Carbon composite laminated structure

Method of constructing a two ply laminated friction disc from a pair of refurbished worn brake discs comprising providing a first disc layer of carbon composite material which provides a first wear surface and a second disc layer of carbon composite material which provides a second wear surface and arranging said layers in contact with one another with the wear surfaces thereof facing away from each other, each said layer of said disc having an annular wear area and torque transmitting key formations enabling the disc to slide axially but remain rotationally fixed relative to a support structure, forming holes in each of said layers either before or after arranging said layers relative to one another with the holes in the first layer extending through said first wear surface, at least some of said holes being provided at radial positions equal to the inner diameter of the wear area plus more than 50% of the difference between the inner and outer radii within a band covering the middle 80% of the radial width of the annular wear area and with the holes in said second layer extending through said second wear surface and aligned with the holes in the first layer, positioning fastening means to extend through aligned pairs of holes and arranging said fastening means to hold said layers securely together with each said fastening means lying wholly below and spaced from said wear surfaces, with said fastening means comprising rivets of a kind inherently adapted to withstand and in use be subject to tensile loads.