Custom Flatbed?

One of the dreams for my truck is to build a custom flatbed. Something with a steel frame and 2x6 planks for the platform.

Has anybody done something like this?

I'm looking for dimensions and measurements for where to place supports and the connection points to the frame.

Thanks!

 

https://www.tacomaworld.com/threads/2011-flatbed-build.342771/

 

Alright, so I've decided to make a flatbed of my own. I have a couple questions though for anybody that has done something similar.

Here is a link to my current CAD in OnShape, the measurements are not exact yet, I'll have to remove the bed to get the spacing perfect, but this is pretty close.
https://cad.onshape.com/documents/d...037acc4f5fad24afe7/e/37d0fb21ed4041e4a59eddef

For those without OnShape, here's a couple pictures:




The square tubing is 2x2x.25'', the side and rear rails are 4x5.4 channel.

The plan is to have the main bed be 2x6 planks, with holes drilled and tapped into the 2x2x.25 steel square tubes below.

Some questions:
Currently, eleven 2x6s will fit exactly inside the bed. Should I add some extra width for fitting? How much? 1/4 inch?

How should I attach the bed to the frame? I'm thinking of maybe welding in some steel at the bottom of the supports with a hole in the center for the bolt, then cutting out the side of the support to allow access for the bolt and wrench, like this:


Thoughts?

 

Check the wood your are going to use- it is probably not a true 6" wide which will give you built in boards spacing that you may want to allow for. I helped a friend with this once, what surprised me is the final height of the bed to allow for articulation of the rear axle.