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GEO5

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Materials, Coefficients, Notation

The following notation for material parameters is used:

f 'c

-

specified compressive strength of concrete

Ec

-

modulus of elasticity of concrete at 28 days

f y

-

lower characteristic yield strength of reinforcing steel

The characteristic compressive strength of concrete is the basic input parameter given by the class of concrete.

The most common notation for geometrical parameters:

b

-

cross-section width

h

-

cross-section depth

d

-

effective depth of cross-section

z

-

lever arm (arm of internal forces)

All computations are carried out according to the theory of limit states.