Since the building is DTS = 1 and all earthquake loads are covered by reinforced concrete walls, it is necessary to control the curtain overturn in both directions. This control is the stage that allows the final decision to be made on the R coefficient. If the conditions given below are not met, (4/5) R must be used instead of the selected R. These two conditions are as follows:
(a) The carrier system in a single screen or steel receives base stall torque of the bracing frame M DEV total floor tilting moment occurring in seismic loads for the entire building in that direction M o ' s third is no greater than.
(b) Construction each side axles located screen / screen or steel braced frame / receives base overturning moment of the frames M DEV or M DEV 'the sum of all, that the direction in total floor tilting moment occurring in seismic loads for the entire building M o ' s 1 It will not be less than / 6.
This control is done automatically by taking R = 1 by the program.
Since it is necessary to make an analysis to see the results of this control, it is necessary to make an analysis after selecting R and D and pay attention to the warnings in the curtain tipping controls section in the earthquake regulation report.
In the report visuals given above for the X direction, it is seen that (4/5) R is taken instead of R for the X direction, since item (a) does not provide. The same is true for the Y direction.
As a result of the controls in the building, it is necessary to use (4/5) R in both directions, so the relevant boxes next to the R coefficients in the analysis settings should be marked and re-analyzed. Post marking program (4/5) uses R in accounts and reports that the transaction is correct by showing that it is used in tipping reports.
