Drone footage of Italian EQ in Pescara del Tronto
Drone footage of Italian EQ in Pescara del Tronto
(OP)
https://www.youtube.com/watch?v=rG7TpAwpgDo
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RE: Drone footage of Italian EQ in Pescara del Tronto
I guess some people do not listen to structural engineers either.
They just listen to the money.
Unreinforced masonry is a problem there, here, and everywhere earthquakes happen.
Seems like some things never change...
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
I seems at first glance to me that it would be impossible to upgrade these old villages to current seismic resistance without spending enormous amounts of money and essentially destroying the aesthetics/value of these old structures.
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RE: Drone footage of Italian EQ in Pescara del Tronto
Steel frames do not integrat3e well with a stone age, stone based architecture.
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
Keith Cress
kcress - http://www.flaminsystems.com
RE: Drone footage of Italian EQ in Pescara del Tronto
These walls more than likely failed from seismic forces normal to their large face (their weakest plane), not in line with the wall, and the angles you propose, or any edge members for that matter, would do little to no good to resist that scenario.
The entire wall would literally have to be stitched together via some structural means that would, in all likelihood, ruin any architecture of the area.
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
Quite a problem really. Hard/esthetic/expensive/slow/disruptive/unpredictive need.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Drone footage of Italian EQ in Pescara del Tronto
When centuries old mortar is factored in, it's amazing that they hadn't had a problem until now.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
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RE: Drone footage of Italian EQ in Pescara del Tronto
I think they have.
Earthquakes in the 5.5 to 6.5 magnitude range are a relatively common occurrence along the Appenines. Assisi caught it in 1997 and again in 2009.
With death tolls in the low hundreds each time, a frequency of occurrence measured in years rather than decades, a history that goes back forever and no clear way to blame anybody for the quakes themselves, we're right in the middle of the territory where people resign themselves to the risk and just get on with life.
Outsiders may have a different view: I was taking photos from the top of a quite squinty tower in the the middle of Bologna a week before the quake happened and as a tourist from the UK the thought definitely crossed my mind that if the ground started shaking while we were up there, it was going to be an exciting ride.
A.
RE: Drone footage of Italian EQ in Pescara del Tronto
Also, remember that the energy released (vertical and horozontal movement) decreases as one moves from the epicenter.
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
Some of the churches I was admiring a couple of weeks back are bold structures and a long way off the straight and level, yet date back to the 12th Century (and are still there this week).
A
RE: Drone footage of Italian EQ in Pescara del Tronto
Must have been a lot of vertical movement...
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
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RE: Drone footage of Italian EQ in Pescara del Tronto
The 1997 quake was all over international news, partly because of this video, while the 2009 event was even more deadly than the latest one.
A.
RE: Drone footage of Italian EQ in Pescara del Tronto
The through the wall rosettes you saw in Frisco were placed at the floor and roof diaphragm levels to keep the floor and roof joists from separating from the brick walls.
The walls still see forces normal to them and have to span vertically between the floors and roof in a seismic event.
Mike McCann, PE, SE (WA)
RE: Drone footage of Italian EQ in Pescara del Tronto
http://www.upi.com/Top_News/World-News/2016/08/28/...
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RE: Drone footage of Italian EQ in Pescara del Tronto
The link to the article above seems to suggest prosecution of either engineers, builders, or the mafia that perhaps affected the quality.
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