Mark said:
No more than the fire and exit codes based on the "TRIANGLE SHIRTWAIST FIRE".
I know nothing about that, maybe you could explain?
Mark said:
No more than selling "super windows" to people that don't need triple glazed glass
First that was a commercial enterprise, nothing to do with mandatory codes, second the new Energy Star ratings are requiring
F-0.30 windows with plans to go further down in some areas, the only way to do that "was" triple pane, now Cardinal has come out with their
new i81 coatings that can achieve 0.23 (0.20 center of glass) U-factors. I found out the whole dual pane thing was a fraud when I replaced all the windows in a large home owned by a Scotchman who was a retired PG&E electrical engineer, he called me over to a meeting one year later to show me a spreadsheet wherein he had compared on a month-to-month basis (factoring in U.S. Government temperatures for his area) the year before to the year after utility consumption showing no difference. This led me to the Lawrence Berkeley Laboratories' Daylighting Institute and their Reno test facility to see
windows outperforming walls, the real fraud is dual pane windows, back as far as 1998 my Title 24 Energy Consultant refused to accept my U-0.35 dual pane windows, instead factoring in the then default of 0.75, I asked him why on the second home and he stated that unless I gave him 0.20 or lower his program showed no difference.
BTW, in the new home that I now have in Design Review I am using triple pane 0.15 Windows, in case you don't want to participate in the dual pane fraud yourself you might want to try my glass package: Triple-Pane w/LoĒ³-366, LoĒ-179, LoĒ-i81, Argon U-0.15. I have several homes including my own that us little or no HVAC energy, of course I don't build "affordable" either. Of course we all know that as a knowledgeable architect you always engineer your windows with
RESFEN, or then again since you are located in Southern California maybe not.
But then again, I am not forcing anybody to do that, in fact I tell everyone that it's cheaper in the long run to just pay their utility bills and not spend the money to do it right, but don't waste your money on off-the-shelf dual pane windows.