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Zman
Member Posts: **5,753**

I am doing some light reading in the 2018 IECC https://codes.iccsafe.org/content/IECC2018P3/chapter-4-re-residential-energy-efficiency

Does anyone know what this part of Table 405.5.2(1) means?

I keep coming up with millions of Btu/day for a 1,000 square foot home. That can't be right...

Does anyone know what this part of Table 405.5.2(1) means?

I keep coming up with millions of Btu/day for a 1,000 square foot home. That can't be right...

"If you can't explain it simply, you don't understand it well enough"

Albert Einstein

Albert Einstein

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## Comments

4,115=17900 + (23.8 x 1000) + (4104 x 3)

=17900 + 23800 + 12312

=54012

6,94712,721Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.

Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch

5,753I guess you need to go to the IMC before they will trust you with 8th grade algebra order of operations

Albert Einstein

4,115It’s actually correct the way it’s written. When no parenthesis are written, order of operations are the rule.

Just think of a formula with no parenthesis like:

π r^2

You would square the radius before multiplying π.

22Unlike some fresh-outta-school engineers I have met.

Building a house in NH

1,074Rick

5,753Albert Einstein

4,1152,353