[Equest-users] ASHRAE baseline building rotation

[Dahlstrom, Aaron]

A heads up Andrew - I think you are using 90.1-2004 yes? - for a new building?

Appendix G - 2004 Table G.2.1.(c) - says to use SHGCall for the baseline glazing - ie no differention for North-facing glass.

ASHRAE 90.1-2007 eliminated this requirement - but it also eliminated a different allowance for North-glass SHGC - all directions of glass must meet the same SHGC requirement.

Aaron Dahlstrom , PE, LEED(r) AP
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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Howe, Timothy
Sent: Wednesday, March 31, 2010 9:20 AM
To: Andrew Mackay; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] ASHRAE baseline building rotation

Yes you should re-assign.

________________________________
From: equest-users-bounces at lists.onebuilding.org on behalf of Andrew Mackay
Sent: Wed 3/31/2010 3:32 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] ASHRAE baseline building rotation
ASHRAE Appendix G states that the baseline building glazing should conform with the 90.1 minimum standards. This is differentiated between north and other orientations.

Therefore my baseline building has low-performance glass on north facade and higher-performance glass on other facades.

My question is when rotating the baseline building during performance rating method, should the glazing be re-assigned? Ie) should each rotation meet 90.1 standards or only when the building is in its original orientation.

I'm sorry this isn't a strictly an equest question (equestion?) but I'm sure lots of you have encountered the same problem.

Cheers
--
Andrew MacKay


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