×
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

Utility Penetration Through Precast Double Tee Deck

Utility Penetration Through Precast Double Tee Deck

Utility Penetration Through Precast Double Tee Deck

(OP)
I am locating a utility penetration in a school for a contractor who will core a 4" to 6" diameter hole through a double tee (8DT24) roof deck for a 4" dryer exhaust. I see various other similar and larger penetrations in the deck but I would like to see if there is any scientific method to properly placing them or if it is standard practice to use a sensor to avoid cutting deck reinforcement. I have chosen a spot at the middle of the deck span between the stems. I believe that only mild reinforcement should be encountered in the deck and that the pre-stressed tendons are in the stem.
Thanks in advance.

RE: Utility Penetration Through Precast Double Tee Deck

4" to 6" is rather inconsequential for the slab portion of the double tee. And you are correct about the PS steel being in the stems. You should be OK of you stay 6" or so from the upper edge of the double tee section.

Mike McCann
MMC Engineering

RE: Utility Penetration Through Precast Double Tee Deck

Agree with Mike..I don't get excited about penetrations until they exceed 12"

RE: Utility Penetration Through Precast Double Tee Deck

Warn the contractor of the obvious. I once had the contractor call and ask why if the flange was only 2.75" thick was his core driller still in concrete after 16 inches....

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