×
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

Horn/Strobe placement according to code

Horn/Strobe placement according to code

Horn/Strobe placement according to code

(OP)
Code states that Horn/Strobes in hallways cannot be more than 100 feet apart yet the cd ratings normally only go 25 feet out each side or 50 feet forward. If you mounted them facing each other it would be 100 feet but in a hallway is it true they need to be 15 feet from the end of the corridor? From the placement according to the cd it seems to contradict the NFPA 72-59 (2002) 7.5.4.2.5  To desgin a system correctly the norm is about 50 feet apart depending on the room configuation or hallway configuation. The cd rating also will affect this but even a 110 cd light distribution would not be effective with these calculations.

RE: Horn/Strobe placement according to code

(OP)
After reviewing NFPA 72 (2002) on page 59   7.5.4.2.5 I see that you can be up to 100 feet apart in corridors and that the cd requirments for rooms are different.

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