Reefer floor repair

The cracks/holes at the bottom of the channel is due to corrosion.
Those can be temporary repaired by 1"X3" aluminum. Drill the the plate, stringer and crossmember, use self tapping to bolt back down. Need to do it to each of the channels the length of the crossmember.
Do that to each crossmember where it's corroded/starting to.

The holes are big enough, is the stringer wood or composite?
If they're wood, anything done will just be temporary, if composite it may last a while.

 

Tabs in the channels, weld the tops.

Floors come in a little over 2' wide sections and then welded together. Look at the seams on your floor. Another section laid over the old one will never fit tight without cutting all the seams and re-welding.

Putting anything higher than the floor just gives a forklift something to hit and tear out.

 

Not as much as i used to. I'm lucky to have a good trailer place real close.

 

Always used argon.

The floor has to be tight to the stringers so you still may have to screw it down. Nothing special need to do that.