June 2020 – The Second Edition of the Roof Deck Design Manual (RDDM2) supersedes and enhances its predecessor, incorporating the updated 2017 ANSI/SDI Design Standards and aligning with the 2018 and 2021 IBC codes. With load tables reflecting 40 ksi material, RDDM2 provides comprehensive information, including design examples and load tables for concentrated loads and moving loads. Additionally, the revised load tables ensure improved readability for ease of reference and application.
PLEASE NOTE: The following updates to our Roof Deck Design Manual, Second Edition, No. RDDM2 are available: