×
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

Flushing an I beam

Flushing an I beam

Flushing an I beam

(OP)
I am in need of some advice.

I had a company move an existing steel beam flush with the joists to add head room in a basement. They "packed" the web of the beam with 2X material and hung the joists from that with joist hangers. They used powder actuated nails and glue to attach the 2X material to the web of the beam, is this acceptable or should they have bolted the wood to the beam? also they did not use top mount hangers they are regular hangers attached only to the packing in the beam

Thanks in advance

RE: Flushing an I beam

This is a common detail but the timber is usually bolted through the steel web. I certainly wouldn't rely on the adhesive to stick to the steel due to the possiblity of corrosion dust or residual oils present from the steel fabrication process. The powder actuated fasteners probably would not have enough shear capacity to transfer the load. It would depend on how many were used I guess but the norm is through bolting. I would definitely recommend that they bolt it which is still relatively easy to do now that it is constructed.

RE: Flushing an I beam

Most of the major suppliers make joist hangers specifically for this application. Check Simpson StrongTie

RE: Flushing an I beam

Jmoin -

The detail you mentioned is not that uncommon. If you are concerned, please have an engineer look into it. He may be able to tell whether the contract has used the right type and number of powder actuated fasteners. Any detail is acceptable as long as a rational approach has been followed to arrive at it (obviously by and engineer).

RE: Flushing an I beam

This is a common detail, but should be thru-bolted as previously mentioned.

As Ron Mentioned, special thicker and weldable top hung hangers are available from Simpson.

Watch out though. Not all of the hangers can be welded - some are too thin or not rated for that type of attachment.

Mike McCann
MMC Engineering
http://mmcengineering.tripod.com

RE: Flushing an I beam

msquared48,
don't see a reason for thru bolted fasteners here, when even paf's have comparable pullout resistance when driven into steel.

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