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Old 02-13-2015, 04:47 PM   #41
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Originally Posted by Midpack View Post
How? I assume we're talking cutting one board in half, my math says you end up with the same total board feet (even ignoring kerf).
Easy based upon how board feet are calulated in NHLA rules for rough sawn lumber. It's just rounding. We're going to cutting this board in half lengthwise, proper pratice gives a couple of inches to play with.

The simple calcution for 4/4 or 1" lumber is length in feet x width (measued to 1/8 inch) this gives you units(1"x12 ") then divide by 12 to turn into board footage. The trick is a board foot in non dimensional lumber is rounded to the nearest board foot.

So a board 8 foot long by 4 3/4 inches wide is 38 units(1"x12"). Divide by 12 that equals 3 and 1/6 board feet. That rounds down to 3 board feet.
If it's 1 board 4 foot long by 4 3/4 inches wide is 19 units(1"x12"), divide by 12 is 1 7/12 units, that gets rounded up to two board feet. Then add in the second piece you now have a rounded up to 4 board feet. It's the exact same area that's being measured, rounding messes it up from how we logically think.

Don't know if the same rules apply to dimensional lumber. Even if they do I can't think of an existing dimension piece that would have the issue.

I also can't say how lumber yards do it after it's been planed and ready for retail, I'm describing how it's sold.

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Old 02-13-2015, 06:31 PM   #42
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I didn't realize lumber yards rounded to the nearest foot, I learned something, thanks.

No one agrees with other people's opinions; they merely agree with their own opinions -- expressed by somebody else. Sydney Tremayne
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Old 02-13-2015, 09:08 PM   #43
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Originally Posted by imoldernu View Post
How many ounces in1.75 liters?
I knew this one, but I killed those particular brain cells before I finished the bottle.
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Old 02-13-2015, 10:11 PM   #44
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I've seen 'measure lines', e.g. pint, half pint, on glasses. IIRC such lines are required in England. Graphics on packaging could give an easy indication of stealth inflation. Require manufactures to use a bar or pie graph showing the percentage of a "standard measure", e.g., for comparing to a gallon, if the contents were a gallon the pie graph would be 100% filled in, if the contents were 92% of a gallon, the pie would have 92% filled in. Or the same info could be included in the QR code.

It wouldn't surprise me if the disabilities act could be interpreted to require this.

Defining what 'standard measures' are acceptable would open a hornets nest.
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Old 02-14-2015, 08:57 AM   #45
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I learned about paint unexpectedly as well. Nice plus for this little school teacher.

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