Interrupted coplaner surfaces 1

[mkcski]

Regarding two or more interrupted, coplanar surfaces like in figure 8-15 – see attached: My understanding over the years is that the extension lines between the four surfaces do not “connect” them. This is consistent with figure 8-15 where datums A and B are shown to single-out two of the four features as datums. Para 8.4.1.1 defines how to make them coplanar. This assumes they are NOT to be interpreted as “connected”(in which case they would be coplanar by default). But where in Y14.5 does is state that extension lines are NOT to be interpreted a creating a single uninterrupted surface. And more specifically: where does Y14.5 state extension lines between interrupted surfaces are NOT to be interpreted as a creating single datum feature when a datum symbol is applied.

The Continuous Feature concept symbol <CF> alludes to this but does not answer my question.

Did I miss something in basic print reading class?

Certified Sr. GD&T Professional

 

[greenimi]

2.7.5 "When using the continuous feature symbol, extension lines between the features may be shown or omitted;
however, extension lines by themselves do not indicate a continuous feature."

 

[mkcski]

Thanks VERY much. I have a RED face. I was searching for "interrupted" and not continuous.

Certified Sr. GD&T Professional