# Design Moment for Polygonal Cross-Section Shearwalls

**ICONS**

* H _{w} =* Total curtain height measured from the top of the foundation or the ground floor slab

*Critical curtain height*

**H**_{cr}=*Length of the curtain or tie-beam curtain piece in plan*

**l**_{w}=**7.6.6. Design Bending Moments and Shear Forces**

**7.6.6.1** - For **walls meeting the** H _{w} / l _{w} > 2.0 condition, bending moments based on the design shall be taken as a constant value along the critical wall height determined in accordance with **7.6.2.2** , equal to the bending moment calculated at the wall base according to **Section 4** . Above the section where the critical wall height ends , a linear moment diagram parallel to the line joining the moments calculated at the base and top of the wall according to **Section 4** will be applied **(Figure 7.12)** . **In** buildings with basements that meet the conditions given in **3.3.1.1** , the constant curtain moment will be taken into account along the critical wall height defined in **7.6.2.2** .

Design bending moments in all sections of walls with H _{w} / l _{w} ≤ 2.0 shall be taken equal to bending moments calculated according to **Section 4** .

**7.6.6.2** - In the case of H _{w} / l _{w} > 2.0, the moments of bearing capacity of the wall sections at each floor must meet the condition given by **Equation (7.3)** for the columns in the strong direction of the wall . Otherwise, the earthquake calculation will be repeated by increasing the curtain dimensions and / or reinforcements.