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To: Tom Tetroxide

The dome construction is a nightmare; it will never become commonplace unless they figure out how to do it ‘3D printed’ and, more importantly, I question the structure’s strength against a tornado’s wind shear and projectile debris.

I had a better idea over 30 years ago. It’s interesting that no one else has come up with it.


37 posted on 03/25/2023 8:26:21 AM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
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To: logi_cal869

Structural strength aspects become almost incidental in dealing with withstanding a tornado. Instead, the issues are direct impact from debris and construction installation details often between dissimilar materials.

In the 70s the military tested missile containment structures for debris by firing a muzzle loaded telephone pole out of a howitzer. Designing for that is different than the psi for ultimate wind load. The wall or room membrane itself and any substrate becomes more critical.

In the second instance the little items like where the roof edges hit rake or gutter and how secure a corner trim or window edge are what is critical to keep the roof or wall from peeling open.

I should add for those outside these fields that wind pressure is one thing but often the critical item becomes wind uplift. A roof becomes like an airplane wing and the uplift of the wind passing over the roof is a force that often pulls it apart without initially defeating the underlying structural supports. On metal roofs this is often as simple as a tripling of the screw placements in edge zones.


38 posted on 03/25/2023 8:42:40 AM PDT by KC Burke (Diversity, Inclusion and Equity is not another way to spell GOD but it is a way to spell DIE.)
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