Helpful? 0

V-factor

I hope this is not a dumb question...but what exactly is the V-factor in the 2009 IECC. I shows up several times in Section 4 for example, Sec 402.1 .3 V-Factor Alternative. I think it is the same as the U-factor....but why are they referring to it as V-Factor.

Thanks....

Asked by Bruce Friedman
Posted Tue, 01/15/2013 - 19:24

Tags:

4 Answers

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.
Helpful? 0

Here is what my 2009 IECC says: (I don't have a "V")
402.1.3 U-factor alternative. An assembly with a U-factor equal to or less than that specified in Table 402.1.3 shall be permitted as an alternative to the R-value in Table 402.1.1.

Answered by Armando Cobo
Posted Wed, 01/16/2013 - 09:47

2.
Helpful? 0

Bruce,
I agree with Armando. Perhaps it's time to get bifocals?

Answered by Martin Holladay, GBA Advisor
Posted Wed, 01/16/2013 - 10:00

3.
Helpful? 0

MIne says:

402.1.3 V-factor alternative. An assembly with a V-factor equal to or less than that specified in Table 402.1.3 shall be permitted as an alternative to the R-value in Table 402.1.1.

See attached screen shot...

I already have the bifocals..... :)

I am referring to my PDF version of the IECC 2009.....I have not checked by book version yet but I will...

Screenshot_1_16_13_5_07_PM.jpg
Answered by Bruce Friedman
Posted Wed, 01/16/2013 - 18:01

4.
Helpful? 0

Bruce,
Looks like a typo...

Answered by Martin Holladay, GBA Advisor
Posted Wed, 01/16/2013 - 19:01

Other Questions in Building Code Questions

In Energy efficiency and durability | Asked by TERRY KELLEY | Jul 23, 14
In Green building techniques | Asked by Linda Zwart | Jul 23, 14
In Green products and materials | Asked by Steve Young | Jul 23, 14
In General questions | Asked by JOANN CORTINA | Jul 22, 14
In Energy efficiency and durability | Asked by Janet Blayone | Jul 22, 14
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!