Strange Observations – Sprinkler in the Alcove

Continuing in a series of strange things that I have seen while consulting at hospitals…

The good news is you have an alcove in the corridor where you can store linen carts. The bad news is a sprinkler head was installed in the alcove preventing you from storing linen carts.

In this photo, the top of the linen cart is too close to the sprinkler deflector. You must maintain at least 18-inches clearance underneath the sprinkler head.

I’m not an expert on sprinkler design, but I suspect they would not need a sprinkler head in the alcove, if another sprinkler head was in close proximity.

Strange Observations – Wall Mounted Signs

Continuing in a series of strange things that I have seen while consulting at hospitals…

The discharge door for a stairwell opened out onto the 1st floor corridor, where egress was just down the corridor. (This is permitted by section 7.7.2 of the 2012 LSC, provided they met all of the other requirements).

As the picture indicates, when the stairwell door is fully opened, it sticks out into the corridor about half the width of the door. This can cause a momentary obstruction to people in the corridor when the door is open.

The facilities department thought it would be a good idea to warn people that the door may be a problem when open and created this sign on a swivel that warns people. To be sure, the sign does swing if anyone came into contact with it, but when it is in its normal position, it projected more than 4-inches into the corridor.

Even though the intentions for the sign were good, it does violate the maximum 4-inch corridor projection rule adopted by CMS, and therefore it was written up.


Q: Is there a limit to the size an alcove can be in a smoke compartment right off of the corridor? I understand equipment can be stored in alcoves but is there a definition of an alcove? I have a one hundred square foot room that was once required to be a remote nurse station, but the area is no longer used as a remote nurse station. There is no door to the room and the opening to the corridor is 6 feet wide. Am I allowed to store wheeled equipment (i.e. wheelchairs, patient lifts and crash carts) not in use in this area?

A: Crash carts are permitted to be left unattended in the required width of the corridor, but your question is valid for the other items. Generally speaking in healthcare occupancies, corridors must be separated from all other areas and rooms. But take a look at section of the 2012 Life Safety Code. There are nine (9) exceptions to the LSC requirement that the corridor must be separated from the rest of the facility.

Depending on certain variables, such as sprinkler coverage, smoke detection, size of the open area, etc., you may be able to qualify for one or more of the exceptions. However, you cannot store any combustibles in this room that is open to the corridor. That means no bed storage (because mattresses are combustible) and no supply carts with combustible supplies can be stored in these rooms.

You will have patrol this area often to ensure it is maintained properly. But to answer your question, I have not seen any limitations on size of alcoves in corridors. And one of the exceptions to says spaces unlimited in size may be open to the corridor if you meet all of the requirements.

Corridor Doors Have to Be Fire-Rated?

Q: We have an engineer who is telling us that the 2012 Life Safety Code requires our corridor doors to be fire-rated. He is referencing Table which says exit-access corridor walls that are either 1-hour rated or ½-hour rated require a 20-minute fire-rate door. He says the healthcare occupancy chapter sections and support this as well. Is this true?

A: Well… it appears your engineer is reading the Life Safety Code wrong. When you want to learn what the Life Safety Code requires pertaining to any subject, you start with the occupancy chapter first, not the core chapters (chapters 1 – 11). Section of the 2012 LSC says corridor walls in healthcare occupancies are ½-hour fire-rated and extend from the floor to the deck above. However, in smoke compartments that are protected throughout with approved sprinklers, the corridor walls are permitted to be non-fire-rated, but only resist the passage of smoke and extend from the floor to the ceiling provided the ceiling also resists the passage of smoke.

And according to section, doors in corridor walls in healthcare occupancies are only required to resist the passage of smoke, be 1¾-inches thick, solid bonded, wood core, or made of materials that resists fire for a minimum of 20 minutes. This does not mean the door has to be 20-minute rated… just constructed to resist fire for a minimum of 20-minutes.

According to section, whenever there is a conflict between the occupancy chapters and the core chapters, the information in the occupancy chapter governs. The information your engineer saw in Table is general information and applies to all occupancies. However, the existing healthcare occupancy chapter differs with information in Table, which means the information in the occupancy chapter governs.

I don’t see what you are referring to regarding It does not say doors have to be 20-minute rated. It says doors do not have to be 1¾-inches thick, solid bonded, wood core, and resists fire for 20-minutes for certain areas such as toilets rooms, bathrooms, and shower rooms. It is giving you a break for being an existing healthcare occupancy. In some very old hospitals, they installed doors that were not 1¾-inches thick, and this section is permitting them to remain.

And section is stating what I’ve already mentioned: Corridor walls in smoke compartments that are fully protected with sprinklers are permitted to be non-fire-rated smoke resistant partitions that extend from the floor to the ceiling, provided the ceiling also resists the passage of smoke.

