What thickness steel for plating frames?

[Eagle]

A few years ago my brother's Nissan pickup broke. The frame started to fracture right at the junction between the rear of the cab and the front of the box. He took it to a nearby welding shop that has developed sort of a specialty in repairing broken pickup frames.

 

I'm curious -- what thickness or gauge steel would you use to plate a frame to repair such damage?

[TurboedMJ]

Myself not being a structural engineer of any kind, at least 3/8"(?) of an inch, or the thickness of the original frame, depending how thick it is. Imo, over built is underated

[ghetdjc320]

I’d expect maybe 3/16. The strength will be in the design vs just material thickness. Original frame rails were probably only 1/8 material or thinner, so adding a thicker metal and welding it will only help to an extend. Adding a sleeve and some nice fillet joints with some boxed tubing will be a solid repair.