Bending of a beam

Source? Because that seems counter intuitive.

Andy

Reply to
Vir Campestris
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It builds in some pre-stress.

Reply to
Roger Mills

No, it doesn't.

When you remove the support under the centre the beam will sag ever-so-slightly under its own weight, then more when it's loaded. If you want to pre-stress it you should load it before the cement is completely set.

That's why in pre-stressed concrete the reinforcing bars are put under tension.

Andy

Reply to
Vir Campestris

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