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
|Step 2: Place props if required
|Step 3: Trim LYSAGHT BONDEK® sheets if required and place
|Step 4: Fix LYSAGHT BONDEK® sheets to steel beams if required
|Step 5: Fix steel edgeform
|Step 6: Cut penetration
|Step 7: Place reinforcement and post tensioning if required
|Step 7a: Post Tensioning Hold Down Clip
|Step 8: Place concrete
|Step 9: Allow slab to cure and remove props
|Step 10: Install services and ceilings with LYSAGHT BONDEK® accessories
- 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.
- The tables shall be used for normal density concrete (2400kg/m3).
- 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
- 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
- S tacking of material on BONDEK® sheets
before placement of concrete only = 100kg/m2
- 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.
- No loads from stacked materials after pour are allowed until the concrete has
- The sheets shall not be end spliced or jointed.
- Ponding dead load - the additional concrete due to ponding of the concrete
from the sheeting deflection has been included.
- Supports shall be effectively rigid and strong to support construction loads.
- The sheeting shall not have cantilever portions.
- Wet concrete deflection of BONDEK® = L/240 or L/130, where L is the distance
between centres of props or permanent supports.
- The information contained in the publication is intended for guidance only.
This information to be used only in conjunction with a consulting structural
- Further details can be sought from the BlueScope Lysaght publication
BONDEK® Design & Construction Manual or consulting Steel Direct on
1800 641 417.