×
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

Sprinklers under underside of OPEN stair run??

Sprinklers under underside of OPEN stair run??

Sprinklers under underside of OPEN stair run??

(OP)
I was wondering what kind of protection is needed for the underside of the stairway (attached) if any? The stair run is 4'=6" wide.

Thanks

RE: Sprinklers under underside of OPEN stair run??

Normally see run down the slope of the escalator

Spaced to cover area under the escalator

Do you also have to provide opening protection ???

RE: Sprinklers under underside of OPEN stair run??

(OP)
I saw that post and is helpful for the Vertical Opening aspect. However, I am still trying to determine if any protection is needed on the UNDERSIDE of the stair way since it is not enclosed.

The first stair landing is at ~6'-10" while the top of the stair will hit the next level at 16'-0"

Here are some pictures i found on google:
http://www.aw-systems.com/images/gallery/mezzanine...
http://cpluscdesign.com/gastography/wp-content/upl...

thanks.

RE: Sprinklers under underside of OPEN stair run??

Yes required obstruction of overhead sprinklers
Over four feet wide

RE: Sprinklers under underside of OPEN stair run??

8.5.5.3* Obstructions that Prevent Sprinkler Discharge from Reaching Hazard. Continuous or noncontinuous obstructions that interrupt the water discharge in a horizontal plane more than 18 in. (457 mm) below the sprinkler deflector in a manner to limit the distribution from reaching the protected hazard shall comply with 8.5.5.3.


8.5.5.3.1* Sprinklers shall be installed under fixed obstructions over 4 ft (1.2 m) wide.

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