×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Manual Pull Station requirements within 240ft. Aircraft Hangar Door

Manual Pull Station requirements within 240ft. Aircraft Hangar Door

Manual Pull Station requirements within 240ft. Aircraft Hangar Door

(OP)
A local AHJ on an aircraft hangar project that my firm is working on is requesting the addition of fire alarm manual pull stations at the man doors within a 240ft.long aircraft hangar door. Keep in mind the 240ft.long hangar door is operable so a hard wired connection would not be optimum. Has anyone ran into this dilema before and how was it rectified, any help would be greatly appreciated. Thanks :)

RE: Manual Pull Station requirements within 240ft. Aircraft Hangar Door


Whoa. now that is interesting.   I'm picturing a bunched cable, like you would see on a powered monorail; with a track for the wheels that hold the top of each "loop" of the cable bunch.  Door lowers, drags out the slack of the cable. door raises, pushes the cables back up.
  
It could be done as simply as using a residential garage door track.


 

RE: Manual Pull Station requirements within 240ft. Aircraft Hangar Door

Why does it have pulls to begin with???

What fire code are they under ??

Do they have a code / standard section to reference requirement??  Any other hangers on property with pulls in the door???    Where dothey want the a/vs???

Did they do plan review or is this a plan review question???

 

RE: Manual Pull Station requirements within 240ft. Aircraft Hangar Door

(OP)
Why does it have pulls to begin with???

REQUIRED BY NFPA 72 AND NFPA 101

What fire code are they under ??

NFPA 72, NFPA 101, UFC 4-211-01N Aircraft Maintenance Hangars: Type I, Type II and Type III

Do they have a code / standard section to reference requirement??

NFPA 101 SECTION 9.6.2.4
  
Any other hangers on property with pulls in the door? TBD

Where do they want the a/vs???

NOT REQUESTING THEM TO BE MOUNTED WITHIN 240FT. LONG HANGAR DOOR, WALL MTD. DEVICES WITHIN SPACE ARE SUFFICIENT.

Did they do plan review or is this a plan review question???

NO THIS PROJECT IS IN CONSTRUCTION, THIS REQUEST CAME FROM THE FIRE CODE OFFICIAL INSPECTION.

RE: Manual Pull Station requirements within 240ft. Aircraft Hangar Door

You forgot,
UFC 3-600-01 Fire Protection Engineering for Facilities
Architectural Barriers Act (ABA)
Uniform Federal Accessibility Standard (UFAS)*
  *a new addition

I am not sure if there is anything within ABA or UFAS that trumps NFPA 101 for manual pulls.. Probably not.

You need to point him to section 42.3.4.2 of NFPA 101.  It is the ACTUAL governing requirements for a building designated as storage occupancy, and does not require manual pulls where there is an approved NFPA 13 compliant sprinkler system, which no doubt you have..  In that case NFPA 101 only requires the one manual pull (for when the sprinklers are out of service).

If the hanger is designated as something other than storage, just go to the X.3.4 section of that occupancy chapter, there will be similiar wording.

AFB inspectors are usually pretty sharp, but I'm sure its just the luck of the draw..

RE: Manual Pull Station requirements within 240ft. Aircraft Hangar Door

Just an after thought.. is this "pull station" by any chance really an actuation switch (yellow and marked foam) that is going to be used to actuate a foam system?

In that case NFPA 409 7.7.4 could rule, because it requires it to be "located in the normal paths of exit from the area"
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources