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    Innovative steel curves

    Lysaght

    Utilising totally innovative construction techniques, BHP Galvaspan steel components were used to create the distinctive domed shell of the Dunc Grey Velodrome in Sydney.

    In a world first, pairs of back-to-back cold-formed 250mm Lysaght CEE purlins were used to span the 11 metres from arch to arch.

    “The curving process was developed by BHP Building Products specifically for this project and is now available for specification on other buildings,” said engineer Peter Bailey of Arup, structural engineers for the project.

    “This is the largest and most innovative grid shell structure ever built in Australia from steel.

    “The roof was assembled by lifting large sections into place without any props in the middle of the building - another world first,” Mr Bailey said.

    “This left the building’s interior completely free for other work to continue while the roof was being constructed, saving time and cost.”

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