Composite material construction

The invention relates to a composite material construction. In particular, the invention relates to a method of joining pieces of material so as to form a composite material and to a composite material made by such a method primarily for use in aircraft construction. A method of constructing a composite material which comprises a laminate of plies comprising a warp dominated ply and a weft dominated ply, includes arranging first and second pieces of material alongside each other with a recess being defined at least partly by a warp dominated ply so that parts thereof form a lap joint which is received at least partly in a recess formed in or by a warp dominated or other ply, and arranging at least part of one of said first and second pieces of material in said recess so as to form lap joint with part of the other of the first and second pieces of material . The parts of said first and second pieces of material include weft dominated plies