Ultimate limit state - Shear
The parameters in the Shear group control the calculation of shear reinforcement.
1D structures - beams
Shear coefficients
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Max. value for coefficient ro_1 |
Maximum value of an effective longitudinal reinforcement percentage. EN 1992-1-1:2004, art. 6.2.2(1), Gl.(6.2a) Default value = 0.02 |
Angle between the concrete compression struts and beam axis model
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Type of input for theta |
Angle The angle is input. Cotangent Directly the cotangent is input. |
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theta |
Depending on the type of input either requires the input or shows angle theta. |
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cot (theta) |
Depending on the type of input either requires the input or shows cotangents of theta. |
Plain and lightly reinforced concrete members
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Perform check always as plain concrete members (12.6.3, 12.6.4) |
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Coefficient taking into account axial compressive stress
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Automatic calculation according to sigma_cp |
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user input alpha_cw |
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Principal stress
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Check design tensile strength only in compression zone |
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Construction joint
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Take into account cos_alpha for formula 6.25 |
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2D structures
Shear strut inclination control
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variable strut inclination method (4.3.2.4.4) |
Calculates the required shear reinforcement using the standard Variable strut inclination method. EN 1992-1-1:2004, art. 6.2.3 |
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fixed strut inclination method (4.3.2.4.3) |
Choose this option to calculate shear reinforcement according to the non-standard method assuming the constant strut inclination of 45°. |
Shear effect upon the net reinforcement
The Shear force can affect also the net reinforcement (SCIA Engineer introduced the notion of "Shear Effect" for this phenomenon). These parameters control the way this effect is taken into account.
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No Shear Effect considered |
Constructive measures are taken instead of exact calculation. EN 1992-1-1:2004, art. 6.2.2(5) and 9.2.1.3(2) |
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Shear effect considered in SR2/3 |
This is the standard case of Shear Effect: the impact upon the net reinforcement takes place if shear reinforcement is statically required only (Shear Region 2) EN 1992-1-1:2004, Art. 6.2.3(7) |
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Shear Effect considered unconditionally |
This is a non-standard control (e.g. for test or comparison purposes): Shear Effect (see above) is applied also in SR1 (no shear reinforcement required) |
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. See art. 6.2.3. (7)