D. GB50010 Column Design Brief dialog
The GB50010 Column Design Brief dialog has the following tabs for setting out the design parameters:
Frame Information tab
Used to provide seismic lateral load resisting frame information for the portion of the structure containing the column(s) associated with this brief.
|Frame Type||Select the type of lateral load resisting system in which the column(s) associated with this brief are used.|
Column element types, different types of reinforcement will affect the construction requirements.
|Earthquake resistant Grade|| Select the Grade classification for seismic design.
Select None if the component no seismic testing provisions are used for design (i.e., frame is not considered for seismic resistance).
|Earthquake Intensity|| Select the intensity level of the design earthquake.
Select None if no Earthquake is considered (i.e., frame is not considered for seismic resistance).
General Settings tab
Used to provide parameters for concrete strength, main reinforcement, and shear reinforcement in the columns.
|Concrete||the definition of concrete strength. Aggregate size can be ignored.|
|Longitudinal bars, stirrups||define the type and size of reinforcement.|
|Concrete||Select a standard grade of concrete or select the User fcu option to specify a different strength value (in MPa).|
|Aggregate Size||The maximum aggregate size (in mm) used in the concrete mix.|
|Cover||Set the cover used at the column faces (in mm).|
|Main Bars|| Either select a standard grade from the pull-down list or enter the steel yield strength into the User fy field and set the bending dimensions to be used with that strength.
For User fy values, click the Bending Dimensions button to open the Bending Dimensions dialog, which is used to specify bending dimensions for each bar size.
Set the Minimum and Maximum allowable bar sizes to be used.
|Links|| Either select a standard grade from the pull-down list or enter the steel yield strength into the User fyv (in MPa) and set the bending dimensions to be used with that strength by clicking the Bending Dimensions… button (opens the Bending Dimensions dialog).
Select the minimum bar size and number of legs (2, 3, 4, 5,or 6) to be used.
Column Factors tab
Specify column conditions for bracing, effective length, and slenderness.
|Bracing Conditions||Specify whether the columns are braced in the local y-y and/or z-z directions.|
|Effective Length Factors||Specify the effective length factors to be used in the local y-y and z-z directions.|
|Slenderness Limits||This may be set to 1, or calculated by the design.|
|Area provided by starter bars||Specify the area of starter bar steel (in mm2) to ensure that maximum area of steel is not exceeded by the design.|
Member Loadcases tab
Used to select load case results which are used for column design with this brief.