Design of base plate by Roark's Formula 2

[caiomarcon]

Hi everyone,

I am design a steel base plate, and I usually use the Roark's Formula (TABLE 11.4 Formulas for flat plates with straight boundaries and constant thickness). But in this tables, there is cases for Poisson v=0,3 (steel) and v=0,2 (concrete).
How can I do to use the tables with v=0,2 for material steel? Is there any change in the formulas with v=0,2 to use with v=0,3?

 

[MotorCity]

Maybe I am not seeing it, but for the case of uniform pressure over a baseplate, how do you get a baseplate simply supported on 3 sides and fixed on 1 side? Are you not grouting below the baseplate to obtain full contact bearing below the plate?

 

[JGard1985]

Agree, equation is for plate (steel). How does concrete possion ratio come into it

Why not AISC Steel Design Manual to design Chhapete 14 to determine required thickness of steel baseplate. Design of Welded Structures by Blodgett has some good examples too



Jeff
Pipe Stress Analysis Engineer

http://www.xceed-eng.com

 

[caiomarcon]

the aisc method is indicated to base plates without stiffeners. Usually, when there is stiffeners in base plate, we can use the roark's formulas to design the base plate.

 

[JGard1985]

I apologize, but I'm not seeing it. Can you provide a sketch as to how do you get a baseplate simply supported on 3 sides and fixed on 1 side?

Jeff
Pipe Stress Analysis Engineer

http://www.xceed-eng.com

 

[caiomarcon]

My question is about poisson in tables of book Roark's Formula

 

[robyengIT]

here the theory : You can contact me through my WEB site (it is free from ads, fee, nothing to pay)

http://www.pisaniengineer.com

 

[caiomarcon]

Thank you so much robyengIT... Bares is a very good book!

These equations is applicable to Roark's Formula too?