About internal floating roof foot calculation

[Han018]

Hello,

We have a calculation made while the internal floating roof is on its feet, but I wonder what the proportion of the value at the end should be.
Is there an answer about this issue in API650 or any other standard?

Thank you in advance for your help

 

[LittleInch]

Eh?

What calculation?

The last part of that sentence makes no sense at all.

What "issue"?

No doubt you know what your point is, but I'm afraid I don't from the minimal amount ofmjnformation supplied.

 

[Han018]

Eh?

What calculation?

The last part of that sentence makes no sense at all.

What "issue"?

No doubt you know what your point is, but I'm afraid I don't from the minimal amount ofmjnformation supplied.

I would like to ask, is there a rule specified in API650 to calculate the weight per foot in IFR and compare the calculated weight with the strength of the foot in IFR?

 

[LittleInch]

Yes. It's called not exceeding the strength of the material.

What do you mean by "strength of the foot?" Clearly her eis a force per foot from the weight of the roof which needs to be resisted by the foot and floor. Such forces need to be within the strength of both in order not to fail.

I am still struggling to understand your question.

 

[HTURKAK]

is there a rule specified in API650 to calculate the weight per foot in IFR and compare the calculated weight with the strength of the foot in IFR?

I read this post three times and still i am not sure that i got your point.
I will suggest you to look API 650 Appendix H Internal Floating Roofs.
For the landed condition, the roof shall be capable to support a uniform live load of 12.5 psf if not automatic drains are provided, and
5 psf if automatic drains are provided and point load of at least two men walking anywhere on the roof. One applied load of
500 lbf over 1 ft2 applied anywhere on the roof addresses two men walking...

 

[JStephen]

See H.4.2.3 for allowable stresses of the parts.
Allowable bearing in the soil below the leg- I don't think is addressed in API-650.

 

[HTURKAK]

I would like to ask, is there a rule specified in API650 to calculate the weight per foot in IFR and compare the calculated weight with the strength of the foot in IFR?

I guess you are asking the design loads for the legs . If so, you can calculate the support reactions using tributary areas or better adopt FEM .