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Girder-Slab® structural floor system
Girder-Slab® structural floor system
  • THE SYSTEM
  • WHY IT WORKS
  • PROJECTS
  • SUSTAINABILITY
  • FOR ENGINEERS
<span style="font-size: 14px;">Start a Project<br></span>
<span style="font-size: 14px;">Start a Project<br></span>
  • THE SYSTEM
  • WHY IT WORKS
  • PROJECTS
  • SUSTAINABILITY
  • FOR ENGINEERS
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D-BEAM® Design Calculator

Official online calculator for
the Girder-Slab® System

Performs all 11 design checks per ANSI/AISC 360-22 and the AISC Steel Construction Manual 16th Edition.
Launch Calculator
Element slenderness
top flange, castellated top flange, web
Strength
top flange to web connection, composite shear, bottom flange transverse moment
Strength
moment on noncomposite and composite sections
Ductility
bottom flange flexural strain at ultimate Serviceability — live load and total net deflection
Serviceability
live load and total net deflection
Reference Standards · ANSI/AISC 360-22 · AISC Manual 16th Ed · IBC 2024 · ACI 318-22
GIRDER-SLAB®
The established standard for achieving low floor-to-floor heights with structural steel in multi-story residential construction.
THE SYSTEM
  • How It Works
  • D-Beam® Technology
  • Assembly Sequence
  • Fire Rating (UL K912)
WHO IT'S FOR
  • Developers
  • Structural Engineers
  • General Contractors
  • Architects
RESOURCES
  • Girder Calculator
  • CAD Details
  • Spec Guide
  • Design Guide v3.5
    • Legal Stuff
    • Privacy Policy

    © 2026 Composite Structural Steel Systems, LLC. All rights reserved. GIRDER-SLAB® and D-BEAM® are registered trademarks of Girder-Slab Technologies, LLC.

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