falsework

/ˈfɔːlswɜːrk/
noun
  1. A temporary structure used to support a building, bridge, or other construction while it is being built, until it can support itself.
    • The workers erected falsework to hold the concrete arch in place.
    • Engineers designed the falsework to withstand heavy loads during construction.
    • Falsework was carefully removed after the bridge deck hardened.
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