The American Ladder Institute (ALI), the national trade association representing the North American ladder industry, has updated its A14.4 standard to reduce personal injuries on job sites.
"The newly revised standard provides more flexibility for the contractor on the job site to meet the safety requirements for job-made ladders,” said Dr. Steve Cramer, A-14.4 Subcommittee Chairman. “The continued advance of this standard is a clear demonstration of the commitment of the American Ladder Institute to ladder safety."
The standard is a guide for compliance with minimum required specifications when job-made wooden ladders are being constructed for temporary access on construction and demolition operations.
The primary features of the 2009 revision of A14.4 focus on the following:
• Acceptable lumber grades in the construction of wooden ladders
• Revised engineering calculations for lumber grades and sizes
• Language simplified for consistency and clarity
• Revised figures with dimensioning detail
ALI is the American National Standards Institute (ANSI) approved developer of standards for the ladder industry. American National Standards are intended for use by manufacturers, consumers and the general public. In addition to A14.4, ALI develops the following standards:
• A14.1 - Wood Ladders
• A14.2 - Portable Metal Ladders
• A14.3 - Fixed Ladders
• A14.5 - Portable Reinforced Plastic Ladders
• A14.7 - Mobile Ladder Stands and Mobile Ladder Stand Platforms
• A14.9 - Ceiling Mounted Disappearing Climbing Systems
For more information, or to purchase standards, visit t www.americanladderinstitute.org.