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D. Eurocode 2 2004 Beam Design Brief dialog

The EC2:2004 Beam Design Brief has the following tabs for setting out the design parameters:

General tab

SettingDescription
Minimum covers Set the cover to the top, bottom and sides of the beams (in mm).
Aggregate Size Specify the maximum size of aggregate used in the concrete mix (in mm).
Concrete Grade Either select the strength either from the list of available grades in the pull-down list or by defining the strength, fck (in MPa).
Envelope The beams will be designed to the forces from the envelope selected from the pull-down list. Load Envelopes are added using the Define Envelope dialog.
Divide Beam Set the minimum number of segments that each member should be divided into for calculating the reinforcement.

Main Reinforcement tab

SettingDescription
Top Bar Criteria Set the Minimum and Maximum allowable bar sizes to be used on the top of the beams.   

The Min gap defines the spacing (in mm) between the top 2 layers.

Bottom Bar Criteria 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 value and set the bending dimensions to be used with that strength.

Click the Bending Dimensions… button to open the Bending Dimensions dialog, which is used to specify bending dimensions for each bar size.

Select the Class of the Main Bar from the pull-down list.

Shear Reinforcement tab

SettingDescription
Design Shear For Select whether or not to include for the shear forces within the width of the column (or support) by selecting either Center Line of Support or Column Face (support).
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 if the links are to be detailed 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 value (in N/mm2) and set the bending dimensions to be used with that strength.

Click the Bending Dimensions… button to open the Bending Dimensions dialog, which is used to specify bending dimensions for each bar size.

National Annex tab

Used to select a Eurocode 2 National Annex, if necessary, and open a dialog for editing National Annex parameters.

SettingDescription
Country Sets the country for which you want to use the National Annex. Select EC2 without Annex to use the EC2 code with no national annex changes or additions or to specify custom national annex values.
Edit button

Opens a dialog for editing national annex values. The dialog opened is dependant on the selected Country option.

  • UK National Annex - Opens the dialog box, which is used editing EC2 values as directed by the UK National Annex.
  • EC2 without Annex - Opens the dialog box, which is used to specify general National Annex values.