Ok. We have all seen this. A print with a centerline call out that really only controls size and not location. Think of this as solid block with a U shape cut thru it. The entire U shape is severely tipped to 1 side. We almost have a this wall condition on side. The U itself has perfect size and form. . We are getting push back from another dept saying according to the print it is good to go! There is a note saying all undefined geometry is controlled at +/- .010 on the print and we also use an internal control that states +/-.10 on all undefined dimensions. This dept has never heard of that document for some reason. So I would say the shape itself needs to be within .010 of the C/L. Can everyone out there quote a standard that talks about undefined symmetry ? Y14.5 has nothing ( and I didn't expect it to ) . The drawing isn't referencing any other specs and it is an internal drawing so this is more of a dept vs. dept P!$$!NG match. I would like to win this war with a MOAB !
It's says right there in 2.3 Limits of size. feature of size is ONE CYLINDRICAL or SPHERICAL, or a SET OF TWO OPPOSED PARALLEL SURFACES. 2.2 explains with Datum Control, you have no Datums or starting points. So you have 0-Diminsional, POINT(SPHERE). 1D, LINE(CYLINDER). or 2D, PLANE. One Feature +/-.010. They go on to explain it as an envelope.
I'm sorry you do have Datum control, still doesn't change the definition of feature of size, the only thing it will change is location.
It's says right there in 2.3 Limits of size. feature of size is ONE CYLINDRICAL or SPHERICAL, or a SET OF TWO OPPOSED PARALLEL SURFACES. 2.2 explains with Datum Control, you have no Datums or starting points. So you have 0-Diminsional, POINT(SPHERE). 1D, LINE(CYLINDER). or 2D, PLANE. One Feature +/-.010. They go on to explain it as an envelope.
I'm sorry you do have Datum control, still doesn't change the definition of feature of size, the only thing it will change is location.
