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

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

ANSI Information

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

SDI Anniversary

The SDI recently celebrated it's 75th anniversary and we are proud of 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.

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).

contact us:

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

related sites:

The following sites closely relate to SDI activities:

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.

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.

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.

Visit our order form page to purchase RDDM and FDDM as a bundle and save $25.00 over the cost of separate purchase.

SDI news and updates

  • NEW – SJI & SDI Webinar: DESIGNING WITH STEEL FLOOR DECK

    This webinar from the Steel Joist Institute and the Steel Deck Institute will expand your knowledge of steel floor deck by introducing you to the manufacturing processes, shapes, properties, finishes and benefits of this product. The basis of this presentation is the recently released First Edition of the Steel Deck Institute (SDI) Floor Deck Design Manual (FDDM). Various floor deck design considerations will be explored as well as an overall coverage of fasteners and industry construction practices. REGISTER NOW.

  • New – Appendix IX for DDM03

    Appendix IX Addendum - Simpson Strong-Tie XL Screws is available for our Diaphragm Design Manual, Third Edition. This addendum can be downloaded from our Manuals and Handbooks page.

  • Now available – COSP14

    SDI Code of Standard Practice 2014 – No. COSP14 replaces our previous edition – COSP 2012. This version provides the latest industry standard information as to the sale, manufacture and installation of steel deck. COSP14 can be downloaded from our Manuals and Handbooks page.

  • New – SDI White Paper

    Visit our White Papers page to download our latest white paper, Diaphragm Analysis with Skew Walls – No. SKEW.

  • New – SDI Position Statement

    Our newest position statement, Building Information Modeling (BIM) Guidance is now available. Visit our Position Statement page to download this paper.

  • Coming Soon

    The Fourth Edition of the SDI Diaphragm Design Manual (DDM04) complies with the requirements of the new ANSI/AISI S310-2103 North American Standard for the Design of Profiled Steel Diaphragm Panels. It includes new and expanded design examples and diaphragm strength tables, including roof deck on cold-formed steel.