Since 1939, the Steel Deck Institute has provided uniform industry standards for the engineering, design, manufacture and field usage of steel decks.


The Second Edition of the SDI Roof Deck Design Manual (RDDM2) (©2020 by Steel Deck Institute) includes 15 Design Examples and 40 ksi Load Tables, including new ones for concentrated and moving loads.


Download the First Edition of our Steel Deck on Cold Formed Steel Framing Design Manual (SDCFSFDM) or visit our order page to purchase a printed and bound copy.


ansi information

Visit our ANSI Information page to learn more about the SDI as an Accredited Standards Developer.


The Second Edition of the SDI Floor Deck Design Manual (FDDM2) (©2020 by Steel Deck Institute) includes 13 Design Examples and Load Tables, including new ones for concentrated and scissor lift type moving loads.


Download the Third Edition of our Steel Deck Institute Manual of Construction with Steel Deck (MOC3) or visit our order page to purchase a printed and bound copy.


environmental product declaration - EPD

Download the new SDI Environmental Product Declaration (EPD) for Steel Roof and Floor Deck.


The Fourth Edition of the SDI Diaphragm Design Manual (DDM04) includes 25 Design Examples and Load tables for fasteners.*

*order information

Visit our order page to purchase our Engineering Manuals. Order two and save $25.00 or three and save $50.00. Now available as a PDF.


contact us:

Steel Deck Institute
140 W. Evans Street, Suite 203
Florence, SC 29501
p 843.407.7411
Contact SDI.

related sites:

The following sites closely relate to SDI activities:

SDI news

  • SDI UPDATE

    SDI MANAGING DIRECTOR TRANSITION ANNOUNCEMENT

  • AVAILABLE NOW

    2022 SDI SHORT FORM SPECIFICATION
    The combined 2022 SDI Short Form Specification replaces our current 2017 Short Form Specifications for Steel Roof Deck, Composite Floor Deck, and Non-Composite Floor Deck.

  • AVAILABLE NOW

    2022 ANSI STANDARDS
    ANSI/SDI SD-2022 – Standard for Steel Deck
    ANSI/SDI T-CD-2022 – Test Standard for Composite Steel Floor Deck-Slabs
    ANSI/SDI QA/QC-2022 – Standard for Quality Control and Quality Assurance for Installation of Steel Deck

  • AVAILABLE NOW – FDDM2

    The Second Edition of the SDI Floor Deck Design Manual (FDDM2) (©2020 by Steel Deck Institute) is available for purchase in either hard copy or digital form. This new book updates the First Edition, including compliance with the 2017 ANSI/SDI Standards. New information has also been added. This includes load tables and design examples for concentrated loads and scissor lift type moving loads. All of the load tables have now been made easier to read. Considerations for sound transmission and impact have also been included.

  • Available Now – RDDM2

    The Second Edition of the SDI Roof Deck Design Manual (RDDM2) (©2020 by Steel Deck Institute) is available for purchase in either hard copy or digital form. This new book updates the First Edition, including compliance with the 2017 ANSI/SDI Standards. Load tables are now based on 40 ksi material. New information has also been added. This includes load tables and design examples for concentrated loads and moving loads. All of the load tables have now been made easier to read.

  • Available Now

    SDI DIAPHRAGM INTERACTION CALCULATOR
    The SDI Diaphragm Interaction Calculator is a web based tool that allows for easy calculation of steel deck diaphragms under the influence of combined wind uplift and diaphragm shear in accordance with the AISI S310 North American Standard for the Design of Profiled Steel Diaphragm Panels. Both ASD and LRFD solutions are provided for strength and stiffness for 1-1/2" Wide Rib and 3" Deep Rib roof deck. Fasteners include welds and generic screws, and supports include rolled beams, steel joists, and cold-formed steel framing.

  • Available Now

    SDI STEEL DECK ON COLD-FORMED STEEL FRAMING (SDCFSFDM)
    The design and usage of steel deck on cold-formed steel framing is similar to deck supported on open web steel joists or rolled beams, but there are some differences. The First Edition of the SDI Steel Deck on Cold-Formed Steel Design Manual points out those differences and provides the design guidance that is necessary to enable steel deck to be properly used in this application, including 7 design examples.

  • Available Now

    2017 ANSI STANDARDS
    ANSI/SDI RD-2017 – Design Standard for Steel Roof Deck
    ANSI/SDI C-2017 – Design Standard for Composite Steel Floor Deck-Slabs
    ANSI/SDI NC-2017 –Design Standard for Non-Composite Steel Floor Deck
    ANSI/SDI T-CD-2017 – Test Standard for Composite Steel Floor Deck-Slabs
    ANSI/SDI QA/QC-2017 – Quality Control and Quality Assurance for Installation of Steel Deck

  • Available Now

    2017 SDI SPECIFICATIONS (SUPERCEDED)
    SDI Short Form Specifications (2017) replace our current SDI Short Form Specifications for Steel Roof Deck, Composite Floor Deck and Non-Composite Floor Deck (2014).

  • Available Now

    2017 SDI CODE OF STANDARD PRACTICE SDI Code of Standard Practice 2017 (COSP17) replaces our current edition – COSP14, and provides the latest industry standard information regarding the sale, manufacture, and installation of steel deck.

  • Available Now

    SDI MANUAL OF CONSTRUCTION
    WITH STEEL DECK (MOC3)

    The new Third Edition of the Steel Deck Institute Manual of Construction with Steel Deck (MOC3) continues the tradition established by earlier editions to provide information necessary for the proper field usage of steel deck. This edition is reformatted for easier use with updated references, including those for the SDI QA/QC Standard for Quality Control and Quality Assurance for Installation of Steel Deck.