STRUCTURAL

DESIGN MANUAL

Purlin Systems Design Manual

The Dimond Structural Systems Design Manual is a comprehensive document for Structural Engineers to use when designing projects to meet the capabilities of our steel purlin systems.

Download complete manualLast updated August 2026
1.0 - 1.1 SCOPE OF USE & DURABILITY
  • 1.1.1 Scope
  • 1.1.2 Coating Material Specifications
  • 1.1.3 Environments
    • 1.1.3.1 General
    • 1.1.3.2 Limitations on Use
  • 1.1.4 NZBC Compliance
  • 1.1.5 Durability Statement
  • 1.1.6 Maintenance
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1.2 GENERAL DESIGN CONSIDERATIONS
  • 1.2.1 DHS Purlin System Quick Reference Guide
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1.3 SPECIFIC DESIGN – DIMOND PURLIN SYSTEM
  • 1.3.1 Design Basis
  • 1.3.2 Dimond Purlin System Design Considerations
  • 1.3.3 DHS Purlin System Section Properties
  • 1.3.4 DHS Purlin System Load Span Tables
    • 1.3.4.1 Axial Compression Capacities
    • 1.3.4.2 Load Span Tables - Single Span
    • 1.3.4.3 Load Span Tables - End Span
    • 1.3.4.4 Load Span Tables - Internal Span
    • 1.3.4.5 Load Span Tables - End Span Lapped
    • 1.3.4.6 Load Span Tables - Internal Span Lapped
    • 1.3.4.7 Purlin Standard Hole Locations
  • 1.3.5 Plain CEE Section Properties
  • 1.3.6 Plain CEE Load Span Tables
    • 1.3.6.1 Axial Compression Capacities
    • 1.3.6.2 Load Span Tables - Single Span
    • 1.3.6.3 Load Span Tables - Internal Span
    • 1.3.6.4 Load Span Tables - End Span
    • 1.3.6.5 Purlin Standard Hole Locations
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1.4 INSTALLATION - DIMOND PURLIN SYSTEM
  • 1.4.1 Dimond Purlin System Material Specification
  • 1.4.2 Dimond Purlin System Short Form Specification
  • 1.4.3 Dimond Purlins Splice Joint
  • 1.4.4 Dimond Purlin System Components
    • 1.4.4.1 Fastbrace
    • 1.4.4.2 Bolted Brace Channel
    • 1.4.4.3 Brace Channel Section Properties
    • 1.4.4.4 Portal Cleats
    • 1.4.4.5 General Purpose Bracket
    • 1.4.4.6 Sag Rods
    • 1.4.4.7 Timber Battens
    • 1.4.4.8 Dimond Purlin System CAD Details
  • 1.4.5 Bracing System Installation
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TOP HAT PURLINS SYSTEMS DESIGNS MANUAL

Top Hat Purlin Systems Design Manual

  • 2.0 SCOPE OF USE

     

  • 2.1 DURABILITY 
    • 2.1.1 Scope 
    • 2.1.2 Coating Material Specifications 
    • 2.1.3 Environments 
      • 2.1.3.1 General 
      • 2.1.3.2 Limitations on Use 
    • 2.1.4 NZBC Compliance 
    • 2.1.5 Durability Statement

      • 2.1.6 Maintenance 

         

  • 2.2 SPECIFIC DESIGN – DIMOND PURLIN SYSTEM
    • 2.2.1 Design Basis
    • 2.2.2 Design Considerations 
    • 2.2.3 Top Hat Purlin System Section Properties 
    • 2.2.4 Top Hat Purlin System Load Span Tables 
    • 2.2.5 Top Hat Purlin System Design Examples 

    • 2.2.6 Top Hat Floor Joist Span Table 

       

  • 2.3 INSTALLATION - DIMOND TOP HAT PURLIN SYSTEM
    • 2.3.1 Top Hat Purlin System Material Specification 
    • 2.3.2 Top Hat Purlin System Short Form Specification 
    • 2.3.3 Top Hat Purlin System Components 
      • 2.3.3.1 Support Strap 
      • 2.3.3.2 Fixing Details 
    • 2.3.4 Top Hat Purlin System CAD Details
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Flooring Systems Design Manual

The Dimond Structural Systems Design Manual is a comprehensive document for Structural Engineers to use when designing projects to meet the capabilities of our composite steel floor decking systems.

