×
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

Repair for holes drilled in 2x10 floor joists

Repair for holes drilled in 2x10 floor joists

Repair for holes drilled in 2x10 floor joists

(OP)
I am reviewing a repair detail for holes that was drilled through 2x10 wood floor joists, spanning 14', 16"o.c spacing. Hole that was drilled is approximately 4" in diameter and I think at the center of the joist.
The repair detail shows 2"x2" SYP fastened to top and bottom of 2x10 floor joists with screws and construction adhesive.
THoughts?

RE: Repair for holes drilled in 2x10 floor joists

Show photographs of both sides, total span, specific diameter and position (dist from edge, dist from each end) of the hole.

RE: Repair for holes drilled in 2x10 floor joists

Where was the hole drilled along the joist span?

If the hole was at the end, shear is affected - 40 to 45% reduction in capacity.

If the hole was mid span in the center of the joist, then the moment is affected, but not by much. You would have to calculate the new S and I and see the reduction.

I have seen a lot worse...











.

If the hole is at midspan, the moment could be affected, but probably not much.

D

Mike McCann, PE, SE (WA)


RE: Repair for holes drilled in 2x10 floor joists

(OP)
Thank you both for your comments. I will post more information as I find out.

RE: Repair for holes drilled in 2x10 floor joists

Hole at mid-span in centre of joist is likely the best location for the hole.

Dik

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