Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Mixing Bolt Diameters

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Thank you Ivan.  Don't get caught mixing your nuts or bolts on my
projects (and especially not on Ivan's).  I look forward to the day when
I have a client who will pay me for such an analysis.  I have a
difficult time getting the specified bolt material and size installed as
shown on the drawings.

Bill S. Marczewski
BSM Structural, LLC
Astoria, Oregon



-----Original Message-----
From: Ivan Lippi [mailto:ilippi(--nospam--at)dialdata.com.br] 
Sent: Monday, July 14, 2003 12:03 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Mixing Bolt Diameters

Bullshit! Why someone would have to do that?  Mix bolts of different
sizes
in a single connection? Are you "nuts"? or "bolts"?

Ivan Lippi
Structural engineer
----- Original Message -----
From: "Structures Online" <3.sol(--nospam--at)spectranet.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Monday, July 14, 2003 1:39 PM
Subject: Re: Mixing Bolt Diameters


> Carter, Charlie  wrote
>
>  "Mixing bolt diameters in a shear connection would probably not work.
How
>  would the connection know how to send more load to the stronger
bolts?
This
>  same idea would apply to any group of bolts sharing load equally."
>
> Dear Charlie
>
> The connection is a structure too, which deforms in proportion to it's
> stiffness. So, in a connection it is not possible for a smaller dia
bolt
to
> deform more than a larger dia bolt (which it will have to, if equal
loads
> are transferred to both the bolts). So the deformation will be
governed by
> the larger dia bolt, which in turn will be the mechanism thru which
the
> larger load (either shear, or tension/compression, or a mix of both)
will
be
> transferred to the larger dia bolt.
>
> Please note that I am not commenting on any codal provisions,
practicality,
> or feasibility of the situation, but theoretically speaking, there
should
be
> no problem with mixing different dia bolts in a single connection, as
the
> bolts will take loads in proportion to their respective capacities.
>
> With all respect and regards
>
> Pankaj Gupta
> Structures Online
> India
>
>
>
>
> ******* ****** ******* ******** ******* ******* ******* ***
> *   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
> *
> *   This email was sent to you via Structural Engineers
> *   Association of Southern California (SEAOSC) server. To
> *   subscribe (no fee) or UnSubscribe, please go to:
> *
> *   http://www.seaint.org/sealist1.asp
> *
> *   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
> *   send to the list is public domain and may be re-posted
> *   without your permission. Make sure you visit our web
> *   site at: http://www.seaint.org
> ******* ****** ****** ****** ******* ****** ****** ********
>



******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ******** 


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org 
******* ****** ****** ****** ******* ****** ****** ********