The solution of lacks in strength and rigidity is required of conventional wooden frame construction. Newly developed bolt with drift-pins increases strength of beam with dovetail joint in above construction. By using dovetail joints, we can use almost similar method to conventional frame erection. Pipe substituted for tenon with drift-pins joins column to beam on account of continuous beam type. Newly developed software for CAD and CAM leads to drawing for precut, quality control and boring by machine under the discussion with structural designer. Test results of full sized joints show that above reinforcement gives above construction required strength in structural design.
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