# One-Way Shear Strength.

Shear strength is calculated automatically

**İnternational Design Codes**

* ACI 318-19 : *One-Way Shear Strength

* TSC 2018 : *TSC One-Way Shear Strength

**Notation in ACI 318-19**

* A_{c-sh }= *area of concrete used to determine shear stress, in

^{2}

*gross area of concrete section, in*

**A**_{g }=^{2}

*web width or diameter of circular section, in.*

**b**_{w }=*distance from extreme compression fiber to centroid of longitudinal tension reinforcement, in.*

**d =***specified compressive strength of concrete, psi*

**f**_{c }^{'}_{ }_{ }=**(**

*square root of specified compressive strength of concrete, psi*

**f**_{c}^{'})^{0.5 }_{ }=*specified yield strength of transverse reinforcement, psi*

**f**_{yt }_{ }=*overall thickness, height, or depth of member, in.*

**h =***factored axial force normal to cross section occurring simultaneously with*

**N**_{u }=*or*

**V**_{u}*; to be taken as positive for compression and negative for tension, lb*

**T**_{u}*center-to-center spacing transverse reinforcement, in*

**s =***nominal shear strength provided by concrete, lb*

**V**_{c }=*nominal shear strength, lb*

**V**_{n }=*nominal shear strength provided by shear reinforcement, lb*

**V**_{s }=*factored shear force at section, lb*

**V**_{u }=*strength reduction factor*

**ϕ =***= modification factor to reflect the reduced mechanical properties of lightweight concrete relative to normal weight concrete of the same compressive strength*

**λ***= factor used to modify shear strength based on the effects of member depth, commonly reffered to as the size effect factor*

**λ**_{s}Nominal one-way shear strength at a section, is calculated by using concrete and transverse reinforcement properties.

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