What is a door that opens freely from the inside of a building but
automatically locks up when someone from the outside of the buiding
tries to open it?

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Clarification of Question by sn1022-ga on 15 Nov 2006 13:08 PST

What is the name of the type of door?

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Request for Question Clarification by tutuzdad-ga on 15 Nov 2006 13:27 PST

Seriously (notwithstanding my comment below), many kinds of doors are
capable of the configuration you described. Very broadly however,
these are often called "Access-controlled egress doors" (a fancy name
for "a one-way exit") whether the control is requires the use of a
security card, PIN number, single-motion egress button or by virtue of
a simple hardware feature like a one-way locking device simmilar to
the one you described.

Is that the type of name your are after?

tutuzdad-ga

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Clarification of Question by sn1022-ga on 15 Nov 2006 18:01 PST

a one way locking device is what I'm looking for - kind of what your
old high school may have had. A simple door that you were able to walk
out of but could not reopen once you were outside.

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Request for Question Clarification by pafalafa-ga on 15 Nov 2006 18:09 PST

Are you asking about a push-bar door?


http://www.dovetailcarpentry.co.uk/images/prime-images/push-bar-door-1.jpg

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Request for Question Clarification by tutuzdad-ga on 15 Nov 2006 19:24 PST

Thank you for clarifying your question for me. Forgive me for
suggesting that you don't know the difference, but in the security
industry the term "egress" means "exit" and "access" means "entry". An
"access controlled egress door" is one that limits entry but allows
people to exit.

The "push-bar door" mentioned by my colleague is technically known as
a "single motion egress door". This is a security feature that allows
one to open the door with a single motion like pushing on a bar or
button. Not all "push bar doors" can be configured to lock
automatically to outsiders though. "Access-controlled egress doors"
can. So yes, I believe what you are asking about is called an
"Access-controlled egress door".

Is this sufficient?

tutuzdad-ga

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Clarification of Question by sn1022-ga on 16 Nov 2006 10:20 PST

Thats fine. Thank you/.

Dear sn1022-ga;

Thank you for allowing me to answer your interesting question. In an
effort to officially close your question I am basically reiterating
what we discussed earlier:

An access controlled egress door is a door that limits or prohibits
entry while allowing someone to exit from the inside without
hindrance. You will find descriptions of various types of access
controlled egress doors with auto-lock mechanisms from these sources:

OSHA
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=24750

Highlights of NFPA 101
The Life Safety Code - 1997 Regarding Doors, Frames, & Hardware
http://www.lilocksmith.com/laws_codes/nfpa101.htm

Access Control Systems [NFPA 101-2000]
http://www.ercweb.com/resources/viewreg.aspx?id=6875

I hope you find that my answer exceeds your expectations. If you have
any questions about my research please post a clarification request
prior to rating the answer. Otherwise I welcome your rating and your
final comments and I look forward to working with you again in the
near future. Thank you for bringing your question to us.

Best regards;
Tutuzdad-ga ? Google Answers Researcher



INFORMATION SOURCES

Defined above


SEARCH STRATEGY


SEARCH ENGINE USED:

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SEARCH TERMS USED:

ACCESS CONTROLLED EGRESS DOOR(S)

An exit?

One name for it is a panic door.

I learn something every day here:  "Access-controlled egress door".

Something poetic about that:

An access controlled egress door
   between my dream girl and me,
 . . .

I'm sorry about that - I didn't know I had to rate your answer for the
ticket to become of status "CLOSED". I thought it "closed"
automatically when you answered it. Thanks!