Jib Crane Extension 3

• Aug 9, 2021

• #2

desertfox

Mechanical

Dec 29, 2002

5,545

Hi dik

Any chance of a sketch to see exactly what you intend?

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

 

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• Aug 9, 2021

• Thread starter
• #3

dik

Structural

Apr 13, 2001

25,681

Something Like...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

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• Aug 9, 2021

1
• #4

BJI

Mechanical

Feb 3, 2017

318

I would use something like that for combined loads on stacks or vertical vessels. References would be ASME STS-1 CL 4.4.1 & 4.4.2 or ASME VIII-2 Part 4.4.12. Otherwise, any pressure vessel design manual will have methods for design of skirt supports and combined loadings on vertical vessels.

 

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• Aug 10, 2021

• #5

desertfox

Mechanical

Dec 29, 2002

5,545

Hi dik

I have nothing to hand but this link might help:-

https://www.swiftcalcs.com/inline_w...48ac-b910-f6315ce4b661/JIB_CRANE_CALCULATIONS

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

 

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• Aug 10, 2021

1
• #6

HTURKAK

Structural

Jul 22, 2017

2,889

Hi DIK,

For this case, LTB is not critical.. You are expected to check for bending , shear , torsion etc..

You may look API RECOMMENDED PRACTICE 2A-WSD (RP 2A-WSD) for the allowable stresses for the cylindrical members.

 

 https://files.engineering.com/getfile.aspx?folder=d336cf3c-4810-46ea-a1dd-0f209316a3c3&file=API_ALLOWABLE_STRESSES_FOR_CYLINDRICAL_MEMBERS.pdf

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• Aug 10, 2021

1
• #7

robyengIT

Mechanical

Dec 20, 2013

894

Roark's :
1 - ch 12 formulas for short columns + table 12.1

2 - ch 13 shells of revolution, pressure vessels + table 13.1

 

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• Aug 10, 2021

• Thread starter
• #8

dik

Structural

Apr 13, 2001

25,681

Thanks...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

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• Aug 12, 2021

• #9

MJCronin

Mechanical

Apr 9, 2001

5,087

dik..

I believe that it would be reasonable for you to post your final calculations on this thread

Completion and distribution of your work would help others and enrich eng-tips in the long run

Best Regards

MJC

MJCronin
Sr. Process Engineer

 

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• Aug 12, 2021

• Thread starter
• #10

dik

Structural

Apr 13, 2001

25,681

Done...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

 https://files.engineering.com/getfile.aspx?folder=f173448f-75ae-40ba-9b35-5ce366109c80&file=Jib_Crane_Extension.sm

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• Aug 12, 2021

• Thread starter
• #11

dik

Structural

Apr 13, 2001

25,681

and *.pdf...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

 https://files.engineering.com/getfile.aspx?folder=ed5091d0-e2d8-471d-a715-d25277750157&file=Jib_Crane_Extension.pdf

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• Aug 12, 2021

• Thread starter
• #12

dik

Structural

Apr 13, 2001

25,681

@hturkak: Based on your API reference, I found an equivalent ISO document in LRFD... thanks, again.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

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