CHICAGO - The American Ladder Institute (ALI), the national trade association representing the North American ladder industry, has released the updated A14.9 standard which provides guidelines for the use of Disappearing Attic Stairways.
The standard prescribes rules for permanently installed metal or wood disappearing attic stairways, used in household or commercial settings.
”We are pleased to release updated guidelines for the design, construction and use of disappearing attic stairways. The Subcommittee focused on providing the most current information regarding materials and construction of both household rated and commercial systems. The continued advance of this standard is a clear demonstration of the commitment of the American Ladder Institute to ladder safety,” said Jon Ver Halen, A14.9 Subcommittee Chairman.
The revision replaces the 2004 standard, formerly entitled “Ceiling Mounted Disappearing Climbing Systems.”
Read the American Ladder Institute's press release for additional details.
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