Navigation:  Concrete Design > RC Design Criteria > RC Column Design Criteria

Click Concrete Design > RC Model Design Criteria > RC Column Design Criteria to open the RC Column Design Criteria table.  

 

 

This table collects design parameters for the concrete column design process.

 

You can create as many RC Column Design Criteria as you need to satisfy the requirements of your design.  Once created, you can assign RC Column Design Criteria to members graphically.

 

Label:  A freeform text descriptor that has meaning to you.

 

X-Sway & Y-Sway:  X-sway and Y-sway flags designate if a member is a part of a sway frame in member strong/weak direction, respectively.  These flags are only used for checking the validity of Kx and Ky values.  For example, if X-sway flag is on and Kx is less than 1.0, the program will give a warning.

 

Lux:  Unbraced length when considering buckling about the strong axis.

 

Luy: Unbraced length when considering buckling about the weak axis.

 

Kx: Effective length factor when considering buckling about the strong axis.

 

Ky: Effective length factor when considering buckling about the weak axis.

 

Tie Legs:  Number of legs per tie.

 

Tie Size: Rebar size used for ties.

 

Cover to Tie: Specifies the clear cover to the tie or spiral reinforcing.

 

Start Bar Size: The bar size that the design process will start with when seeking a solution.  Set this to the smaller size if different bar sizes are allowed in the solution.

 

End Bar Size: The bar size that the design process will end with when seeking a solution.  Set this to the larger size if different bar sizes are allowed in the solution.

 

Bar Layout: See four options below:

 

•All Sides:        Rebar will be placed on all sides

 

•Major Sides:  Rebar will be placed on sides that are parallel to strong axis to resist Mz.  No rebar on sides that are parallel to weak axis except at corners.

 

•Minor Sides:  Rebar will be placed on sides that are parallel to weak axis to resist Mz.  No rebars on sides that are parallel to strong axis except at corners.

 

•Equal Sides:  Rebar placed in equal numbers on all sides.

 

Confinement:  Used to specify whether the column is tied or spirally reinforced.