The Steel Deck Institute was formed to bring uniformity to the design, manufacture, quality control and construction practices applicable to cold-formed steel decking.

need specifications?

The following SDI specifications are now available:
SDI Short Form Specifications for Steel Roof Deck, Composite Floor Deck and Non-Composite Floor Deck (2014).

Need Standards?

Please visit our standards page to download any of the following ANSI/SDI standards:
  • ANSI/SDI C-2011 - Composite Steel Floor Deck - Slabs
  • ANSI/SDI QA/QC-2011 - Quality Control and Quality Assurance for Installation of Steel Deck
  • ANSI/SDI T-CD-2011 - Test Standard for Composite Steel Deck - Slabs
  • ANSI/SDI RD-2010 - Standard for Steel Roof Deck
  • ANSI/SDI NC-2010 - Standard for Non-Composite Steel Floor Deck

need safety recommendations?

Download our Steel Deck Institute Manual of Construction with Steel Deck (No. MOC2). Please note: This manual is also available in a pocket sized hard copy which can be ordered from our order form page.

SDI e-news

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contact us:

Steel Deck Institute
P.O. Box 426
Glenshaw, PA 15116
(p) 412.487.3325
(f) 412.487.3326
Contact SDI

related sites:

Please take the time to visit the following sites:

SDI news and updates

  • New! March 2014

    The First Edition of the recently released SDI Floor Deck Design Manual (FDDM) and the previously released First Edition of the Roof Deck Design Manual (RDDM) continue the efforts of past Steel Deck Institute publications to provide the design community with valuable information for the proper design and use of steel decks. This manual is now available.

  • SDI Celebrates 75 years

    This year marks the SDI’s 75th anniversary and we are proud to announce this milestone. Visit our anniversary page to see how we’ve evolved over the years and to find out what's on deck for our next 75 years.

  • New! Fall 2012

    The First Edition, RDDM, of the SDI Roof Deck Design Manual continues the efforts of the Steel Deck Institute to provide uniform industry standards for the engineering, design, manufacture and field usage of steel decks.