Dear Joe,
Thanks for the research. This clears the issue in my mind, so I'll follow
the guidelines you suggest.
Cheers,
Pat Naughtin CAMS
Geelong, Australia
on 2001-02-22 04.07, Joseph B. Reid at [EMAIL PROTECTED] wrote:
> Pat Naughtin asked in ISMA 11173:
>
>> BTW do you know if it is good SI practice to use an SI symbol as part of a
>> sentence as you have here as 'in a ha'. I have always written the unit name
>> in full under these circumstances and reserved the unit symbol to use in
>> conjunction with a number. However, I have no idea why I do this and I can't
>> supply a reference.
>
>
> CAN/CSA-234.1-89 says:
> "3,6,3 When a unit symbol is used to express a quantity, the associated
> numerical value shall be expressed as a numeral. When no numeral is
> involoed, the unit should be spelled out. In tachnical writing, the form
> preferred is the numeral with the unit symbol.
> "Example: The volume of concrete required is 16 m3, or sixteen cubic
> metres.* Concrete is sold by the cubic metre (not by the m3).
> "*The form "16 cubic metres" is not recommended for technical use but may
> be preferable for better communication.*"
>
> NIST Special Publication 811, 1995 Edition, says:
> "7.8 Unacceptability of stand-alone unit symbols
> "Symbols for units are never used without numerical values or
> quantity symbols (they are not abbreviati0ons).
>
> "Examples:
>
> "there are 10^6 mm in 1 km *but not:* there are many mm in a km
>
> "it is sold by the cubic meter *but not* it is sold by the m3"
>
>
>
>
> Joseph B. Reid
> 17 Glebe Road West
> Toronto M5P 1C8 Tel. 416 486-6071
>
