[Bldg-sim] Daylighting Calculations for LEED

[Tariq Abbas]

I used dialux and  found it differs compared to Radiance. A better fit
is relux. 

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Rob
Guglielmetti
Sent: 13 February 2010 01:27
To: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Daylighting Calculations for LEED

I ran into limitations with the USGBC's other compliance demonstration
methods all the time at my last job; the so-called glazing factor
spreadsheet can only deal with very basic space types. I always used
Radiance for my simulation-based documentation, because it's what I'm
familiar with. But folks here have mentioned the other popular ones. Any
lighting simulation software that includes a daylight simulation
component will likely work, as long as you can set up grids and define
standard CIE clear and overcast sky types (depending on which compliance
path you're using). Lumen Designer is no longer commercially available,
but as mentioned, AGI32, Radiance, and also 3DStudio Max Design can all
be used for these types of simulations when the spreadsheet the USGBC
provides falls short. DiaLux is a freely available (Windows) program
that incorporates daylighting calculations as well:

http://www.dial.de/CMS/English/Articles/DIAL/DIAL.html?ID=1

- Rob Guglielmetti

On Fri, February 12, 2010 2:05 pm, Nick Caton wrote:
> I regularly use AGI32 for any daylighting studies, though I've not yet

> been involved in a project where that credit was not handled by the 
> non-photometric options of documenting compliance.


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