How To Install LYSAGHT BONDEK® steel decking

The construction of LYSAGHT BONDEK® steel decking is a simple, familiar and widely accepted practice. This page details some of the main steps for installation of LYSAGHT BONDEK®.

For detailed installation instructions: Download LYSAGHT BONDEK® Design and Construction Manual 2012 (795 kb)

Step 1: Open LYSAGHT BONDEK® sheet bundles LYSAGHT BONDEK® - open sheet bundles
Step 2: Place props if required LYSAGHT BONDEK® - placing props
Step 3: Trim LYSAGHT BONDEK® sheets if required and place LYSAGHT BONDEK® - trimming sheets
Step 4: Fix LYSAGHT BONDEK® sheets to steel beams if required LYSAGHT BONDEK® - fix BONDEK® sheets to steel beams if required
Step 5: Fix steel edgeform LYSAGHT BONDEK® - fix edgeform
Step 6: Cut penetration
Step 7: Place reinforcement and post tensioning if required LYSAGHT BONDEK® - Place Reinforcement
Step 7a: Post Tensioning Hold Down Clip LYSAGHT BONDEK® - Post tensioning clip
Step 8: Place concrete
Step 9: Allow slab to cure and remove props LYSAGHT BONDEK® - allow slab to cure, remove props
Step 10: Install services and ceilings with LYSAGHT BONDEK® accessories LYSAGHT BONDEK® - Bon Wedge
Bon Wedge
Bon Nut
Bon Strip

General Notes

  1. At a minimum, BONDEK® shall be secured at every pan at ends of sheets and also at permanent supports. Failure to secure BONDEK® at supports may lead to excessive deformation and structural failure.
    • Suitable fixing methods should be used such as spot welds, self drilling screws or drive nails.
      There are two sets of formwork tables:
      • Ratio of two adjacent slab spans are equal
      • The ratio of the longer slab span (Ll) to the shorter slab span (Ls) does not exceed 1.2, that is Ll /Ls< 1.2.

  2. The tables shall be used for normal density concrete (2400kg/m3).

  3. The lines of support shall extend across the full width of the sheeting and have a minimum bearing 50mm at the ends of the sheets and 100mm at intermediate supports over which sheeting is continuous, including at props. 25mm minimum bearing length at the ends of sheets is acceptable in concrete frame construction.

  4. The tables are based on the following maximum construction loads:
    • Workmen and equipment = 100kg/m2
    • Mounding of concrete = 300kg/m2 over an area of 1.6 x 1.6m and zero over the remainder.
    • S tacking of material on BONDEK® sheets before placement of concrete only = 100kg/m2

  5. LYSAGHT BONDEK® sheets are readily available, custom-cut, in any length from 600mm up to 19,500mm (length tolerance +0, -10mm). Maximum and minimum lengths apply. Please contact your local service centre for details.

  6. No loads from stacked materials after pour are allowed until the concrete has set.

  7. The sheets shall not be end spliced or jointed.

  8. Ponding dead load - the additional concrete due to ponding of the concrete from the sheeting deflection has been included.

  9. Supports shall be effectively rigid and strong to support construction loads.

  10. The sheeting shall not have cantilever portions.

  11. Wet concrete deflection of BONDEK® = L/240 or L/130, where L is the distance between centres of props or permanent supports.

  12. The information contained in the publication is intended for guidance only. This information to be used only in conjunction with a consulting structural engineer.

  13. Further details can be sought from the BlueScope Lysaght publication BONDEK® Design & Construction Manual or consulting Steel Direct on 1800 641 417.

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are trademarks of BlueScope Steel Limited
Australian Made Lysaght