ICC approves changes to window opening requirements – DWM Magazine
ICC approves changes to window opening requirements
April 29, 2021 by Chris Collier
The International Code Council (ICC) voted to make changes to the International Building Code (E 83-21) regarding window openings. The action took place during its committee action hearings which ran until virtually May 5. The Window and Door Manufacturers Association and the Fenestration Glazing Industry Alliance were both supporters of the changes which were approved by a tally of 14 to zero.
The language clarifies window protection requirements, such as window open control devices (WOCDs) and maximum openings on operable windows, as they apply based on height above ground . It also changes the specific location where the height should be measured: “at the bottom of transparent opening”, instead of “top of ledge of opening” to be consistent with other code definitions.
The changes also distinguish between separate window opening protection requirements / options for operable windows where the lowest part of the window opening is located more than 72 inches and below 75 feet above sea level. above the finished ground, compared to those located 75 feet or more above the ground. finished quality.
Industry professionals should note that while the proposal provides clarity, code officials say the changes do not increase or decrease construction costs. There are no substantive changes to the technical requirements or their application, according to the code documents.