leothebuilder
Member
I have a building that was designed under the 2006 codes. The building was never constructed because of the economy. The owners now want to proceed and the plans need to be updated to current 2012 codes. The building has fenestration on all four walls in excess of the allowed 30% under the 2012 IECC. The option is to use comcheck that uses the ASRAE 90.1
The comcheck ASHRAE 90.1 program allows me to use the large fenestration areas in excess of 40%.
I thought ASHRAE 90.1 (2010) doesn't allow windows in excess of 40% of wall area, or is that just when using the prescriptive method.
The ComCheck ASHRAE 90.1 software does allow me to enter values in excess of 40% and provided I use the correct materials the envelope passes.
Using the ComCheck 2012 IECC , the software issues a warning that you exceed the allowable window area.
I just want to make sure I am on the correct path before I go much further with updating plans.
Any input or advise would be appreciated.
The comcheck ASHRAE 90.1 program allows me to use the large fenestration areas in excess of 40%.
I thought ASHRAE 90.1 (2010) doesn't allow windows in excess of 40% of wall area, or is that just when using the prescriptive method.
The ComCheck ASHRAE 90.1 software does allow me to enter values in excess of 40% and provided I use the correct materials the envelope passes.
Using the ComCheck 2012 IECC , the software issues a warning that you exceed the allowable window area.
I just want to make sure I am on the correct path before I go much further with updating plans.
Any input or advise would be appreciated.