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

Posted on 10/15/19 at 9:17 pm to
Posted by MrLSU
Yellowstone, Val d'isere
Member since Jan 2004
28941 posts
Posted on 10/15/19 at 9:17 pm to
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
76020 posts
Posted on 10/15/19 at 9:21 pm to
Id say this rules out the pool theory
Posted by Martini
Near Athens
Member since Mar 2005
49583 posts
Posted on 10/15/19 at 9:24 pm to
What’s with all the cmu’s? I don’t get what they are doing.

I guess the roof plaza is all block walls but I thought I saw a bunch on other floors like a chain wall.
This post was edited on 10/15/19 at 9:27 pm
Posted by jamboybarry
Member since Feb 2011
33131 posts
Posted on 10/15/19 at 9:26 pm to
That’s pretty common for rooftop mechanical or elevator equipment enclosures. You can see the penthouse steel on that level
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
76020 posts
Posted on 10/15/19 at 9:28 pm to
You mean blocks?


I have not idea. Saw a lot of pictures of the inspections yesterday that had lots of block walls.
Posted by Martini
Near Athens
Member since Mar 2005
49583 posts
Posted on 10/15/19 at 9:29 pm to
Concrete masonry units.

Blocks.
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
8071 posts
Posted on 10/15/19 at 9:33 pm to
Probably mechanical equipment room or extension of the elevator shaft.

Regardless, palletized lightweight CMU are not that heavy. I venture to guess it would be doubtful to overload a properly designed structure with palletized lightweight CMU. Sand and gravel block? Maybe?

The construction loads shown in these pics are a fraction of what the structure should be designed to handle in its final state.
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
76020 posts
Posted on 10/15/19 at 9:34 pm to
Yeah, it seemed they may have been used for fire walls and such. Didn't look at the elevations on the south side, but it seemed that they were used to some extent there on the lower floors.
Posted by BigPerm30
Member since Aug 2011
30747 posts
Posted on 10/15/19 at 9:42 pm to
They are pretty common in public areas. They use them for demising knee walls, planter walls, etc. If they were on the roof, I’m assuming they are using them for parapet walls around the parameter of the building.
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
58272 posts
Posted on 10/15/19 at 9:47 pm to
quote:

Are you really comparing a tower crane that’s 1,000 feet in the air to this one which is about 200 feet?
yes I am. You said you have never seen one deconstructed. It happens all the time.
quote:

I like debating with intelligent people but you’re just ignorant and belligerent when you can’t admit you’re wrong.
ok brah. Go back to your cad work.
Posted by RazorBroncs
Possesses the largest
Member since Sep 2013
15748 posts
Posted on 10/15/19 at 9:51 pm to

I don't know much about this stuff (I've learned a lot from this thread), but I've been watching this since the moment it happened.

Relevant curiosity here: how do they take down the jib and counterweight of a crane when a job like this is completed? Then do they lift out the sections of the vertical mast one by one from inside the structure?

Just something I thought about and became curious to know throughout this thread.
Posted by BigPerm30
Member since Aug 2011
30747 posts
Posted on 10/15/19 at 9:52 pm to
quote:

yes I am. You said you have never seen one deconstructed. It happens all the time.


And I still haven’t seen one dismantled without an assist crane. You didn’t prove shite. You said they couldn’t reach this tower crane with a mobile crane and you were fricking dead wrong. So get out with that bull shite. Leave high rise construction to people who have done it their whole career.
Posted by MrLSU
Yellowstone, Val d'isere
Member since Jan 2004
28941 posts
Posted on 10/15/19 at 9:53 pm to
I'm surprised no one has mentioned the huge steel beam that is suspended in the air by the compromised crane. This does need any wind pushing and the only way to get that down is by allowing it collapse.
Posted by Rox
Member since Oct 2010
33333 posts
Posted on 10/15/19 at 9:54 pm to
SIAP

I found this pic on twitter that someone took of the building the day before the collapse. (She tweeted it to Margaret Orr)

Twitter Link

quote:

Laura in Wonderland Autocorrect hates me!
@LauraBergerol
Going to make myself a toddy and eat. Bought myself lots of yummy things to tempt my appetite. Back in a bit.

In the mean time, look at this photo of #NOLA Hard Rock Cafe construction! I can't believe the size of this crane. Plus, the sky is gorgeous, isn't it, Margaret?



This post was edited on 10/15/19 at 9:55 pm
Posted by Martini
Near Athens
Member since Mar 2005
49583 posts
Posted on 10/15/19 at 9:59 pm to
quote:

Probably mechanical equipment room or extension of the elevator shaft.

Regardless, palletized lightweight CMU are not that heavy. I venture to guess it would be doubtful to overload a properly designed structure with palletized lightweight CMU. Sand and gravel block? Maybe?

The construction loads shown in these pics are a fraction of what the structure should be designed to handle in its final state.



No it’s not the load it’s just an unusual design. Even elevator shafts use a lot of structural metal studs and shaft liner Sheetrock. And typical curtain wall parapet would be metal studs as well. Just a strange mix of design I guess in a structural steel building.

ETA what is at top right? I can’t figure that out-lower roof, looks like the Tpo roof system is in place but what is the dark area?

And I see the cmu around the pool.
This post was edited on 10/15/19 at 10:03 pm
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
58272 posts
Posted on 10/15/19 at 10:01 pm to
quote:

Leave high rise construction to people who have done it their whole career.


you sound like a union man. Lol. With an attitude. How big are your truck nuts?
Posted by SATNIGHTS
Red Stick
Member since Jan 2008
2383 posts
Posted on 10/15/19 at 10:02 pm to
There are some interesting videos out there of damaged crane removal.

LINK
This post was edited on 10/15/19 at 10:02 pm
Posted by AndyCBR
Baton Rouge, LA
Member since Nov 2012
8071 posts
Posted on 10/15/19 at 10:03 pm to
quote:

And I still haven’t seen one dismantled without an assist crane. You didn’t prove shite. You said they couldn’t reach this tower crane with a mobile crane and you were fricking dead wrong. So get out with that bull shite. Leave high rise construction to people who have done it their whole career.



When they are this tall the assist crane leaves once the slewing unit, boom, and counterweights are placed on top of the lower mast at a lower height.

From there, the climbing section raises the crane with hydraulics 20 feet (typically) at a time and new sections of the tower are inserted.

This how they make lifts where heights are impossible to lift form the ground or not feasible due to limitations on the ground (room).


Posted by thermal9221
Youngsville
Member since Feb 2005
14576 posts
Posted on 10/15/19 at 10:03 pm to
The more photos I see the more I believe that there was a major faulty design or craftsmanship that is the culprit. Trigged by a small something (maybe a dumpster falling).
Posted by CarRamrod
Spurbury, VT
Member since Dec 2006
58272 posts
Posted on 10/15/19 at 10:05 pm to
The CMUs were for a curb on the roof. For what idk?
This post was edited on 10/15/19 at 10:05 pm
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