That’s been a thing for a while. Some malls would put distance measurements throughout the building. I remember an outlet mall that went under because the only visitors were people (mainly seniors) who walked around inside, but didn’t buy anything (or not enough to keep the mall open).
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I thought it was cucumbers. This year.
Jeez, the factory was supposed to dip those balls in lawyer-repellant.
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The state-of-the-art is adding it to the plastic masterbatch. Makes it less sensitive to wear and you don’t have to reapply it during the thing’s lifetime.
You can also use active pest control, e.g. poisoned injury claim forms. They bring them to their nests and spread the poison there.
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The general consensus among those educated in static structures is that the heat stress lowered the yield strength and caused the collapse. Here’s a nice graph depicting how stress affects strength of a material.
Heat only lowers the curve. You really only need to reach some level of plastic deformation in order to facilitate a full scale failure. Especially in complex repetitive structures. We knew this and it was widely covered in the architecture courses I was attending at the time. I literally went to my structures class immediately after the collapse of the towers.
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Happens also on boilers. Stop guarding the water level for a while, let it fall, and voila - tubes get exposed, overheat, creep, fail. Kaboom, and what the rapid spontaneous disassembly did not damage with flying steep bits it boiled with released steam.
Old railway steam engines sometimes explodes at a hilltop. Or, more accurately, just past it; as the locomotive went downhill, the water in the boiler flowed, the surface exposed the top end of the boiler, and noisy trouble happened. Boom!, hisss.
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Ohmygosh, I’m totally gonna steal that as a euphemism for “explosion”. “Noisy trouble”
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