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!

*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.

Jobs

Combining Nail and Bolt Strengths

Combining Nail and Bolt Strengths

(OP)
Does anyone know of any information for combining different fastener strengths. Such as nails with bolts or any other combination for that matter?

EIT
www.HowToEngineer.com

RE: Combining Nail and Bolt Strengths

I would think for wood it would be relatively additive. I would be providing the largest spacing between the unlike fasteners (likely governed by bolts).

RE: Combining Nail and Bolt Strengths

By CWC they are additive. The controlling failure for nails in anything softer than D.F. is usually lateral deformation of the nail, while in bolts it is usually yielding of the wood itself.

I would think a prudent design would to find the maximum capacity of your nails first, and then size an appropriate bolting connection to take up the rest as the nails will usually fail first.

RE: Combining Nail and Bolt Strengths

(OP)
Thanks for the info, and yes wood connections.

EIT
www.HowToEngineer.com

RE: Combining Nail and Bolt Strengths

(OP)
Is there a section reference for the CWC that you might be able to provide?

EIT
www.HowToEngineer.com

RE: Combining Nail and Bolt Strengths

I'm living up to this one... I may have lied - I was thinking of a Simpson whitepaper on multiple fasteners but it was not CWC or CSA approved - truly sorry about that. Will fact check more thoroughly before I post in the future.

OS86 - 10.2.2.3.1 & 10.2.2.3.2: "... fastenings of the same type and size arranged symmetrically..."

RE: Combining Nail and Bolt Strengths

I would not use both unless the bolts could be installed first, then loaded to take up the hole slop, then the nails installed. (Like that's going to happen). Otherwise the nails could take all the load until they fail if there is too much play in the bolt holes.

Mike McCann, PE, SE (WA)


RE: Combining Nail and Bolt Strengths

(OP)
@Signious - no worries.

@msquared - Good points.

This is evaluating an existing condition that has been there for a long while. If designing new I would not combine them. For my situation even combining the nails and bolts did not meet the required strength, so I will need to reinforce the connection ("but at has stood for years!" they will shout I'm sure). I was curious for future reference.

EIT
www.HowToEngineer.com

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close