Rectangular tank maximum available distance with roak's formulas factor

[ryu.changmyong]

Hi concerned person

When I review maxinum available stiffener distance in horizontal direction
of rectanglar tank calculation, I always confuse in appliing factor "α" of roak's formulas
which one is correct at attached sample case.

Kind regards,

Ryu changMyong
wine@pes21.com

https://www.eng-tips.com/

 

[Geoff13]

Roark's is a very large book. Please be specific in your question.
[ul][li]Which Edition are you referencing?[/li]
[li]Which Table is this from?[/li]
[li]Which example within that Table is this?[/li][/ul]

 

[ryu.changmyong]

Hi, Dir
This is little bit different with structure condition of that is fixed side for each connection against side plate of rectangular tank, that's why I confused with this.

Kind regards,
ChangMyong

 

[robyengIT]

see this for help

 

[ryu.changmyong]

Dear Sir,

Let me explain more details about Roak's formulas related Rectangular storage tank,
As you know, Roak's formulas has various condition over fixed, free for each Long side and short side. However, this rectangular is of storage tank has hydro static head and Fixed side is not gived except bottom and top of the end of support stiffener.
So I gave 3 condition as above picture this 3 case comes from for each vendor's strength calculation, what I want know is which is correct among 3 case.


Kind regards,
ChangMyong