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    <p>Not so - a spar is loaded in bending, which means tension on one
      side, compression on the other. In all structures, it is the
      compression loads that are critical.</p>
    <p>Marc<br>
    </p>
    <div class="moz-cite-prefix">On 6/24/2023 9:19 AM, Alan James via
      Personal_Submersibles wrote:<br>
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      cite="mid:1914097663.4440705.1687569574280@mail.yahoo.com">
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      Marc,
      <div>a wing spa would be mainly under tension, which carbon fibre
        deals with well, & I doubt they would be a solid 5" thick as
        this hull section was.</div>
      <div>Alan<br>
        <br>
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            <div>On Sat, 24 Jun 2023 at 12:11 pm, Marc de Piolenc via
              Personal_Submersibles</div>
            <div><a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> wrote:</div>
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