Code Changes Address Energy Conservation, Residential Construction

April 25th, 2016 by Casey Flores

The International Code Council (ICC) 2016 Committee Action Hearings continued over the weekend, with some changes being made to the International Energy Conservation Code (IECC) and the International Residential Code (IRC).

Of the IECC, for the codes CE72-16, which involved U, C, and F-factors of building envelopes, proponents lobbied for a change due to fix an “editorial oversight.”

Tom Culp of the Glazing Industry Code Committee said Table C402.4 was left out in the previous wording, and the proposal also had a statement added “to make it clear that fenestration must still meet the applicable SHGC requirements.”

Additionally, the document now references C402.1.5 in the alterations section to refer to specific values in the envelope performance alternative. Editorial changes to the language in skylight codes were updated for new skylights replacing old ones.

Proponents of a change to RE184-16 also had success in changing code wording. They added one sentence which clarifies “that the weighted average performance of replacement window units can be used for compliance purposes.”

CE 48-16, also proposed by Culp, was updated. The change relocated the provision for replacement fenestration from Section 401C for general provisions to the “more appropriate” Section C503 for alterations, which is where residential fenestration is addressed in the International Energy Conservation Codes.

For the IRC, Code RB 254-16 also had changes approved. Jeff Inks of the Window and Door Manufacturers Association (WDMA), said they clarify that the use of the 0.6 conversion multiplier is allowed when determining wind pressures in accordance with ASCE 7 and various other tests.

“While that is what the existing provision allows … [it] is not entirely clear and has led to confusion,” Inks said.

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