Avoiding Redundacy
Avoiding Redundacy
(OP)
Can anyone point me to a chapter and verse in any dwg standard (prefereably ASME 14.5) that provides guidance on avoiding redundany in standard dwg practice? i.e. FNs on an assy dwg... If used more than once, the redundancy is noted as a "reference" and this is in the case that it IS needed... What if something is not needed? Such as a view, etc... Is there some sort of general wording that conveys "avoid redundacy to increase clarity and chances for mistakes"?





RE: Avoiding Redundacy
NOTE: A reference dimension is a repeat of a dimension or is
derived from other values shown on the drawing or on related
drawings. It is considered auxiliary information and does not govern
production or inspection operations. See Figs. 1-19 and 1-20.
Where a basic dimension is repeated on a drawing, it need not be
identified as reference. For information on how to indicate a reference
dimension, see para 1.7.6.
Page 8
(c) Each necessary dimension of an end product shall
be shown. No more dimensions than those necessary for
complete definition shall be given. The use of reference
dimensions on a drawing should be minimized.
RE: Avoiding Redundacy
Tunalover
RE: Avoiding Redundacy
"The minimum number of views necessary to describe the part is shown."
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: Avoiding Redundacy
Tunalover
RE: Avoiding Redundacy
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: Avoiding Redundacy
Tuna - I'm pretty sure not dimensioning to hidden line is in one of the stds but off the top of my head I can't remember which.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Avoiding Redundacy
Tunalover
RE: Avoiding Redundacy
It's in Y14.5M-1994, section 1.4(g)
(g) Dimensions should be arranged to provide required
information for optimum readability. Dimensions
should be shown in true profile views and refer
to visible outlines.