Reference reflectances for office space surfaces?

radiance-general
1

Lars,

It won't be of much help to you probably, but EN 12464-1:2002 (paragraph
4.2) gives you a range of reflectances for interior surfaces:
— ceiling: 0,6 to 0,9
— walls: 0,3 to 0,8
— working planes: 0,2 to 0,6
— floor: 0,1 to 0,5

For similar lighting evaluations we normally use: ceiling 70%, walls 50% and
floor 10% or 20%.

Casper Esmeijer

...
I have seen the assumption of 80%, 50%, 20% neutral grey levels for
office spaces quite a lot, but I wonder if there is anything like a
standard for a "generic" office environment anywhere. Does anyone have a
link to a recommendation what to use when doing studies on an office
space whose surface properties are not known yet?

Thank you, Lars.

2

Sure, try the IESNA Lighting Handbook. Some of that information, I think, is also included in *Mechanical and Electrical Systems for Buildings*.

Randolph Fritz
   design machine group
   architecture department
   university of washington
[email protected]

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On Dec 10, 2008, at 1:56 AM, Lars O. Grobe wrote:

I have seen the assumption of 80%, 50%, 20% neutral grey levels for office spaces quite a lot, but I wonder if there is anything like a standard for a "generic" office environment anywhere. Does anyone have a link to a recommendation what to use when doing studies on an office space whose surface properties are not known yet?

3

IESNA recommends 80% ceiling reflectance and 60% forwindow wall reflectances and 30-70% for windowless walls. see NRC C.O.P.E. research for further infohttp://irc.nrc-cnrc.gc.ca/ie/cope/04-3-Lighting_Design_e.html#_Elementshope that helpssteve> Date: Wed, 10 Dec 2008 17:56:38 +0800> From: [email protected]> To: [email protected]> Subject: [Radiance-general] Reference reflectances for office space surfaces?> > I have seen the assumption of 80%, 50%, 20% neutral grey levels for > office spaces quite a lot, but I wonder if there is anything like a > standard for a "generic" office environment anywhere. Does anyone have a > link to a recommendation what to use when doing studies on an office > space whose surface properties are not known yet?> > Thank you, Lars.> > _______________________________________________> Radiance-general mailing list> [email protected]> http://www.radiance-online.org/mailman/listinfo/radiance-general

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