On Tue, 12 Jun 2007 21:01:56 -0500, someone wrote:


v would probably suggest a 3-ton unit in that example. rolleyes

The contractor can't "cut corners on the formula" because he likely
doesn't have and doesn't know the formula anyway. He just punches the
numbers in to something that he bought and then tries to impress you
with the resultant printout.

I used to do these "by hand" (okay, pocket calculator) back in the
day. Don't confuse precision with accuracy. Garbage in garbage out.
You are better off with someone who can make a reasoned estimate here
and there, than with someone who laboriously inputs precise fractions
but uses the wrong conditions and assumptions because he is just doing
data entry and not understanding principles.





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