Online Help

Material characteristics

Concrete

The material can be selected from the database of strength grades or specified manually by the user. The database contains strength grades according to the table 3.1 of EN 1992-1-1. Following characteristics have to be specified for user defined material:

Automatic determination of f_ctm and E_cm according to the table 3.1 can be used for user defined material. For f_ck lower than or equal to 50MPa, f_ctm is calculated using formula

following formula is used for other cases:

The secant modulus of elasticity of concrete E_cm is calculated using following formula

Where the mean value of concrete cylinder compressive strength f_cm is calculated using following formula

Reinforcement steel

The materail can be selected from the database of strength grades or specified manually by the user. Following characteristics have to be specified for user defined material:

The design values of material characteristics are used during the analysis. The design values are calculated by division of characteristic values (index starts with k) by partial factor for material properties γ_M. Values of γ_M are written in chapter "National annexes". Index of design values starts with d.