Abstract: The present invention is a tension braced dome structure comprised of a top ridge having at least one upper ridge radial member and at least one circumferential member which is concentric with an edge member; wherein the upper ridge radial member and the circumferential member are capable of carrying compressive and tensile loading; and further comprising a tensegrity grid having at least one diagonal member, and at least one lower compression member, and at least one lower cicumferential member; wherein said diagonal member extends between the upper ridge radial member and the compression member; and still further having a means for resolving internal stresses as an integral part of the top ridge; and a means for adjusting tension in the diagonal member.

Abstract: A unit guide wear plate which aligns the movement of a brake beam end guide within the side frame of a railroad car truck so that the brake shoes can provide the maximum amount of force against the wheels when stopping the railroad car.