A plurality of metalogs form a freestanding wall or fence, or structure comprising walls, upper floors whenever applicable and/or roof of a building. Each metalog has an axis. A stiffener extends through a set of aligned holes in the metalogs at right angles to the axes. One or more additional stiffeners may similarly extend through one or more additional sets of aligned holes in the same metalogs. The stiffeners function to resist forces acting in a direction parallel to the axes of the metalogs and therefore enhance the stability of the structure and obviate otherwise required X-bracing.