Abstract: The present invention discloses a construction for flexible intermediate bulk containers which provides additional strength along the upper periphery, to preclude the tearing out of the material when a loaded container is lifted by a single lifting loop. By folding the upper portion of the container over upon itself, two layers of material are provided along the upper periphery, effectively doubling the strength of that portion of the container to which the lifting loops are attached. The second layer of material is extended downwardly along the side of the container at least a distance equal to the length of the lifting loop legs to be attached thereto. The lifting loop web straps are then sewn through the two layers of material, preferably with a series of box stitches.

Abstract: A damping system for attenuating the transverse oscillation of a structure caused by external forces having a countermass attached to the structure by a spring and a coulomb damper. The parameters of the damping system are chosen so that the natural frequency of the damping system matches the natural frequency of oscillation of the structure.