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:
fck |
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fctm |
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Ecm |
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Automatic determination of fctm and Ecm according to the table 3.1 can be used for user defined material. For fck lower than or equal to 50MPa, fctm is calculated using formula
following formula is used for other cases:
The secant modulus of elasticity of concrete Ecm is calculated using following formula
Where the mean value of concrete cylinder compressive strength fcm 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:
fyk |
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Es |
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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 γM. Values of γM are written in chapter "National annexes". Index of design values starts with d.