Rank: Super forum user 
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I think this is an unusual question, but here goes. I want an internal fire door to be able to open from the one side with a single action, but also able to open from the other side with a key only. Obviously the key locking must be overridden with the single action from the other side.
The reason is that a single room is to be used by a customer who has their own access via the fire escape with an external door ( with a type of device noted above). Others in another part of the offices may also enter this room via a corridor and door, who could also go out the door and fire escape. However if the fire was outside, which is a possibility I would want them all to go the other way. The customer would have a break glass box with a key in it (so only emergencies).
Is there such a lock for internal doors, if so what would it be called? I have trawled the Internet, but none seem quite right. You can get a lock with thumb turn on the one side, but then that would be in addition to a handle /push device, so two operations (and I would prefer a push device on the one side).
Anyone else had to do the same thing, and if so what did you use?
Chris
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Rank: Super forum user 
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Hi Chris,
I have lots of buildings with thumb turn locks on the staff door. It allows the door to be used as a means of escape whilst also securing the building.
I have justified it based on the level of risk. The staff are awake, able bodied, familiar and low in quantity. the buildings are simple (small warehouses with trade counters, admin offices and welfare facilities and not more than 2 storeys). As it is only warehousing there is also a low occupancy risk.
I do however specify that the correct signage is put next to them to demonstrate how to operate the thumbturn.
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Rank: Super forum user
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It is not particularly high occupancy, but there may be people unfamiliar with the building (employees, but not normally there).
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Rank: Super forum user
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Hi Chris,
What are you concerned may happen?
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Rank: Super forum user 
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Rank: Super forum user
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Ok, there is a set of second floor offices, the end office leads to a fire escape stairs external to the building. This end office is going to be converted for a customer to use. We however do not want him to gain entry to the rest of the offices, generally.
We can't completely block up or lock the door as our remaining offices may also need to go through the internal door into the customer office and out. But there is a possibility of fire outside the building at the base of the fire escape. In this scenario the customer would need to go through our offices to use a different escape route.
The idea was that the door could be opened from customer side with a key in a break glass box on the wall. But from our side we just wanted a push pad /bar.
We could have just a push bar and a lock like Mssy highlighted with a thumb turn. However I thought it better if it was just a push bar /plate that operated the lock (one action instead of two). My reasoning was that there may be trainees (our employees) in one of these upper rooms and so would not be familiar with the specific locks. Any fire at the site from the lower level is likely to produce a lot of smoke ( burning oil / plastic / rubber / fuel type items) so visibility may be quickly impaired.
Hence my desire to have a single operation to get out. I have to be honest I always though that a single operation to exit was the correct way.
Hope this helps explain
Chris
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Rank: Super forum user
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Tried to PM you but mailbox full. I may be able to assist.
Regards
SW
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Rank: Super forum user
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SW wrote:Tried to PM you but mailbox full. I may be able to assist.
Regards
SW Thanks, I have made some space so you should be ok to pm me. Chris
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