Radiance for Spatial Daylight Autonomy

Hello,

My name is Stefanie, I work in the Green Building sector in Mexico with LEED
project certification. This year we are trying to take our daylight models
to the next level and be able to achieve all options of LEED v4 EQ Credit:
Daylight. For Option 1, we have to prove a Spatial Daylight Autonomy of
300lx for 50% of occupied hours per year as well as analyze the Annual
sunlight Exposure of 1000lx for 250h (ASE1000,250).

We are familiar with working with RADIANCE but we are not sure if it is
possible to carry out this analyses and get both results needed. Could you
help me with this doubt?

Hope to hear from you soon.

Regards,

Dear Stefanie,

The radiance results need to be analyzed to show that you meet the
requirements, but it can be done. Mudit Saxena at Vistar Energy Consulting
managed previous work at HMG and TRC using Radiance to perform the
necessary calculations. I recommend getting in touch with him:

Mudit Saxena
(916) 543-7186
[email protected]
http://www.vistar-energy.com

In the interests of full disclosure, I have worked for Mudit in the past.

Good luck,
Tim

···

On Thu, Jan 7, 2016 at 1:44 PM, Stefanie Madriz < [email protected]> wrote:

Hello,

My name is Stefanie, I work in the Green Building sector in Mexico with
LEED project certification. This year we are trying to take our daylight
models to the next level and be able to achieve all options of LEED v4 EQ
Credit: Daylight. For Option 1, we have to prove a Spatial Daylight
Autonomy of 300lx for 50% of occupied hours per year as well as analyze the
Annual sunlight Exposure of 1000lx for 250h (ASE1000,250).

We are familiar with working with RADIANCE but we are not sure if it is
possible to carry out this analyses and get both results needed. Could you
help me with this doubt?

Hope to hear from you soon.

Regards,

[image: Stefanie]

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Hi Stefanie,

You might want to check out the answers to a similar question posted on
unmethours.com here (
https://unmethours.com/question/627/daylight-simulation-for-leed-v40-ieqc7/
).

In summary, people indicate that IES-VE, SPOT, Daysim (or potential fork of
Daysim by CBEI), and Openstudio are either capable of doing what you ask or
will be soon. Note that I believe most if not all of these tools use
Radiance in the background.

Thanks,
Alex

*Alex N. Chapin, LEED AP BD+C, BEMP, LEED Project Reviewer*

*Principal*

*3R Building Sustainability*

www.3Rsustainability.com <http://www.3rsustainability.com/>

[email protected]

T: (724) 741-9900 x619

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Hello,
My name is Stefanie, I work in the Green Building sector in Mexico with
LEED project certification. This year we are trying to take our daylight
models to the next level and be able to achieve all options of LEED v4 EQ
Credit: Daylight. For Option 1, we have to prove a Spatial Daylight
Autonomy of 300lx for 50% of occupied hours per year as well as analyze the
Annual sunlight Exposure of 1000lx for 250h (ASE1000,250).
We are familiar with working with RADIANCE but we are not sure if it is
possible to carry out this analyses and get both results needed. Could you
help me with this doubt?
Hope to hear from you soon.
Regards,

···

To: <[email protected]>
Subject: [Radiance-general] Radiance for Spatial Daylight Autonomy

Stefanie

When I was at the UI-IDL Boise, I implemented LM-83 procedure (exactly what
you asked) in Radiance. Yes it can be done. The implementation is using
bash script. The result was presented in Radiance Workshop at NREL:
http://www.radiance-online.org/community/workshops/2013-golden-co/Djunaedy_vdw_mahic_lm83.pdf

Please email me via my other email (cc) if you have questions.

Ery

···

On Fri, Jan 8, 2016 at 4:44 AM, Stefanie Madriz < [email protected]> wrote:

Hello,

My name is Stefanie, I work in the Green Building sector in Mexico with
LEED project certification. This year we are trying to take our daylight
models to the next level and be able to achieve all options of LEED v4 EQ
Credit: Daylight. For Option 1, we have to prove a Spatial Daylight
Autonomy of 300lx for 50% of occupied hours per year as well as analyze the
Annual sunlight Exposure of 1000lx for 250h (ASE1000,250).

We are familiar with working with RADIANCE but we are not sure if it is
possible to carry out this analyses and get both results needed. Could you
help me with this doubt?

Hope to hear from you soon.

Regards,

[image: Stefanie]

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[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

Hi Stefanie, Alex, Ery

Stefanie, LightStanza is web-based software for daylight analysis that
computes sDA in a rigorous way (which was not mentioned in Alex’s response).

Ery, Thank you for sharing your experiences developing a workflow for sDA--
it's a challenging metric!

We are posting a blog series about it:

Which includes a section on Blinds Operations-- a new, long-overdue yet
controversial and not well understood innovation.

kind regards,

- Dan

···

--

Daniel C. Glaser, PhD, LEED AP BD+C, IESPrincipal
Light Foundry, LLC*Creators of LightStanza.com*
Boulder, Colorado

Direct: +1.510.387.8890Main: +1.720.722.0771

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On Fri, Jan 29, 2016 at 4:33 AM, Ery Mailing-List <[email protected] > wrote:

Stefanie

When I was at the UI-IDL Boise, I implemented LM-83 procedure (exactly
what you asked) in Radiance. Yes it can be done. The implementation is
using bash script. The result was presented in Radiance Workshop at NREL:

http://www.radiance-online.org/community/workshops/2013-golden-co/Djunaedy_vdw_mahic_lm83.pdf

Please email me via my other email (cc) if you have questions.

Ery

On Fri, Jan 8, 2016 at 4:44 AM, Stefanie Madriz < > [email protected]> wrote:

Hello,

My name is Stefanie, I work in the Green Building sector in Mexico with
LEED project certification. This year we are trying to take our daylight
models to the next level and be able to achieve all options of LEED v4 EQ
Credit: Daylight. For Option 1, we have to prove a Spatial Daylight
Autonomy of 300lx for 50% of occupied hours per year as well as analyze the
Annual sunlight Exposure of 1000lx for 250h (ASE1000,250).

We are familiar with working with RADIANCE but we are not sure if it is
possible to carry out this analyses and get both results needed. Could you
help me with this doubt?

Hope to hear from you soon.

Regards,

[image: Stefanie]

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Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

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