Timber floor rating with steel plate

[1437n6]

There is a timber floor (3" thick by 6" wide)spanning 8' between support beams. There is 1" plank flooring running transverse to the 3" timbers. How do I calculate the available floor loading, accounting for the 1" transverse plank flooring.

I have the same question for a 3"x6" timber floor with 1/4" steel plating on top. What is the available floor loading.

I can calculate the available loading of the 3"x6" timber, but not sure how the plank floor and steel plate distributes the load and should be calculated. I know this definitely increases the available loading.

 

[hokie66]

There would be a benefit only if the steel plate is sufficiently fastened to the timber to achieve composite action. I doubt that is the case. With the planks, the shrinkage gaps between the boards would preclude composite action. Consider the 1x planks and the steel plate to be just a wearing surface.

 

[Ron]

As hokie66 notes, don't consider composite action. Just take the reactions from the plate and apply to the joists.

 

[msquared48]

Thirded...

Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask

 

[1437n6]

Sounds good. It makes the calculations easy too. Thanks!

 

[MiketheEngineer]

Fourth'd ??

 

[efsinc]

ill take the fifth