×
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

Bolting design for Multiply wood beam

Bolting design for Multiply wood beam

Bolting design for Multiply wood beam

(OP)
For thru bolt connection in wood beam, often come across situation for side loaded , multiply beam, either same species or different species.

I know in NDS 11.3.8 that connection for 4 or more ply , each shear plane shall be evaluated as a single shear connection.

In a lot of example, for flitch beam (steel plate sandwiched by wood beam), the transfer of shear using thru bolt can be treated as Double shear.

Say for a (4) ply LVL beam, side loaded, What is the capacity of the bolt shear? Should we look at the first ply as side member and other ply as main member ? or should we take each shear plane as single shear and use the minimum x 3?

RE: Bolting design for Multiply wood beam

Quote (dannyypk)

In a lot of example, for flitch beam (steel plate sandwiched by wood beam), the transfer of shear using thru bolt can be treated as Double shear.

In these situations you're usually delivering the load to the plies either side of the flitch plate and the transferring load from there into the flitch plate. As such, you've got equally loaded wood plies trying to slide vertically past the steel plate and being prevented from doing so by the bolts. Definitely double shear. Let me know if you don't see it.

Quote (dannyypk)

Say for a (4) ply LVL beam, side loaded, What is the capacity of the bolt shear? Should we look at the first ply as side member and other ply as main member ? or should we take each shear plane as single shear and use the minimum x 3?

I think that you look at the first ply as transferring 3/4 of the side applied load to the second ply (side and main memebers identical thickness). That's it.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Bolting design for Multiply wood beam

2nd focuseng's post. Simpson has all the info.

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