Options in the dialog are used for:
- Modeling supports at places where a column or a wall adjoins an object. Parameters defined in this dialog are used to calculate the required reinforcement areas of RC elements.
- Defining the equivalent elasticity of a support.
Clicking Advanced in the Support definition dialog, displays the following dialog (the example for a nodal support). The Advanced button is available for nodal and linear supports, but not for planar supports.
Depending on the support type, you can define the following:
- A support that is defined in a node. This is the default type of support.
- A support that is defined by specifying column dimensions (see: Reduction of values near supports):
- Rectangular column - Specify the width and height of the transversal column cross-section (dimensions b and h) for nodal supports.
- Circular column - Specify the diameter d of the transversal column cross-section for nodal supports.
- A support defined by specifying wall dimensions using wall width b. In addition to the Wall option, there is also a list with other wall types (brick and concrete). The list is available after selecting the Wall option. A wall type is considered only when designing plate and shell reinforcements using reinforcing bars or wire fabrics. A wall does not affect the calculation parameters in the model for linear supports.
When the Equivalent elasticity of support option is selected, you can calculate the equivalent elasticity of supports based on the properties and the geometry of columns (for nodal supports) or walls (for linear supports).
-
Evaluation of the equivalent elasticity for columns
When the Equivalent elasticity of support option is selected, the following parameters that are needed for calculations become available:
- The column height and the method of fixing a column end (fixed, pinned, or roller). If the Column through two stories option is selected, the parameters for the upper and lower columns must be defined.
- The values of Young's modulus and Poisson's ratio. You can load the characteristic values for typical materials from the database by clicking the (...) button.
-
Evaluation of the equivalent elasticity for walls
When the Equivalent elasticity of support option is selected, the following parameters needed that are needed for calculations become available:
- The wall height. If the Wall through two stories option is selected, the parameters for the upper and lower walls must be defined.
- The values of Young's modulus and Poisson's ratio. You can load the characteristic values for typical materials from the database by clicking the (...) button.