The American Composites Manufacturers Association (ACMA) has announced the reaffirmation of the ANSI/ACMA/FGMC-Grating Manual-2017 (R2025) FRP Composites Grating Manual for Pultruded and Molded Grating and Stair Treads. The standard received official approval from the American National Standards Institute (ANSI) on April 29, 2025, with the final action recorded in the May 9, 2025, edition of ANSI Standards Action (VOL. 56, NO. 19).

Serving as a vital reference for engineers, architects, and designers, the manual provides essential technical data including:

• Performance-based load tables
• Manufacturing tolerances
• Ordering guidance to support accurate specification and design decisions

Fiberglass reinforced polymer (FRP) grating, used in industrial and infrastructure applications for over 50 years, continues to gain adoption due to its corrosion resistance, lightweight properties, superior strength-to-weight ratios, and non-conductivity. The material also maintains long-lasting color integration, making it well-suited for demanding environments.

A distinctive feature of FRP design highlighted in the manual is its focus on serviceability through deflection limits rather than strength as the primary design criterion. This approach delivers higher safety margins, giving engineers and facility managers added confidence when specifying FRP solutions for critical applications.

Source: acmanet.org