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Old 04-18-2019, 11:57 PM   #1
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Structure and frame of a skoolie

Please excuse my primitive drawing. The attached picture shows the cabin of a school bus (in yellow, of course), the steel "slats" that support the floor (in blue), the steel frame that runs from front to back (in red) and the tires (in black). Is it correct that the cabin is mounted to the floor slats, and the floor slats are mounted to the frame? or is the cabin mounted in a different way, directly to the frame?
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Old 04-19-2019, 12:25 AM   #2
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Originally Posted by pengyou View Post
Please excuse my primitive drawing. The attached picture shows the cabin of a school bus (in yellow, of course), the steel "slats" that support the floor (in blue), the steel frame that runs from front to back (in red) and the tires (in black). Is it correct that the cabin is mounted to the floor slats, and the floor slats are mounted to the frame? or is the cabin mounted in a different way, directly to the frame?

You got it mostly right.


In general:
In a full size school bus (not a cut-away), the floor is made up of "C" shaped pieces that are welded together to form the I-beam structure that runs across the bus. The floor is attached o the chassis rails at set intervals along the rails. The ribs of the structure are attached to the floor on the outside of the floor and extend down below the floor line. The chair rail attaches to the ribs and the floor and is part of the structure. The skin of the body is attached to the ribs on the outside.
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Old 04-19-2019, 12:41 AM   #3
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Originally Posted by pengyou View Post
Please excuse my primitive drawing. The attached picture shows the cabin of a school bus (in yellow, of course), the steel "slats" that support the floor (in blue), the steel frame that runs from front to back (in red) and the tires (in black). Is it correct that the cabin is mounted to the floor slats, and the floor slats are mounted to the frame? or is the cabin mounted in a different way, directly to the frame?
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Old 04-19-2019, 12:42 AM   #4
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Originally Posted by pengyou View Post
Please excuse my primitive drawing. The attached picture shows the cabin of a school bus (in yellow, of course), the steel "slats" that support the floor (in blue), the steel frame that runs from front to back (in red) and the tires (in black). Is it correct that the cabin is mounted to the floor slats, and the floor slats are mounted to the frame? or is the cabin mounted in a different way, directly to the frame?
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Old 04-19-2019, 01:18 AM   #5
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I enjoy watching those videos every time!
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Old 04-19-2019, 01:21 AM   #6
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Are the red beams on the outside of the flooring what you call the seat rails?
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Old 04-19-2019, 01:34 AM   #7
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Are the red beams on the outside of the flooring what you call the seat rails?
The seat rails are the point to which the seats are attached to the wall.
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Old 04-19-2019, 06:22 AM   #8
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Are the red beams on the outside of the flooring what you call the seat rails?
Do you mean the red beams from your drawing? The red things in your drawing are the chassis rails (part of the truck frame), and the blue thing is the floor of the bus body. The bus body floor is clamped on top of the chassis rails.

The chair rails make up the base of the body walls, and are attached to the outside edge of the floor.
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Old 04-19-2019, 06:26 AM   #9
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I enjoy watching those videos every time!
It's my exact bus (down to the number of seats) being built, which is extra-cool. I had absolutely no idea what was going on with the floor of my bus until I watched this video, and then it was all completely clear. It also explained a few mysteries, like why there's a pointless black screw in every other channel just above the window.
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Old 04-19-2019, 09:14 AM   #10
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Do you mean the red beams from your drawing? The red things in your drawing are the chassis rails (part of the truck frame), and the blue thing is the floor of the bus body. The bus body floor is clamped on top of the chassis rails.

The chair rails make up the base of the body walls, and are attached to the outside edge of the floor.
No, the red beams in the video...that are attached to the body walls...they are probably the chair rails?
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