The Complete Message:
The curtain thickness cannot be less than 250 mm. (TBDY 2018 7.6.1.2)
TBDY 2018 7.6.1.1 (a) in Item 7.6.1.3 't Except as exceptions, rectangular and U, L and T as the curtains of the body of the wall thickness times the height of 1/16 from and will be less than 250 mm, a condition .
You receive this warning because the curtain thickness is less than 250 mm and the special condition given in 7.6.1.3 is not met. If 7.6.1.3 is provided, the wall thickness can be 200 mm.
7.6.1.3 - In buildings whose structural system consists of walls, if both conditions given in Equation (7.14) are met, the wall thickness shall not be less than 1/20 and 200 mm of the height of the highest floor in the building.
Σ A g / Σ A p ≥ 0.002 and V t / Σ A g ≤ 0.5 f ctd (7.14)
Solution:
Give the size of the curtain with the name and fold as at least 250 mm.
Choose curtains, curtains
Enter the properties.
In the general settings tab, increase the curtain width and click the OK button.
Alternatively, the conditions given in 7.6.1.3 can be met. Your Ag can be enlarged.
Icons
ΣAg = The sum of the cross-sectional areas of the structural system elements working as a curtain parallel to the earthquake direction considered at any floor.
ΣAp = Sum of plan areas of all floors of the building
Vt = Total earthquake load (base shear force) acting on the building according to TBDY 2018 Section 4
fctd = Design tensile strength of concrete