T.2 Specifying concrete design parameters

Concrete design parameters allow you to directly specify some of the terms used in the equations for concrete member design.

For example, the grade of concrete or the maximum size of reinforcing bar you want to use.

Note: This tutorial uses the 2011 edition of the American Concrete Institute 318 specification for design (ACI 318-11). Details on the code parameters can be found in D1.F.3 Design Parameters.

The STAAD input file commands generated are:

UNIT MMS NEWTON
CODE ACI
CLB 30 ALL
CLS 25 ALL
CLT 25 ALL
FC 25 ALL
FYMAIN 415 ALL
TRACK 1 ALL

Set the force units as Newton and the length units as Millimeter.
Refer to T.2 Changing the input units of length for details.
On the Analysis and Design ribbon tab, select Concrete in the Design Commands gallery.

The Concrete Design - Whole Structure dialog opens.
On the Concrete Design - Whole Structure dialog, select ACI 318 2011 from the Current Code drop-down list.
Click Define Parameters in the Concrete Design dialog.
The Design Parameters dialog opens.
Specify the clear cover on bottom:
1. Select the CLB parameter tab.
2. Type as 30 (mm) in the parameter value field.
3. Click Add.

Repeat step 5 to define the remaining parameters:

Parameter	Value
CLS	25
CLT	25
FC	25
FYMAIN	415
TRACK	1 (select option from list)

Click Close.
The Concrete Design dialog displays the parameters in the concrete design command.
Assign these parameters to all the members in the model:
1. Select the first unassigned parameter in the Concrete Design | Whole Structure dialog.
2. Select the Assign to View option.
3. Click Assign.
  A message dialog opens confirming you want to make this assignment.
4. Click Yes.
5. Repeat steps 8a though 8d for each unassigned parameter to assign them to all members.

Tip: Remember to save your work by either click Save on the File ribbon tab , the Save tool, or pressing <CTRL+S>.