Download Complete ManualLast updated August 2026
3.0 - 3.1 SCOPE OF USE & DURABILITY
  • 3.0 Scope of use
  • 3.1 Durability
  • 3.1.1 Scope
  • 3.1.2 Coating Material Specifications
  • 3.1.3 Environments
    • 3.1.3.1 General
    • 3.1.3.2 Limitations on Use
  • 3.1.4 NZBC Compliance
  • 3.1.5 Durability Statement
  • 3.1.6 Maintenance
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3.2 GENERAL DESIGN CONSIDERATIONS
  • 3.2.1 Formwork
  • 3.2.2 Composite Floor Slab
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3.3 SPECIFIC DESIGN – HIBOND 80 FLOORING
  • 3.3.1 Design Basis
  • 3.3.2 Hibond 80 Design Considerations
    • 3.3.2.1 Formwork
    • 3.3.2.2 Composite Floor Slab
  • 3.3.3 Hibond 80 Section Properties
  • 3.3.4 Hibond 80 Load Span Tables
  • 3.3.5 Hibond 80 Acoustic Performance
  • 3.3.6 Hibond 80 Design Examples
  • 3.3.7 Hibond 80 Material Specification
  • 3.3.8 Hibond 80 Short Form Specification
  • 3.3.9 Hibond 80 Components
    • 3.3.9.1 Edge Form
    • 3.3.9.2 Edge Form Support Strap
    • 3.3.9.3 End Caps
    • 3.3.9.4 Rake Cut Edge Flashings
  • 3.3.10 Hibond 80 CAD Details
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3.4 SPECIFIC DESIGN – HIBOND 55 FLOORING
  • 3.4.1 Design Basis
  • 3.4.2 Hibond 55 Design Considerations
    • 3.4.2.1 Formwork
    • 3.4.2.2 Composite Floor Slab
  • 3.4.3 Hibond 55 Section Properties
  • 3.4.4 Hibond 55 Formwork Design Tables
  • 3.4.5 Hibond 55 Composite Floor Slab Load Span Tables
  • 3.4.6 Hibond 55 Fire Design Tables
  • 3.4.7 Hibond 55 Acoustic Performance
  • 3.4.8 Hibond 55 Design Examples
  • 3.4.9 Hibond 55 Material Specification
  • 3.4.10 Hibond 55 Short Form Specification
  • 3.4.11 Hibond 55 Components
    • 3.4.11.1 Edge Form
    • 3.4.11.2 Edge Form Support Strap
    • 3.4.11.3 End Caps
    • 3.4.11.4 Rake Cut Edge Flashings
  • 3.4.12 Hibond 55 CAD Details
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3.5 SPECIFIC DESIGN – FLATDECK FLOORING
  • 3.5.1 Design Basis
  • 3.5.2 Flatdeck Design Considerations
    • 3.5.2.1 Formwork
    • 3.5.2.2 Composite Floor Slab
  • 3.5.3 Flatdeck Section Properties
  • 3.5.4 Flatdeck Formwork Design Tables
  • 3.5.5 Flatdeck Composite Floor Slab Load Span Tables
  • 3.5.6 Flatdeck Fire Design Tables
  • 3.5.7 Flatdeck Acoustic Performance
  • 3.5.8 Flatdeck Design Examples
  • 3.5.9 Flatdeck Material Specification
  • 3.5.10 Flatdeck Short Form Specification
  • 3.5.11 Flatdeck Components
    • 3.5.11.1 Edge Form
    • 3.5.11.2 Edge Form Support Strap
  • 3.5.12 Flatdeck CAD Details
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3.6 INSTALLATION - FLOORING SYSTEMS
  • 3.6.1 General
  • 3.6.2 Safety Considerations
  • 3.6.3 Handling and Storage
  • 3.6.4 Propping
  • 3.6.5 Laying Steel Decking Sheets
  • 3.6.6 Concrete Placement
Download AllLast updated August 2026