What line of work are you in?  If it is architectural and construction based then you want to take a look at the U.S. National CAD Standard V6.

https://www.nationalcadstandard.org/ncs6/

Here is a link to the standards used at the Argonne National Lab....

http://www.aps.anl.gov/APS_Engineering_Support_Division/Design_and_Drafting/DDStandards/DDStandards.html

Here is another link to the engineering drawing standards as set forth by the Moraine Valley Community College which references ANSI standards....

http://facultyweb.kennesaw.edu/gconrey/documents/CADdeptStandards.pdf

Engineering drawing standards for NASA...

http://mickpeterson.org/2014design/Info/Drawings/NASA%20GSFC-X-673-64-1F.pdf

Seek and ye shall find.


Edited by John Connor - 13.Dec.2016 at 12:32