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Questions tagged [unit]

The tag has no usage guidance.

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Why are there so many different values stated for therm to Btu conversion?

Occasionally I worry I've lost my mind, so I Google basic conversions like watts to megawatts, pounds to ounces, etc. Today I fear I really have lost my mind, when Google told me that 1 therm = 99976....
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1answer
105 views

How do you convert “kps” to Pounds per Square Foot (psf)? [closed]

I'm looking at a soil bearing capacity report, which has a column labeled "kips" and the values are followed by "kps". A "kip" is 1000 pounds, but I'm not sure how to convert from "kps" to psf. The ...
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Did the pressure unit “bar” change definitions since the 1930s?

I don't see anything in Wikipedia about it, but (from this question) when I try to reproduce the equations in this 1933 paper, I get values 106 away from the values in the paper. When I reproduce ...
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167 views

How do I denote someone weight

How do I say my weight? In which SI units? I see people are using Kg as a unit of denoting weight from my childhood. Answer this question "What's your weight?".
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1answer
139 views

Darcy to SI permeation units

How can permeation units in Darcy be converted to the SI form. For example, how would 9.0 x 10-6 darcy be converted to SI units of permeation? How would it also be converted to the permeation units: (...
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1answer
38 views

I need clarification on how pressure is measured

I have a vessel that has a pressure measuring device. The value it shows as the pressure inside the vessel is 6 inches of water column. Is inches of water column meant to always be used as gauge ...
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2answers
77 views

Units to use in this formula?

Should standard SI units be used in this formula or are other units supposed to be used for the formula for stress in a thin-walled spherical pressure vessel? $$\sigma_{yield}=\frac{P_g r_i}{2t}$$ ...
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205 views

Definitions of strength?

Can tensile strength be the same as yield strength? Can Flexural Yield Strength be related to the yield strength of a material in any way?
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87 views

What is pros of weight density?

I've been studying mechanical simulation with nastran/patran, nowadays. I knew weight density is used in imperial unit system, instead of mass density. I feel using weight density is tedious, ...