When I worked for the Canadian Institute of Steel Construction, we were always having to convert US information to metric, and ksi was a very common unit. And very occasionally the CISC engineers had to work in ksi (it was used in Canada also until it converted - doubtless there are still many Canadian structural engineers who still do use it).
I'm sure that AISC (American Institute of Steel Construction) will be able to provide any information needed on the use of ksi. Regards John F-L ----- Original Message ----- From: Bill Potts To: U.S. Metric Association Sent: Wednesday, July 15, 2009 7:39 AM Subject: [USMA:45369] Strange Unit I just came across a unit I've never seen before: ksi. It stands for kilopounds force per square inch and is used as a stress measurement (especially for metals). It turns out that 1 ksi equals about 6.9 MPa (or, more roughly, 7 MPa). Is anyone familiar with this, and in particular, how widespread its use might be? It's of interest to me, because I'm about to propose on a contract to create a Web site for a company that is very closely associated with another company that uses ksi (and only ksi) on its own site. Bill ------------------------------------------------------------------------------ Bill Potts WFP Consulting Roseville, CA http://metric1.org [SI Navigator]
