With the limitations in the IECC for fenestrations to a maximum of 40%, how does one design a glazed curtain wall? Would that be where Table 402.1.2 comes into play that if the entire assembly gets a U factor of less than that Table then it’s permitted? If not Table 402.1.2, then where is the language that would allow the glazed curtain wall? Or would a glazed curtain wall even be permitted under the 2012 IECC?
What purpose does Table 402.1.2 serve if it's not for a glazed curtain wall application? I'm not sure I understand when it would be used.
What purpose does Table 402.1.2 serve if it's not for a glazed curtain wall application? I'm not sure I understand when it would be used.