The Complete Message:

For curtains Mdev> = Mo / 3 condition could not be met in (X / Y) direction.


In the article 4.3.2.4 of TBDY 2018 , two conditions defined in (a) and (b) below are specified in any direction in buildings with reinforced concrete curtain and / or steel braced frame with DTS = 1, 1a, 2, 2a .

(a)   a single pitch bearing system or steel receives base stall torque of the bracing frame M DEV , then the total floor tilting moment occurring in seismic loads for the entire building in the 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.

One of these conditions are not satisfied, it is in line with the Structural Behavior Factor R instead of (4/5) R will be considered.

Possible solutions:

  • Providing the above mentioned (a) by adding a sufficient amount of curtain / curtain group or by reducing the overturning moment value of a single curtain by changing the vertical carrier system.

  • (a) If it cannot be provided, check the "(4/5) R apply" option in Analysis Settings / TBDY Options Tab and repeat the analysis in the requested direction.