Design of Stiffener Plate

[joengineering]

Please see attachment.

I am trying to pick up a concrete wall with a continuous plate as shown in the image. I have designed that plate as cantilevered. But I am also going to weld stiffener plate as shown for stability at a certain spacing. My question is, is this stiffener plate design for any load? I have designed the plate to work by its self, so I do not know if the stiffener plate is till designed. If it is, for what loading?

JO

Thank You

 

[KootK]

This will behave like a shelf angle for brick. The wall will tend to arch from bolt to bolt. As such, it's a good idea to put your stiffeners near your bolts and assign them a commensurate tributary load. It's not conservative to treat the bent plate as a uniformly loaded cantilever unless your bolts are quite close together.

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[joengineering]

I looked at shelf angle for brick example, they are very helpful thanks.
Thank You

 

[joengineering]

If I had stiffeners, how would I design the bend plate for bending to determine spacing of anchors?

JO

 

[KootK]

How long is the supported wall? It's existing rather than new, right?

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[joengineering]

It is a new wall. Planning to space anchors at 24" cc. Thinking 3/8 plate with stiffeners at 24.

 

[KootK]

The wall won't be cast in place will it? Precast?

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[joengineering]

It is precast

 

[KootK]

I'd recommend discrete clip angles rather than a continuous bent plate then. I'll sketch up an idea for you tomorrow morning with regard to the force in the stiffeners. Thanks for the info.

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[joengineering]

Thanks

 

[Trenno]

+1 for the clip angles. We used a similar detail but for some roof steel.

 

[KootK]

This is what I had in mind Joe:

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[joengineering]

Kootk,

Using clip looks like a better idea. Even the analysis seems simpler. Thanks for the help.

JO