2024 National Design Specification (NDS) for Wood Construction and Commentary with 2024 NDS Supplement Design Values for Wood Construction. The 2024 National Design Specification (NDS) for Wood Construction was developed by AWC’s Wood Design Standards Committee and approved as a standard by ANSI (American National Standards Institute) on October 16, 2023. The 2024 NDS is referenced in the 2024 International Building Code.