Well, get a load of this.
The ribs are not directly attached to the floor of the bus.
The ribs are riveted to the lower interior wall / seat rail section which is attacked to the floor lightly with screws.
I was shocked to rip the outer skin off and find about 1/16-1/8th of an inch between the bottom of the rib and floor of the bus.
I pictured some sort of bracket, or socket that held the ribs in place.
Plus a ton of rust flakes inside of the former wall cavities.
Check out the pictures.
Now, what I plan to do is continue removing the skin. Once it is exposed completely, I will clean up the areas immediately around the ribs. Weld small L brackets from the ribs to the floor to add some structural support.
Once, I have brought my naked bus to work and blasted the rust off with the gas power washer. I will return and wire wheel target areas and add a horizontal support beam between each rib to give the replacement skin surface area to mount too in accordance with the lift measurements.
So, basically I plan to create boxes using the ribs and the new mid beam to help support the structure and mounting of the new skin. Compartmentalizing my support structure.
I was very surprised to see the lack of contact between the ribs and the floor.
What do you guys think?