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Dwellings are subject to both lateral and vertical loads. Lateral loads include wind and seismic forces. Examples of vertical loads include the weight of the structure itself, the furnishings, and snow on the roof.
The
Gypsum Association is, assuming that document processing has proceeded on
schedule since this column was written, on the cusp of releasing the latest
edition of the Fire Resistance Design Manual, GA-600. We anticipate a late
spring publication of the 2012 document.
For many decades, consensus wallboard application standards have mandated that the surface for the attachment of wallboard be at least “1½ inches wide for wood members.”
Since 2000, when three regional building code organizations (BOCA International; SBCCI; ICBO) combined to form the International Code Council, the ICC has exercised near-total control over the United States building code creation process.
When compared to the application process for
other construction materials, attaching a sheet of gypsum board is a reasonably
simple task. After all, how difficult is it to find a stud and run a nail or a
screw through the board?
Because
all three are installed to prevent the passage of fire and heat, it’s not a
stretch to say that a fireblock, a draftstop and a firestop system each serve
a similar purpose in a building’s fire protection.
The Final Action Hearings to create the 2012 International Residential Code and the 2012 International Building Code concluded in mid-May. Three items of interest to drywall contractors were approved during the meeting.
This column first ran in Walls & Ceilings in July 2005. Our technical service hotline has recently received several calls that this article addresses, so we have decided it’s time to revisit the topic. We have updated the article in a few places to ensure that the information is current and germane to today’s circumstances.