[BLDG-SIM] Curtain wall frames and fenestration area

stvgates at pacbell.net stvgates at pacbell.net
Mon Apr 12 08:57:19 PDT 2004


[BLDG-SIM] Curtain wall frames and fenestration areaThe solution below can work, but does not take into account the effect of shading due to fins and overhangs.  For those windows, a better approach is to define one of the windows, together with its fins/overhang, and then use the window MULTIPLIER to establish the total number of windows on the wall wall.  If the overhang shades a significant portion of the wall, in addition to the window, then the overhang can be defined as a separate shading surface.
  ----- Original Message ----- 
  From: Mike Tillou 
  To: BLDG-SIM at gard.com 
  Sent: Monday, April 12, 2004 7:44 AM
  Subject: [BLDG-SIM] Curtain wall frames and fenestration area


  Renee,

  The easiest way to do this is to use a single window on each wall.  Calculate the percentage of window area that is actually frame and then adjust the frame-width to account for the increase.  You may end up with a window frame width that is 12 inches or bigger  (if the wall is large enough).  With a little ingenuity you can write some BDL code that will automatically calculate the window width, frame width and x position of the window on the wall so you don't get any cautions or warnings.  .  



  Michael Tillou, PE
  etc Group, Inc.
  PO Box 749,  North Adams, MA 01247
  Ph. (413) 458-9870   Mbl. (413) 652-1087  www.etcgrp.com



------------------------------------------------------------------------------
  From: postman at gard.com on behalf of Azerbegi, Renee
  Sent: Mon 4/12/2004 7:44 AM
  To: BLDG-SIM at gard.com
  Subject: [BLDG-SIM] Curtain wall frames and fenestration area


  Greetings,

  I am modeling a high-rise building in eQuest which has a significant amount of fenestration as curtain wall. This curtain wall, like many curtain walls, has metal frames around many small panes of glass that make up the total curtain wall. My question is, how do you treat the frames and the fenestration area?  If I model each small pane of glass and add the exact frame, this would probably overwhelm DOE2 due to the huge number of small windows.  If I model the glass as one big window, then is it correct to just add the total width of the frame to each of these large windows? Also, some of these curtain wall panes have fins to complicate things, so if I do one big glass pane, then adding the fins would make huge fins on either side of the glass. If you have dealt with modeling curtain walls, as probably many of you have, please let me know how you have dealt with these issues.

  Thank you,

  Renee

  Renee Azerbegi
  RMH Group
  303-239-0909x641


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