First, a state space formulation of the problem, based on the assumption of linear elastic behavior for both the existing frame and the external dissipative structures, is presented in general terms.
The other option -- replacement of just the window while leaving the existing frame in place -- is more common, less expensive and easier to accomplish.
Successively, the performance of the two proposed external passive structures, is evaluated and compared with that of the bare existing frame, by considering important engineering demand parameters (EDPs) such as interstorey drifts, absolute accelerations and shear actions resisted by the frame and by external systems.
Additionally, Motionflow 120Hz technology creates 60 unique frames between each of the existing 60 frames, doubling the frames displayed per second, further improving images for fast action sports and other programming.
A methodology for assessing the seismic capacity of existing frames in terms of energy is proposed.
It can thus be concluded that, under moderate and high magnitude earthquakes, the damage is concentrated in the added dampers and the response of the existing RC framed structure (bare frame) is chiefly elastic.
This paper proposes a method for the seismic retrofitting of existing frames by adding hysteretic energy dissipating devices (EDDs).
The evaluation of the shear strength contributed by retrofit materials is presented in Appendix 4. To investigate the seismic performance of the existing concrete frame buildings constructed during the 1980s in Korea (AIK 1982), a low compressive strength of concrete (( f^{prime}_{c} approx 18,{text{MPa}} )) and yield strength (f y ≈ 300 MPa) of steel re-bars were used.
Outside doors, sliding doors, etc…Using Carpet End Caps in these areas - just put the track in place in front of the existing door frame.
