My understanding of "turn-of-the-nut method" is one of a number of methods
to achieve a particular pretenstion in the bolt. Also, the turn of the nut
method requires "calibration" using a device such as a Skidmore-Wilhelm Bolt
Tension Calibrator. This basically equates the turn-of-the nut with a
given pretension force..... I would think it would add considerable expense
to the job..... unless you need specific pretensioned connections go with
"snug - tight"....
Robert C. Rogers, PE
From: Ron Hill [ <mailto:ronhill(--nospam--at)hillce.com> mailto:ronhill(--nospam--at)hillce.com]
Sent: Friday, January 19, 2001 1:19 PM
To: Seaint@Seaint. Org
Subject: Bolt Tightening
I recall from AISC edition 7 that the preferred method of tightening
structural bolts for bearing connections was the turn-of-nut method.
Looking at ASD and LRFD current editions, the method for bearing connections
is called snug tight. I prefer the turn-of-nut method and wonder if this
requirement is an undue expense for the erector. Does anyone have a feel
for the cost difference????
Ron Hill, P.E.
HILL Consulting Engineering
Birmingham, Alabama USA
* This email was sent to you via Structural Engineers
* Association of Southern California (SEAOSC) server. To
* subscribe (no fee) to the list, send email to
* admin(--nospam--at)seaint.org and in the body of the message type
* "join seaint" (no quotes). To Unsubscribe, send email
* to admin(--nospam--at)seaint.org and in the body of the message
* type "leave seaint" (no quotes). For questions, send
* email 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> http://www.seaint.org