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imayearin 11-14-2012 07:45 PM

Needing to calculate how much water I should account for to drain 40' of 2" pipe, I haven't found a formula yet. There are no cutoffs between cold water/steam units that have bad valves. This "house" is a nightmare lol 8)

Trying to replace valves that failed and were bypassed, designated cold water pumps are fed from heat exchangers, three pipe to four pipe...omg I'm too green for this!!!

oh'mike 11-14-2012 08:07 PM

What we need is a math genius-----flying guess? About 3 buckets full----let's see that a mathematician has to say---

Canucker 11-14-2012 08:15 PM

A little over 6.5 gallons

imayearin 11-14-2012 08:36 PM

I'd take an evilt genius with a floating cork at this point

imayearin 11-14-2012 08:37 PM

Thanks canucker, do you have the formula handy?

jaydevries 11-14-2012 08:43 PM

there is 231 cubic inches in a gallon

TheBobmanNH 11-14-2012 08:43 PM

Volume of a cylinder is pi*r(squared) * height (or, in this case, length).

So, for a 2" diameter pipe, the volume would be 3.14 * 1 * 480 = 1507 cubic inches = 6.5 gallons.

For unit conversion, Google is your friend. Just google "1507 cubic inches in gallons" and it'll spit out an answer.

jaydevries 11-14-2012 08:45 PM

volume of a sphere is pi (3.14) r squared times height or length

imayearin 11-14-2012 08:58 PM

My phone shows no posts by me, but I appreciate everyone!!!!

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