Thank you all! So what do the nonmandatory appendices at the end of some of the ASME standards mean? In my original post I had mentioned that an Eng found a statement in B46.1 (App B, first sentenance) and so now argues per that statement that surface roughness should not be called out.
I initially had "SURFACE ROUGHNESS SHALL BE 125 MICROINCHES" because I always thought 'or better' was implied. But I can't find documentation to support that. And Engineers think that if 125 is called out that the part has to meet that at inspection.
Kenat-without the symbol is this note...
Hello,
Does anyone know what the nonmandatory appendices mean at the end of some of the ASME standards? For example, ASME B46.1-2002 has a nonmandatory appendix B. I'm wanting to implement a general note "SURFACE ROUGHNESS SHALL BE 125 MICROINCHES OR BETTER." But someone has discovered this...
That may have been me a year ago :->. I think it was about center marks on every hole on every view. Funny thing...the same guy that gave me a hardtime back then.....is now my manager.
Lisa
%-)I totally agree! I think it is because I'm a female that I'm sometimes not taken seriously when I return prints to Engineers and its covered in red ink. Although, I've been a checker here for the last three years. He is the first to challenge every redline I have made.
Thanks Kenat...I...
PeterStock - how about this sample print attached. Does it add clarity to have all tangent lines shown? Even on 2D views? Where do you draw the line? Who makes the call that the phantom lines stay or go? As a checker, if it is confusing to me....do I tell the Engineer to remove them? He...
thank you all for your advice. I have a stack of drawings all done in a similar fashion (by the same person) with numerous phantom lines in view...some even on 2D views. It is my opinion that it doesn't add clarity, but the engineer is demanding a hard requirement that states that tangent...
Hello,
Is it standard to keep tangent lines shown on isometric views? Please see the sample file attached. For this particular part, it doesn't seem like it adds clarity by keeping the tangent lines. It seems more confusing for me to have them, but that could just be me. I typically prefer...
Thanks all! I generally do not like it when the designers call multiple instances in a detail view if I can't count all occurences. It confuses me. Would you put 8 PL under the detail view or is 8X acceptable? I thought with Y14.5M 1994 PL isn't used.
Lisa
Thank you. But what if a REF similar to my example is called out in a detail view and not all 8 occurences are shown. Would it make sense to callout 8X?
Lisa
Is it acceptable to callout a reference dimension that also identifies number of places? For example:
(8X R.02)
It looks odd to me. I would just like to know if it is considered best practice.
Thanks!
Lisa
This has been very helpful. Thank you all for your input. And yes, I agree...the ultimate goal in the end is consistent, high quality drawings.
Thanks again!
An engineer is challenging me on what I have always considered basic dimensioning rules. He puts center marks on every single hole in every view. I typically only place center marks in views where the feature is dimensioned. The engineer wants me to give him an ASME requirement that mandates...