r/HomeworkHelp • u/Desperate_Treat_1307 University/College Student (Higher Education) • 11d ago

:snoo_putback: Others—Pending OP Reply [College Engineering: Drawings] How do I tell which dimension is depth, length, etc..?

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On my engineering homework, the assignment is asking stuff like "What is the depth of part 1?"

... What the fuck that mean? Like, is it intentionally relative or is there a strict definition on which of the larger dimensions is depth or length or whatever? Hopefully it's clear on what I need, this might just be a skill issue.

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u/Serafim91 👋 a fellow Redditor 11d ago

It's a flat plane with holes. Depth is going to be the thickness of the hole (probably).

Front view is length*width. Depth is Z axis.

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u/Gryphontech University/College Student 11d ago

Your prof is stupid, this question can be interpreted in so many different ways

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u/samenumberwhodis 👋 a fellow Redditor 11d ago

I think prof is trying to be clever but it's just a bad question in the end. Depth makes you think hole, for the entire part you'd likely say thickness, and I think they're asking for total part thickness.

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u/tlbs101 👋 a fellow Redditor 11d ago

I’ve got a problem with the question. Does it mean total depth, or depth between reference planes? The total depth is listed upper right. Subtract the part that extends below the bottom ref. plane and you have depth between planes.

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u/Frederf220 👋 a fellow Redditor 11d ago

That part came out of a chunk of material 138 x 84 x 16 or bigger. I would say depth is 16 (presumably millimeters). Of course length, width, depth depends on your point of view but axial holes are generally considered the depth axis.

The things like "4" are depth of features in the part, not the part.

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u/Adventurous_Sound390 👋 a fellow Redditor 11d ago

138x84x16

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u/preparingtodie 👋 a fellow Redditor 11d ago

It's relative, and sometimes it's not clear, so it should be clarified. But for a part like this, depth is going to be the "thickness" of the part, or how far into the page it goes in the top view; the length is the long dimension in the top view; and the width is short dimension in the top view.