Ultimate limit state - Shear

The parameters in the Shear group control the calculation of shear reinforcement.

1D structures - beams

Shear coefficients

Coefficient in equation (4.18)

Gives the influence of axial force on shear resistance of concrete without shear reinforcement.

ENV 1992-1-1: Art.4.3.2.3. (1)

Default value = 0.15

Max. value for coefficient ro_1

Maximum value of an effective reinforcement percentage.

ENV 1992-1-1: Art.4.3.2.3. (1)

Default value = 0.02

Shear percentage

Concrete class

The concrete classes that together with the steel class determine the minimum shear reinforcement ratio.

ENV 1992-1-1: Tab.5.5

Default value = C40/50 to C50/60

Steel grade

The steel class that together with the concrete classes determine the minimum shear reinforcement ratio.

ENV 1992-1-1: Tab.5.5

Default value = S400

Result value of min. percentage

Minimum shear reinforcement ratio.

ENV 1992-1-1: Tab.5.5

Default value = 0.0016

Method for calculation of shear reinforcement

Standard

Choose this option to calculate shear reinforcement according to the standard method.

ENV 1992-1-1: Art. 4.3.2.4.3

Variable strut inclination

Choose this option to calculate shear reinforcement according to the variable strut inclination method.

ENV 1992-1-1: Art. 4.3.2.4.4

Variable strut inclination method

Minimum angle of the concrete strut with the longitudinal axis	The lower limiting value for the angle between the concrete strut and the longitudinal axis.
Maximum angle of the concrete strut with the longitudinal axis	The upper limiting value for the angle between the concrete strut and the longitudinal axis.

2D structures - slabs

Shear mode

The calculation employs the checking of capability considering a fixed inclination of fictitious concrete strut (fixed strut inclination method).

At most 50% of traction reinforcement is anchored before the support	See ENV 1992-1-1 : Art. 4.3.2.3.(1)
More than 50% of traction reinforcement is anchored before the support	See ENV 1992-1-1 : Art. 4.3.2.3.(1). This is the default setting.

Shear strut inclination control

variable strut inclination method

(4.3.2.4.4)

See ENV 1992-1-1 : Art. 4.3.2.4.4.

fixed strut inclination method

(4.3.2.4.3)

See ENV 1992-1-1 : Art. 4.3.2.4.3.

Shear effect upon the net reinforcement

Shear reinforcement in a net reinforcement may have an effect on the results ("shear effect"). These parameters control the way this effect is taken into account.

no shear effect upon the net reinforcement

(4.3.2.4.4 (6) -> 5.4.2)

See ENV 1992-1-1 : Art. 4.3.2.4.4(6) -> 5.4.2

shear effect will be considered in SR2 only

(4.3.2.4.4 (5))

A special check. The shear effect is taken into account in shear area 2 only.

shear effect will be generally be considered

(4.3.2.4.4 (5))

See ENV 1992-1-1 : 4.3.2.4.3.(5)