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the most reliable results. Have you tried performing the analysis using
the Radiance Plug-in which is seemingly far more realistic? For further
information regarding this you should refer to the the www.squ1.com
forums where there are plenty of posts concerning daylighting accuracy
and approaches to be taken.
=20
Kind Regards
=20

=20
Paul Barton=20

Senior Sustainability Consultant=20

=20

 <http://www.emediauk-uk.co.uk/6221=3D01-02BLlogo.gif> =09
Wallace Whittle Ltd, 18 Buckingham Gate, London, SW1E 6LB=09
Tel: (020) 7821 0800  Fax: (020) 7821 0820=09
Email: london at wallacewhittle.com <mailto:l at wallacewhittle.com>
http://www.wallacewhittle.com <http://www.wallacewhittle.com/>  =09
 =09
Registered Office: 8 Elmbank Gardens, Glasgow, G2 4NQ  Registered in
Scotland No. 111930=09
 =09
 <http://www.emediauk-uk.co.uk/6221=3D01-02BLlogo05.gif> =09
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P Please consider the environment before printing this e-mail

The information contained in this e-mail is confidential and is intended
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________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Leonard
Sciarra
Sent: 29 August 2007 16:19
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Exterior shades / daylight on floor surface -
ECOTECT


I may be expanding the forum somewhat, but, does anyone have experience
modeling exterior shades / fins to optimize day lighting using Ecotect?

=20
I am modeling some exterior shades and it seems that the impact on
internal light levels is not being reflected to the degree I would
expect.  Now I know the algorithm used uses a diffuse sky rather than
direct radiation, but still the effect of the shades does not seem to
reduce the internal light levels.  I ran a check using insolation and
direct radiation so I know the model "sees" the shades, but the daylight
is acting funny.
=20
Thanks.
=20

Leonard Sciarra, AIA, LEED ap

312.577.6580 (Dir)

G E N S L E R | Architecture & Design Worldwide

30 West Monroe Street

Chicago IL, 60603

312.456.0123

leonard_sciarra at gensler.com=20

=20

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<DIV dir=3Dltr align=3Dleft><SPAN class=3D041015415-29082007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>From my experience the daylight simulation tool =
in Ecotect=20
does not give the most reliable results. Have you tried performing the =
analysis=20
using the Radiance Plug-in which is seemingly far more realistic? For =
further=20
information regarding this you should refer to the the <A=20
href=3D"http://www.squ1.com">www.squ1.com</A> forums where there are =
plenty of=20
posts concerning daylighting accuracy and approaches to be=20
taken.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D041015415-29082007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D041015415-29082007><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Kind Regards</FONT></SPAN></DIV>
<DIV> </DIV>
<P></P>
<P></P>
<P style=3D"MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"></P>
<P style=3D"MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"></P>
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      <P style=3D"MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">Paul Barton=20
      <P style=3D"MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">Senior =
Sustainability=20
      Consultant=20
      <P style=3D"MARGIN-TOP: 0px; MARGIN-BOTTOM: =
0px"> </P></TD></TR>
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          <TD><FONT size=3D1>Wallace Whittle Ltd, 18 Buckingham =
Gate,=20
            London, SW1E 6LB</FONT></TD></TR>
        <TR>
          <TD><FONT size=3D1>Tel: (020) 7821 0800  Fax: =
(020) 7821=20
            0820</FONT></TD></TR>
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          <TD><FONT size=3D1>Email: <U>london</U></FONT><A=20
            href=3D"mailto:l at wallacewhittle.com"><FONT color=3D#000000=20
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</FONT><A=20
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          </FONT></TD></TR>
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          <TD><FONT size=3D1>Registered Office: 8 Elmbank Gardens, =
Glasgow, G2=20
            4NQ  Registered in Scotland No.=20
      111930</FONT></TD></TR></TBODY></TABLE></DIV></TD></TR>
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<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> BLDG-SIM at gard.com=20
[mailto:BLDG-SIM at gard.com] <B>On Behalf Of </B>Leonard =
Sciarra<BR><B>Sent:</B>=20
29 August 2007 16:19<BR><B>To:</B> BLDG-SIM at gard.com<BR><B>Subject:</B>=20
[BLDG-SIM] Exterior shades / daylight on floor surface -=20
ECOTECT<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D442305114-29082007>I may =
be expanding=20
the forum somewhat, but, does anyone have experience modeling exterior =
shades /=20
fins to optimize day lighting using Ecotect?   =
</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D442305114-29082007></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D442305114-29082007>I am =
modeling some=20
exterior shades and it seems that the impact on internal light levels is =
not=20
being reflected to the degree I would expect.  Now I know the =
algorithm=20
used uses a diffuse sky rather than direct radiation, but still the =
effect of=20
the shades does not seem to reduce the internal light levels.  I =
ran a=20
check using insolation and direct radiation so I know the model "sees" =
the=20
shades, but the daylight is acting funny.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D442305114-29082007></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D442305114-29082007>Thanks.</SPAN></FONT></DIV>
<DIV> </DIV>
<DIV align=3Dleft>
<P style=3D"MARGIN: 0in 0in 0pt" align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>Leonard Sciarra, AIA, LEED ap<o:p></o:p></FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>312.577.6580 (Dir)</FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>G E N S L E R | Architecture & Design =
Worldwide</FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>30 West Monroe Street<o:p></o:p></FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>Chicago IL, 60603<o:p></o:p></FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>312.456.0123<o:p></o:p></FONT></SPAN></P>
<P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Arial; mso-bidi-font-size: =
10.0pt"><FONT=20
size=3D2>leonard_sciarra at gensler.com <o:p></o:p></FONT></SPAN></P></DIV>
<DIV> </DIV><PRE>
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