Clean Linen Stored in a Corridor

Q: If I had a hallway (breezeway which connects two healthcare occupancies) which is greater than 8 feet wide (approximately 12ft) and carts of clean linen are being stored on one side of the breezeway for more than 30 minutes, would this be allowed as long as the width is maintained at 8ft or greater?

A: Let’s re-think this situation… You have a breezeway, and you want to store clean linen in this breezeway? Do you see anything wrong with this picture…?

Talk with your Infection Control people. It does not make sense to me to store clean linen in a breezeway. Clean linen must be stored in a clean environment, such as a designated storage room for clean linen. A breezeway is not a clean environment and is not a suitable place to store clean linen.

But… if you’re asking about storing items in the corridor and if it is okay with the Life Safety Code, the answer is…. It depends.

You may store non-combustible items in the corridor as long as the required width of the corridor remains clear. You indicate the required width of the corridor is 8-feet… is that because inpatients would be using this corridor?

However, you cannot store combustible items in the corridor even if they do not obstruct the required width of the corridor. Clean linen is combustible, so therefore, to answer your question: No, you cannot store clean linen in the corridor.

Closet Doors

Q: Are closet doors located inside a corridor considered corridor doors and do they have to meet life and safety codes referring to corridor doors?

A: It depends…. What does your Life Safety drawings say?

Section of the 2012 LSC requires doors in the corridor to be positive latching. If the closet door is in the corridor wall then it must be positive latching. However, there may be a possibility that the corridor wall could run behind the closet, provided the back of the closet wall meets the requirements of for construction of corridor walls.

But your Life Safety drawings need to specifically identify that the corridor wall runs behind the closet. If they do not, then the surveyor has no choice but to hold your closet doors compliant to for positive latching corridor doors.

Smoke Dampers in Corridor Walls?

Q: In regards to suite separations, section of 2012 LSC requires walls separating suites to meet requirements for corridor walls, which have to be constructed to limit transfer of smoke. There don’t seem to be any requirements for smoke dampers in air transfer openings or duct penetrations through corridor walls – is this correct?

A: Well… you’re sort of correct. Corridor walls in fully sprinklered smoke compartments are required to be smoke partitions… not smoke barriers. The 2012 Life Safety Code does not require smoke dampers in HVAC ductwork that penetrate smoke partitions. But section 18/ prohibits the use of air-transfer openings in corridor walls.

Strange Observations – Adjunct Corridor Width

Continuing in a series of strange things that I have seen while consulting at hospitals…

These portable X-ray units were double-parked in the adjunct corridor to the radiology control room.

The adjunct corridor is required to have 44-inches clear width, which is not present between thee two units.


Cabinets in a Corridor – Part 2

Q: Is there a codified requirement for doors in a cabinet mounted in a hospital egress corridor? We have worked on projects when a nurse server; i.e., pass through cabinet, was required by the local AHJ to have positive latching on the cabinet door in order to protect the sanctity of the egress corridor. But when it is just a typical cabinet (non-pass through), is there a danger to the egress corridor if the cabinet doors do not have positive latching?

A: The only code requirements that I can think of are corridor obstruction and projection. A nurse server that has an open pass-through to the patient room from the corridor is required to have a door that meets the requirements of of the 2012 LSC for corridor doors, such as positive latching, 1¾-inch thick solid-bonded wood core, and resisting the passage of smoke, because it needs to separate the corridor from the patient room. I think a typical cabinet that does not have a pass-though would not have to have a door that is positive latching because positive latching is only required when the door is separating a corridor from a room. If there is no pass-through, then there is no need for a positive latching door.

Cabinets in a Corridor – Part 1

Q: It appears that the LSC allows up to 50 square feet of unprotected storage but also includes language that suggests it may need to be protected in accordance with 8.7 depending on the level of hazard. It is my experience that storage in a nurse station (even if combustible) is acceptable because it is located in a normally monitored and occupied area. But what about PPE or patient information storage in closed cabinets away from a nurse station? Would this decision be left to the AHJ?

A: In a scenario as you described, I believe it is all about the cabinet and doors. Is the cabinet mounted in such a way that it projects into the corridor by more than 4 inches? If so, that would be a problem. If the doors to the cabinet were to be left open, would the doors project into the corridor more than 4 inches? If so, that too would be a problem. As long as the square footage of the stored items is less than 50 square feet, I don’t see a problem. The cabinet door would not have to meet the requirements for corridor door (i.e. resist the passage of smoke, positive latching hardware, 1¾-inch thickness, solid bonded wood core) as long as the LS drawings delineated that the corridor wall ran behind the cabinet.