader Photos
  • Road Trips
  • School Security
  • Signage
  • Sliding and Folding Doors
  • Smoke
  • Stops
  • Uncategorized
  • Urban Exploration
  • Videos
  • WHY?
  • Windstorm
  • Wordless Wednesday
  • WWYD?

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