Steel Plate Thickness Design

[gmf]

I am looking for design examples (specifically for selecting plate thickness) regarding steel plates subject to bending. Does anyone know of a website or reference material that may help?

I have been taught to find the moment applied to the plate and corresponding Smin (Smin = M/0.9*fy). Using the Smin I find the thickness based on the geometry of a rectangular section as follows:

S = (b*d^2) ; where, d= plate thickness= t, b= effective width
6

Therefore, t^2 = 6*Smin
b

However, what is the appropriate method for determining the effective width of the plate (for example, a 2m wide plate spanning 610mm.)

Thank you.

gmf

 

[dbuzz]

You can't go past "Roark's Formulas for Stress and Strain" or Timoshenko's "Theory of Plates and Shells" for reference material. They should be on every structural engineers' bookshelf.

For a uniformly distributed load on a one-way plate, the effective width of the plate will be the actual width. For a point load at mispan on a one-way plate, the effective width will be approximately equal to 60% of the span.

You may find some relevant formulas at

http://www.xcalcs.com.

Make sure you understand the principles behind the spreadhsets rather than blindly populate them with data.

 

[VoyageofDiscovery]

Hi gmf,

I use about 40t, from Troitsky's "Tubular Steel Structures" in section under Bins and Bunkers.

HTH

VOD