Hello,

I have five questions about the five-phase method tutorial (version 2.2)

(available at:

http://www.radiance-online.org/learning/tutorials/fivephasetutorialfiles/Tutorial-FivePhaseMethod_v2.pdf)

that I would appreciate if you could help me with:

1- In the tutorial, a single polygon (relative to the outline of the

glazing surface) is modeled in the scene at the exterior side of the

window. This polygon is referenced to generate the daylight matrix. A

second polygon is modeled in the scene on the interior side of the window

and it is referenced to calculate the view matrix.

I was wondering if I could generate two identical co-planar polygons where

the normal vector of one polygon is looking at the interior side and the

normal vector of the other polygon looks at the exterior side to be

referenced, respectively, for the view matrix and daylight matrix

calculations? if so, would it still be necessary to model the thickness of

the walls hosting fenestration systems in the simulation scene?

2- What is the "proxy geometry" in the five-phase method? is the "proxy

geometry" exclusively a reference to the polygon at the interior side of

the window system that is assigned a BSDF material?

or is the "proxy geometry" a reference to the 3D geometry of the venetian

blinds (or any other type of shading layer of the fenestration system) in

the scene?

3- what is the "thickness" as the first parameter in the Radiance BSDF

material type referring to? is it measured as the distance between the

daylight matrix polygon on the exterior side of the window and the view

matrix polygon at the interior side?

or does "thickness" refer to the depth of the entire fenestration system

including the glazing panes and any shading layers?

4- If I model the mullions defining the edge condition of any individual

glazing pane in 3D scene, what would be the difference between using LBNL's

Window to generate a BSDF file and using genBSDF?

5- What would be the difference between using a BSDF file based on Klem's

division scheme with higher resolution (where each Klem's patch is

subdivided to 4 new patches) and using a tensor tree BSDF?

Thank you,

Alireza