Abstract: Methods are disclosed for nondestructive testing and measuring the structural health of prestressed concrete structures, such as slabs, columns, girders, bridges, towers, elevated storage tanks, silos, cooling towers, wind power generation towers, liquefied gas storage tanks, nuclear power containment buildings, and the like. Measurements are made as the structure undergoes tensioning and detensioning operations. By measuring actual movements of cardinal points on the structure, in an absolute three-dimensional coordinate system, and comparing the measurements to a model—as tension on a tendon is changed—a margin of safety is assured. High accuracy measurements are made by electronic distance measurement (EDM) instruments over hundreds of meters, which yield coordinates of cardinal points with an uncertainty of the order of one part per million.

Abstract: Methods are disclosed wherein the structural health of a civil structure, pressure vessel, or the like is measured by electronic distance measurement (EDM) from a plurality of stable locations to a plurality of cardinal points on the structure in a methodical manner. By measuring the coordinates of the cardinal points, the dynamic and long-term static behavior of the structure provide an indication of the health of the structure. Analyses includes: comparison to a Finite Element Model (FEM); comparison to historical data; and modeling based on linearity, hysteresis, symmetry, creep, damping coefficient, and harmonic analysis.

Abstract: Methods are disclosed wherein the structural health of a civil structure, pressure vessel, or the like is measured by electronic distance measurement (EDM) from a plurality of stable locations to a plurality of cardinal points on the structure in a methodical manner. By measuring the coordinates of the cardinal points, the dynamic and long-term static behavior of the structure provide an indication of the health of the structure. Analyses includes: comparison to a Finite Element Model (FEM); comparison to historical data; and modeling based on linearity, hysteresis, symmetry, creep, damping coefficient, and harmonic analysis.

Abstract: A security system for use on a motor vehicle having a manufacturer's electrical ignition system, wherein the security system comprises electronic means for controlling the security system; a sensing means for sensing tampering; at least one warning means; at least one immobilizing means, wherein the electronic means receives electronic sensor signals from the sensing means and sends electronic activation signals to the warning means and to the immobilizing means; potting means disposed upon the electronic means for excluding moisture, heat and vibration from the electronic means; and a remote-control means for remotely controlling the security system, which remote-control means is resistant to scanning-type interference, and wherein the remote-control means further comprises: a receiving means for receiving radio control signals, and a transmitting means for transmitting a multiplicity of radio control signals, wherein said transmitting means further comprises at least: signals for changing the sensitivity of