It might be interesting to note that when the NYSDOT converted to metric we did not want to use soft conversions for pipe sizes for waterline, gas line etc. We use a NPS designation known as Nominal Pipe Size. For example, we will tell the Contractor to install a 6 NPS water line which in reality is a 6" waterline. Storm sewers are all given in hard metric but I am not sure what the industry is producing, I would guess in some cases its hard metric, in others its a soft conversion and we end up with a nominal pipe size (ie. a 300 mm concrete pipe is really 305 mm.
Howard Ressel Project Design Engineer, Region 4 (585) 272-3372 >>> "Michael Payne" <[EMAIL PROTECTED]> 09/16/03 11:06AM >>> It might surprise you to know that the common copper plumbing pipe sold in the US is actually hard metric, cannot remember exactly, I think the 1/2" is 15 mm and the 3/4" is 22 mm, it's just called inch size for the benefit of Americans, no idea when it happened, but it's definitely hard metric. Michael Payne > [Original Message] > From: John S. Ward <[EMAIL PROTECTED]> > To: U.S. Metric Association <[EMAIL PROTECTED]> > Date: 16/9/03 00:04:09 > Subject: [USMA:26981] To what extent will the U.S. go metric? (Was A4 paper size...) > > > What about pipes, valves, hydraulics, and building materials? This one is > hard to say. For example, plumbers will be repairing and maintaining > existing systems for about a century, so a full set of inches parts will be > available. I predict that plumbing will not convert to hard-metric, although > I hope I'm wrong. > > > John > > Le Lundi 15 Septembre 2003 19:45, Michael Payne a �crit : > > I've lived in a number of countries, from memory both Kenya and South > > Africa are exclusively A4 paper countries as are probably all countries in > > Africa with the close connection all had with Europe. I've also lived in > > the Middle East (UAE) where they use A4 and A3 size paper. Here in the US > > many hotels seem to use neither Letter nor Legal size for bills, obviously > > getting specially cut paper to their own size. Bell Atlantic (now Verizon) > > used to use many sheets of very small paper, now they use some larger > > proprietary size, still smaller than letter size, much to my annoyance. > > I've found many companies in the US come out with odd paper sizes, which I > > normally get as a bill or statement. I'm going to have to measure some and > > see exactly how big they are. > > > > Michael Payne > > > > > [Original Message] > > > From: John S. Ward <[EMAIL PROTECTED]> > > > To: U.S. Metric Association <[EMAIL PROTECTED]> > > > > > > Date: 11/9/03 23:08:17 > > > > > > Subject: [USMA:26955] A4 paper outside of Europe & Australia? > > > > > > Hi, > > > > > > I've already gathered that A4 paper is ubiquitous in Europe and > > > > Australia, and > > > > > that "letter" is the standard in North America. > > > > > > Would those few folks on this list who are NOT from Europe, North > > > > America, or > > > > > Australia tell me if the ISO A series paper sizes (e.g., A4) are standard > > > > in > > > > > your countries? India? South America? Asia? Africa? Middle East? > > > > > > Thanks, > > > > > > John > > > > --- Michael Payne > > --- [EMAIL PROTECTED] > > --- EarthLink: The #1 provider of the Real Internet. --- Michael Payne --- [EMAIL PROTECTED] --- EarthLink: The #1 provider of the Real Internet.
