Oh great - now we'll have another s 5

[JAE]

Oh great - now we'll have another series of load combinations to consider in the codes - meteor sonic boom forces.
A roof collapsed during the sonic boom in Russia. A wee bit more than the snow load capacity apparently.

Article: Meteor over Russia

 

[rb1957]

i know the article says "sonic boom", but maybe it's the pressure wave from the explosion ?

Quando Omni Flunkus Moritati

 

[msquared48]

Another reaction to the Pope's resignaion...

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[concretemasonry]

Must be a result of global warming.(LOL)

Not anything like the big alien rock that hit Siberia about 100+ years ago. - Huge hole in the ground (deep and over a mile across). All the trees laid down perpendicular to the center and many fires. You can still see the remnants of the disaster.

Dick



Engineer and international traveler interested in construction techniques, problems and proper design.

 

[msquared48]

Makes me think of Sodom and Gomorrah...

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[msquared48]

JAE:

Looks like the probably unreinforced brick wall failed from the blast overpressure, causing the roof to fail.

Makes me wonder if we will get more during the flyby of the asteroid today...

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[dik]

Can you imagine that in Manhattan (sp?)

 

[ACtrafficengr]

dik, no I can't.

All those old brownstones are unreinforced masonry, and all those glass skyscrapers...

<<shudder>>

 

[bridgebuster]

"Must be a result of global warming.(LOL)" - Actually, some idiot news reporter on CNN raised the same question earlier this week.

While we're at it, let's not forget the force effects from lightning strikes. Thanks for the reminder Mike.

 

[hawkaz]

Governing Load Cases:
1.2D + 1.0W + L + .5 (Lr or S or R) + A
or
.9D + 1.0W + A

A = Apocalypse Load
ASCE7-15 will include chapters 32-36 with this apocalypse loading criteria. I also heard that Live load will now need to include the weight of four horsemen.

I think it would be appropriate to design for Ultimate loads only in this case.

 

[MiketheEngineer]

Al Gore did it!!

 

[msquared48]

Will this negatively affect the production of Russian Vodka?

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[FSS]

As long as this new load case is still allowed in allowable stress design then we are fine (unless it lands on us).

 

[Ron]

ASD lives on!

 

[IRstuff]

The meteorite supposedly exploded in midair, so it was explosion boom, not a "sonic" boom. The meteorite supposedly had the kinetic energy equivalent to more than 400 tonnes of TNT.

TTFN
faq731-376

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[msquared48]

First there was Al Galore;

First there was the Norway Spiral;

Next there was the Sumatra Earthquake and Tsunami;

Then we had Fukashima;

Then the lightning struck the Vatican;

Now this.... [flush]

Who's What's Next? ...


I don't care either.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com