Finding all 10 pieces of scrap in the camp The Pipes on Mad Max can be a bit of a pain in the backside!
One piece of scrap is hidden quite well down in a corner under the first War Crier in the first large combat zone.
Unless you actively go down into this area (which you tend not to as nothing appears to be there) you will not see the Jimmy Bar icon appear.
Go down to the green container and bust it open :)
See the following video...