IES-VE User Forum

Forgive my ignorance, i'm a novice. But why does IES use differing glass properties to define glazing constructions to those that are generally available from the glass manufacturers?

Manufacturers give us, LT, UV, LR out, LR in, ET, ER, EA, and g for glass combinations. I cant help feeling that IES is a tad confusing. Well to me anyway. The user guides offer little instruction. Can someone direct me to some understanding? I am sure theres a good reason but I cant think why generic manu data input wouldnt be more useful instead.

it's a fair point but you can specify the glazing pretty easily you are always going to have refl and trans properties. The g is derived so it would be nice to have a wizard where you only specified the total reflection, transmittance and g.
Download the Laurence Berkley Window tool - you'll find that's a really helpful tool.

Here's a link:

http://windows.lbl.gov/software/window/window.html

don't think I've seen that before, looks quite useful

Hi Phil,

It's a good little tool that and might be worth linking to it on your (eugh ) website...

Zap