<div dir="auto"><div class="gmail_extra" dir="auto"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="quoted-text">Why the need for beams spaced out from the walls?<br></div>
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Bill<br> </div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">Old fashioned simple beam design. IIRC a cantilever of 1/3 the span is best use of material. So 1/3 cantilever either end theoretically - by simple structure design - require least depth truss. If supported at ends, it would have higher bending moments.</div><div dir="auto"><br></div><div dir="auto">It's been too long since grad school so someone else here should be able to run circles around my "engineering". But I do same for stage lifts - jacks at fifth points - and the manufacturers agree.</div><div dir="auto"><br></div><div dir="auto"> </div><div class="gmail_extra" dir="auto"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="elided-text">
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