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re: Part of the new Hard Rock Hotel collapses (NOLA) 3 dead, Cranes Down-ish

Posted on 10/13/19 at 5:17 pm to
Posted by Napoleon
Kenna
Member since Dec 2007
73094 posts
Posted on 10/13/19 at 5:17 pm to
I think that is a strong idea.
A lot of people on the scene ate saying that.
What say you from Alabama?

Posted by Nephropidae
Brentwood
Member since Nov 2018
2723 posts
Posted on 10/13/19 at 5:38 pm to
quote:

But someone is in CYA mode right now and you posted it.

quote:

MrLarson


Working overly hard against this dumpster idea; you seem to be the one laying some cover. You own a rigging/crane co?
Posted by MrLarson
Member since Oct 2014
34984 posts
Posted on 10/13/19 at 5:51 pm to
quote:

What say you from Alabama?


Show me the dumpster that caused all of this.
Posted by Placebeaux
Bobby Fischer Fan Club President
Member since Jun 2008
51852 posts
Posted on 10/14/19 at 6:32 am to
quote:

Similar principle to 9/11.

A fire shouldn't destroy a building. Nor should heavy lateral impact. The combination of both caused a very heavy load to fall and that caused a fast pancaking of the buildings.


Naw and two totally different buildings
Posted by bluedragonfly
Baton Rouge
Member since Oct 2015
11 posts
Posted on 10/14/19 at 7:43 am to
Would the Inspector have to sign off on the concrete before the shoring is removed?
Posted by CP3forMVP
Member since Nov 2010
15763 posts
Posted on 10/14/19 at 8:20 am to
Have a buddy whose brother was in the building when it collapsed. He was a subcontractor and his company had documentation about severe structural issues for the last 6 months.

He said the crews were on 15 minute break when it happened, if it had happened 10 minutes later you'd have 100+ deaths.
This post was edited on 10/14/19 at 8:27 am
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
8071 posts
Posted on 10/14/19 at 8:41 am to
quote:

Would the Inspector have to sign off on the concrete before the shoring is removed?



On the jobs I worked the specs dictated what percentage of design compressive strength was needed before shores were removed. The 7 day break of the cores was used to verify that and get the OK from the structural engineer.
Posted by TunaTigers
Nola
Member since Dec 2007
5366 posts
Posted on 10/14/19 at 9:44 am to
Also heard that most of the workers were on the ground for break at the time of the collapse.
Posted by d6k
New Orleans
Member since Dec 2005
1495 posts
Posted on 10/14/19 at 9:52 am to
quote:

Show me the dumpster that caused all of this


In the OP video, you can see something like a dumpster or material container falling from above.
Posted by GeeOH
Louisiana
Member since Dec 2013
13376 posts
Posted on 10/14/19 at 10:10 am to
Zoom in the video and watch the horizontal boom of the crane. It shakes up and down.
Some load was on it and "came off"

Or, the roof supporting a load still connected to the crane collapsed from under it.

Tons of possibilities, but crane def had load and was jerked up and down somehow
Posted by dfintlyHmmrd
Jigga City
Member since Dec 2016
1408 posts
Posted on 10/14/19 at 10:13 am to
quote:

Why would you delete those posts if your son could help determine who is at fault?


Because his kid very may well have to testify, he's not saying his kid won't help, but a public forum isn't the place to do it.

He also said that his kid observed walls bulging prior to the collapse, so his kid also has the potential to bear some fault in this it sounds like.
Posted by boxcarbarney
Above all things, be a man
Member since Jul 2007
25467 posts
Posted on 10/14/19 at 10:24 am to
I looked at the plans for this job when it first went out to bid. Unless there was a redesign, those upper floors were concrete on metal pan deck which generally do not need temporary bracing/shoring.

So, if there was some shoring that was removed, I would guess it was not for the pan decks. Something else is going on here.
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
8071 posts
Posted on 10/14/19 at 11:07 am to
Concrete on metal pan deck can also require shores. The wet concrete is heavier and this helps the concrete cure without the steel in a deflected state.

I can’t speak to this project but shores are common even with pan decks. It depends on the design.

ETA: The root cause will be unknown for a while. Whether it was design issues or construction defects or sequencing obviously something went horribly wrong for this kind of collapse to take place.
This post was edited on 10/14/19 at 11:11 am
Posted by Dale Doubak
Somewhere
Member since Jan 2012
6000 posts
Posted on 10/14/19 at 11:14 am to
Who was the design engineer
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
8071 posts
Posted on 10/14/19 at 11:17 am to
quote:


Who was the design engineer


For the Hard Rock in N.O.?

I have no idea.
Posted by Sid in Lakeshore
Member since Oct 2008
41956 posts
Posted on 10/14/19 at 11:31 am to
quote:

Who was the design engineer For the Hard Rock in N.O.?


Design Team:
Architect:
HBSA II Architects

LINK
Posted by TxWadingFool
Middle Coast
Member since Sep 2014
5330 posts
Posted on 10/14/19 at 11:45 am to
Supposedly from a Superintendent on the job, sounds like there were lots of changes and redesigns throughout the job and corners were cut. When you start down the rabbit hole of what could have lead to this there is plenty of blame to go around and for the ones saying the city may end up having a role in it I'd say your probably right.

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This post was edited on 10/14/19 at 11:46 am
Posted by LSUFanHouston
NOLA
Member since Jul 2009
40141 posts
Posted on 10/14/19 at 11:49 am to
"It was brought to Citadel... they said everything had been designed and approved by engineers".

I'm sure it was... but if you have a dip in the slab... don't you need to fix it or investigate it? Or is that not something big enough to eventually cause a collapse?
Posted by back9Tiger
Island Coconut Salesman
Member since Nov 2005
17507 posts
Posted on 10/14/19 at 11:50 am to
Yikes!
Posted by teke184
Zachary, LA
Member since Jan 2007
103093 posts
Posted on 10/14/19 at 11:52 am to
Why am I having flashbacks to a bunch of penny-wise pound-foolish decisions made on the new NOLA airport terminal?


Mistakes were clearly made here and it is a question of how many someones are liable as part of that.
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