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Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

(OP)
Looking at TABLE 2-5.2,

b = b_o when b_o <= 1/4in. (6 mm); b = C_b*SQRT(b_o), when b_o > 1/4in. (6 mm)

I'm confused by the units when b_o is > 1/4in, since the resulting effective width is not just in inches but in SQRT(in).

C_b is a unitless factor, so this does not change the output.

What am I missing? If I'm only supposed to take the square root of the value an not the unit, that is not clear (and not typical).

Thanks, Tim

RE: Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

timsch, just consider b in units of length, ignore units for the intermediate steps. No need to make it harder than it is :)

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

(OP)
Well, it gets harder than it needs to be when I code these formulas into a Mathcad spreadsheet and the units don't work out....

And that's after I get over the shakes from thinking of ignoring units. That engineering training on UNITS must have been been pretty effective.

RE: Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

Well, then for your purposes assign units of sqrt(inch) to factor Cb.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: Question on formulas for b, Effective Gasket Seating Width in TABLE 2-5.2

The equation for b is different for metric and imperial units doh!!!

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