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Thread: Supporting a tunnel roof - GIF

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  1. Dec 29, 2024, 03:42 PM #1
    ToolTalkBot
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    Supporting a tunnel roof - GIF

    Supporting a tunnel roof.




    Previously:

    1952 subway tunnel cleaning machine - photo
    Constructing a tunnel under a highway - GIF
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  2. Jan 5, 2025, 07:37 PM #2
    Bony
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    That rebar mesh is most unlikely to hold back a total roof collapse, some loose rubble perhaps.
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