As the International Code Council (ICC) 2016 Committee Action Hearings continued this past weekend, numerous glazing and fenestration-related proposals were approved—many involving daylighting.

Among the approved changes in the International Energy Conservation Code (IECC) was one (C402.4.1.2) that increased skylight area from five to six percent when daylighting controls are used, aligning the IECC code percentage with ASHRAE 90.1.

Meanwhile, CE98-16, which was approved as modified, revised some verbiage in the code, replacing “under skylights” with “toplight” and adding “sidelight” while removing “adjacent to vertical fenestration.”

“This section and figure titles need to reflect the same names as the requirements within them do,” proponent Hope Medina of the Colorado chapter of ICC explained. “That way people can find what they’re looking for.”

CE102-16 was also approved as modified. The change moves daylight definitions and pictures to an earlier section in the code for ease of use. Like CE98-16, it doesn’t add or alter requirements, but was done for clarification purposes.

Another proposal approved as modified was CE192-16. This adds the option for lighting power density to be reduced by a certain percentage in daylit areas in exchange for an exception to daylight responsive controls. It doesn’t change the actual code requirements, but gives the lighting designer that option.

Other industry-related clarifications included alterations to CE72-16, which involves U, C and F-factors of building envelopes. Proponents lobbied for a change to fix an “editorial oversight.”

Tom Culp of the Glazing Industry Code Committee said Table C402.4 was omitted 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.

In the International Residential Code, RB254-16 also had changes approved. Jeff Inks of the Window and Door Manufacturers Association (WDMA) said the changes 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.

Proponents of RE184-16 were also successful in changing code wording. They added once 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 IECC.