Re: OT - Tyre Sizes - Was Re: Database Design Question - any suggestion?

Jonathan Leffler <jleffler_at_earthlink.net> wrote:

>Bernard Peek wrote:
>
>> In message <18c7b3c2.0412051704.7e144ecb_at_posting.google.com>, --CELKO--
>> <jcelko212_at_earthlink.net> writes
>>> Design a vector code. Ever see the ISO tire (tyre) sizes? They are a
>>> three part vector code: <width in cm><material><diameter in inches>,
>>> so you can have a 155SR15 tire that we know is a steel belted radial
>>> tire mesuring 155 centimeters wide on a 15" rim.

>If I'm reading the attributions correctly, Joe Celko wrote the comment
>about tyres (sorry, tires - this was in the USA) that are over 1 metre
>(sorry, meter - it's still the USA) wide? And I don't think it was
>written in Texas.

     In the Alberta tar sands, there are trucks with tires about twenty feet in diameter.

>I assumed there was an implicit decimal point and the width was 15.5
>cm, or 155 mm. The mix of imperial and metric units still amuses me,
>like a 4 ft by 8ft sheet of 23 mm plywood does. Don't Mars Landers
>crash when you get the units confused - or was that Ariane?

     The lander. The Ariane-5 incident was because of unhandled overflow.

Sincerely,

Gene Wirchenko

Computerese Irregular Verb Conjugation:

     I have preferences.
     You have biases.
     He/She has prejudices.