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

RE: Metric Steel Shapes

[Subject Prev][Subject Next][Thread Prev][Thread Next]
My understanding has always been that "pounds" is a force (weight)
measurement and its metric equivalent is Newtons.  The mass units for the
Imperial (English) system is "slugs".

Scott Maxwell, PE, SE

On Wed, 12 Jul 2000, Peter McCormack wrote:

> Why change mass to force (kg to N) to convert back to 
> mass??????
> 
> Unless I missed something all these years, lb/ft of the beam is 
> mass per foot length...not pound force per foot......
> 
> (I am really starting to miss the metric system.....sob...sob...)
> 
> Peter McCormack
> 
> From:           	"Connor, John A NWK" <John.A.Connor(--nospam--at)nwk02.usace.army.mil>
> To:             	"'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
> Subject:        	RE: Metric Steel Shapes
> Date sent:      	Wed, 12 Jul 2000 09:28:49 -0700
> Send reply to:  	seaint(--nospam--at)seaint.org
> Organization:   	http://www.seaint.org
> 
> > Reference: AISC, LRFD, Metric, Vol I
> > S100x11.5=S4x7.7 
> > 
> > multiply kg/m (mass/length) by gravity (9.81 m/s^2)
> > this changes kg/m (mass/length) to N/m (force/length)
> > covert N/m (force/length) to lbf/ft (force/length) by multiplying by 1/14.59
> > (conversion table back of AISC manual)
> > 11.5 * 9.81*1/14.59=7.7
> > 
> > Alcohol and Math do not mix.
> > Don't Drink and Derive.  :)
> > 
> > Cheers,
> > JC, PE
> > 
> > -----Original Message-----
> > From: Bill Polhemus [mailto:bpolhem(--nospam--at)swbell.net]
> > Sent: Wednesday, July 12, 2000 10:10 AM
> > To: seaint(--nospam--at)seaint.org
> > Subject: Re: Metric Steel Shapes
> > 
> > 
> > 1) Where did the "11" come from? What does it signify?
> > 
> > 2) Where did you find the information?
> > 
> > Thanks.
> > 
> > > "Connor, John A NWK" wrote:
> > > 
> > > S100x11 (metric) is equivalent to S4x7.7 (Imperial).
> > 
> 
> 
> 
> ******* ****** ******* ******** ******* ******* ******* *** 
> *   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) 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 
> ******* ****** ****** ****** ******* ****** ****** ********
> 


******* ****** ******* ******** ******* ******* ******* *** 
*   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) 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 
******* ****** ****** ****** ******* ****** ****** ********