STAAD.Pro Help

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.

SettingDescription
Frame Type Select the type of lateral load resisting system in which the column(s) associated with this brief are used.
Column Type

Column element types, different types of reinforcement will affect the construction requirements.

SettingDescription
Frame Col General columns in a regular frame
Transfer Col General columns in a transfer frame
Bot Frm Columns at the base of a regular frame
Bot Trans Columns at the base of a transfer frame
Top Trans Columns at the top of a transfer frame
Corner Corner Columns of a regular frame
Side Side Columns of a regular frame
Middle Internal Columns of a regular frame
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.

SettingDescription
Concrete the definition of concrete strength. Aggregate size can be ignored.
Longitudinal bars, stirrups define the type and size of reinforcement.
SettingDescription
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.

SettingDescription
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.

SettingDescription
Available list Contains all primary load cases and load combinations in the STAAD.Pro input file.
Selected list

Load cases and combinations the results of which will be used for the column design when this brief is used in a Design Group.

Tool icon Description
> Adds the load case(s) selected in the Available list to the Selected list.
>> Adds all load cases from the Available list to the Selected list.
< Removes the selected load case(s) from the Selected list.
<< Removes all load case(s) from the Selected list.
Note: By default, no load cases or combinations are selected.