D. GB50010 Beam Design Brief dialog
The GB50010 Beam 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 beam(s) associated with this brief.
|Frame Type||Select the type of lateral load resisting system in which the beam(s) associated with this brief are used.|
|Beam Type||Beam 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).
|Minimum Cover||Set the cover to the top, bottom, and sides of the beams (in mm).|
|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.|
|Envelope||The beams will be designed to the forces from the envelope selected from the pull-down list.|
|Beam division||Set the minimum number of segments that each member should be divided into for calculating the reinforcement (must be at least four).|
Main Reinforcement tab
Used to provided parameters for the longitudinal reinforcing bars.
|Top bar settings||
Set the Minimum and Maximum allowable bar sizes to be used on the top of the beams.
The Min gap defines the spacing (in imm) between the top 2 layers.
|Bottom bar settings||
Set the Minimum and Maximum allowable bar sizes to be used on the bottom of the beams. The link hanger size is used for detailing where no reinforcement bars are required for bending, but bars are required for supporting links.
The Min gap defines the spacing (in mm) between the bottom 2 layers.
|Side Bar Criteria||Set either the minimum bar size to be used or let the program calculate which bars can be used to achieve a suitable spacing on deep beams.|
|Main Bar Type||
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.
Shear Reinforcement tab
Used to provide parameters for shear reinforcement (e.g., transverse stirrups).
Select the option to design the shear reinforcement up to the center line of the column (support) or column face (edge of support). Note that the column or support face is defined in the Spans Table.
|Shear Bar Criteria|| Select the minimum bar size and number of legs (2, 3, 4, 5,or 6) to be used and set the minimum spacing (in mm). If the design requires a smaller spacing, then the number of legs will be increased.
Select whether the links should be scheduled as Closed or Open.
|Shear Bar Type||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).|