Need a book? Engineering books recommendations...

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

Re: Leveling Nuts

[Subject Prev][Subject Next][Thread Prev][Thread Next]
According to the commentary of AASHTO's standard for
highway signs, luminares, and traffic signals (4th

"Compressive load from the base plate should be
supported directly by the leveling nuts.  Fuchs et al
indicates that in practice, many base plates are
placed on a grout bed...a grout failure may occur
before any other type of failure."

The implication seems to be that at ultimate, the
bolts end of taking most of the load least
for this type of structure and loading.

Perhaps also of interest...

"The bolt stress may be calculated using the equation
N/A + Mc/I where A and I are properties of the bolt
group.  Experimental work (Kaczinski et al) indicated
that this procedure is valid provided that the clear
distance between the bottom of the leveling nut and
top of foundation is less than one bolt diameter."

It would be interesting to know what sorts of
configurations they studied.

d a v e e v a n s

Yahoo! for Good 
Donate to the Hurricane Katrina relief effort. 

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) 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: 
******* ****** ****** ****** ******* ****** ****** ********