L x W x H units
L x W x H units
(OP)
This seems like the most logical forum to post this question. For a cube that measures 2 inches on each side, which one of the following is what you would write, assuming 8 in^3 isn't an option?
A. 2 in x 2 in x 2 in
B. 2 x 2 x 2 in
C. 2 x 2 x 2 in^3
D. (2 x 2 x 2) in^3
A. 2 in x 2 in x 2 in
B. 2 x 2 x 2 in
C. 2 x 2 x 2 in^3
D. (2 x 2 x 2) in^3





RE: L x W x H units
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: L x W x H units
C & D are redundant.
Chris
SolidWorks 11
ctopher's home
SolidWorks Legion
RE: L x W x H units
If it’s different document, say, catalog including both inch and metric items, then B.
Agree that C and D are too much. Also, as IN is unit of length and IN^3 is unit of volume; if you cannot say 8 IN^3, don’t say (2x2x2) IN^3, it’s just too confusing.
RE: L x W x H units
I tend to use your option B, unless my units are different...
25mm×1.5in×2'-4-1/2"
--
JHG
RE: L x W x H units
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: L x W x H units
Besides which option is clear, I'm wondering which is correct. I don't think B is correct since L x W x H is a volume, but I seem to be outvoted. Let's see if others weigh in ...
RE: L x W x H units
As far as I'm concerned being clear is correct. Being correct and unclear is not.
John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
Mastercam X6
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: L x W x H units
Clear and correct: (2 / 1) + 1 = 3
Clear and incorrect: (2 / 1) + 1 = 1
Unclear and correct: 2 / 1 + 1 = 3
Unclear and incorrect: 2 / 1 + 1 = 1
Everyone, let's forget about drawings and pretend the specification of a 2 x 2 x 2 volume appears, say, in the text of Y14.5 or in an abstract. I think that we can all agree option A is clear and correct but the longest. Disregarding clarity for the moment, which of B and C is technically correct and why not the other? I appreciate all replies.
RE: L x W x H units
If a number has a unit then they belong together.
Consider a torque, say 250 pound -feet.
125 pounds x 2 feet.
B C or D make no sense at all if the units are different, so they make no sense if the units are the same.
RE: L x W x H units
RE: L x W x H units
What are you really after EcoMan? In your OP it sounded like you were referring to a cube and how to specify it on a drawing. That is a relevant question for this forum and some have offered their opinion. Now, somehow volume is an important aspect of what you're asking about.
Y14.5 (Para. 1.5.3) says that units should be indicated on a print so if your print says "DIMENSIONS ARE IN INCHES" either in the note section or in the title block then 2 X 2 X 2 means "two inches by two inches by two inches." Plain and simple. On the other hand, if you are using both mm and inches on the print for some reason, then A is your only option.
John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
Mastercam X6
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: L x W x H units
C is incorrect in that it can be interpreted as 2 x 2 x 8 (only the last digit gets cubed).
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: L x W x H units
Why is B incorrect? The units should all be the same unless you are doing something weird like I was, above.
--
JHG
RE: L x W x H units
John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
Mastercam X6
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: L x W x H units
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV