# Shearwall Design Shear Strength Report

The **adequacy of** walls with high ductility level is **checked by comparing** the design shear forces, V _{e} , found in accordance with the conditions given in **TBDY 7.6.6.3** , with the shear strength of the wall section, V _{r} , described in **TBDY 7.6.7.1** . The section (Control column) related to **TBDY 7.6.7.1 of the** report shown below will be explained.

A _{ch} gross cross-sectional area of the solid wall or each curtain segment in the tie-beam curtain

f _{ctd} , the design tensile strength of concrete

f _{ck} , characteristic compressive strength of concrete

ρ _{sh} , volume ratio of wall horizontal web reinforcement

f _{ywd} , design yield strength of wall transverse reinforcement

The shear strength of the wall sections, V _{r} , is calculated by **TBDY Equation 7.17** .

The Design Shear Force, V _{e} of the **walls** found by **TBDY 7.6.6.3 must meet** the conditions given in **TBDY Equation 7.18** .

The V _{e} value shown in the report and under the "Control" column is the design shear force value **calculated** using **TBDY 7.6.6.3** . V _{r} value is the shear strength of the wall section given in **TBDY Equation 7.17** . V _{eMax} value is the limit values given in **TBDY Equation 7.18** . If the curtain with gaps (tie-beam curtain) is V _{eMax} = 0.65A _{ch} (f _{ck} ) ^{1/2} , if the curtain without gap is V _{eMax} = 0.85A _{ch} (f _{ck} ) ^{1/2} .

If there is a (*) sign next to the curtain names under the curtain column in the report [ *for example P103 (*)* ], it means the curtain with space (tie beam). If there is no sign next to the curtain names, it means the curtain without spaces.

If the design shear force, V _{e} value, shear strength of the shear sections are smaller than V _{r} value and V _{eMax} value, shear safety of the shear is provided.

**Next Topic**