[Radiance-general] Daylight Autonomy Benchmarks

[Tim Perry]

Dear Buyanda,

I'd recommend the Daylight Pattern Guide.
http://patternguide.advancedbuildings.net/using-this-guide/analysis-methods/daylight-autonomy

Enjoy,
Tim


On Thu, Oct 4, 2012 at 3:52 AM, Bayanda Mpauli <bayanda at pjc.co.za> wrote:
> Dear All
>
>
>
> I am looking for papers/research for DA thresholds related to good indoor
> environmental quality that can be referenced in our South African version of
> LEED and was wondering if anyone might be able to point me in the right
> direction?
>
>
>
> The Green Building Council of South Africa is considering using Daylight
> Autonomy as an indicator for their Daylight Credit for the Greenstar SA
> Public and Education Building Tool – our version of LEED. They currently use
> DF. The credit falls under the Indoor and Environmental Quality section and
> so is about the positive impact of daylight on the occupants rather than
> energy savings. They have a separate glare related credit and so this does
> not have to be considered within this credit.
>
>
>
> At the moment the proposal for inclusion of DA includes the following
> thresholds.
>
>
>
> A DA of 80%  for 160lux with
>
> 1)      1 Point awarded for 30% of the occupied area
>
> 2)      2 points awarded for 60% of the occupied area
>
> 3)      3 points awarded for 90% of the occupied area
>
>
>
> They are trying to find out from the Green building Council of Australia
> (who has put the DA credit out for review in their industry and is the basis
> of the South Africa credtit) where the 80% and 160lux threshold has
> originated from and in the meantime have requested South Africa consultants
> to review these figures to determine what threshold would be considered
> appropriate and indicated of good indoor environmental daylight quality.
> Something to note is that the certification is for the building being handed
> over to tenants and it assumes no furniture nor portioning as that is not in
> the control of the landlord – in order for it to be representative  we would
> be proposing quite a low reflectance floor level to try and build in at
> least some representation of what might happen in the space if a daylight
> conscious tenant fitted out the space – alternatively we might up the 160
> lux threshold to something higher also to accommodate for furniture.  It is
> currently undefined whether it be incremental or continuous DA but I think
> this will just impact on the threshold selected.
>
>
>
> Ideally we would like to have the threshold based on some form of researched
> data already performed that can then be referenced. We are not in a position
> nor have the time to perform this research now. As the tools do get updated
> over time, it would be possible to review the figure and align it with the
> most current research or even review the applicability of DA itself and
> substitute it with future indicators that are more representative of
> daylight quality.
>
>
>
>
>
> Regards,
>
> Bayanda
>
> BAS (UCT)
>
> Green Star SA Accredited Professional
>
>
>
> PJ Carew Consulting
>
> 3rd floor 71 buitengraght Cape Town 8001
>
> tel: 021 426 4051  fax: 021 426 5050  cell: 083 335 9365
>
> bayanda at pjc.co.za   www.pjc.co.za
>
>
>
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general
>