# Dimensional Limits for Columns

**ICONS**

**A _{c }**= Gross cross-section area of the column

**E**= Earthquake effect

**Q**= Live load effect

_{ }**G**= Constant load effect

_{ }**N**Considering the live load reduction coefficients defined in TS 498,

_{dm}=*G*and

*Q are*vertical loads and

*E*earthquake effects. Maximum of axial compressive forces calculated under joint effect

*G*+

*Q*+

*E*

**f**Characteristic cylinder compressive strength of concrete

_{ck}=**7.3.1.1 -** The smallest cross section dimension of rectangular columns shall not be less than 300 mm and circular columns diameter shall not be less than 350 mm.

**7.3.1.2 -** The gross cross-section area of the column, *N *_{dm} , taking into account the live load reduction coefficients defined in TS 498, the joint effect of vertical loads *G* and *Q* and *E* earthquake effect is the maximum of axial pressure forces calculated under *G* + *Q* + *E.* larger, it will satisfy the condition *A *_{c} ≥ *N *_{dm} /(0.40 *f *_{ck} ).

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