# RC Section

This command allows the user to construct an RCSection2d object, which is an encapsulated fiber representation of a rectangular reinforced concrete section with core and confined regions of concrete and single top and bottom layers of reinforcement appropriate for plane frame analysis.

```tcl section RCSection2d $secTag $coreTag $coverTag $steelTag $d $b $cover $Atop $Abot $Aside $Nfcore $Nfcover $Nfs ```

secTag

unique section tag

coreTag

tag of uniaxialMaterial assigned to each fiber in the core region

coverTag

tag of uniaxialMaterial assigned to each fiber in the cover region

steelTag

tag of uniaxialMaterial assigned to each reinforcing bar

d

section depth

b

section width

cover

cover depth (assumed uniform around perimeter)

Atop

area of reinforcing bars in top layer

Abot

area of reinforcing bars in bottom layer

Aside

area of reinforcing bars on intermediate layers

Nfcore

number of fibers through the core depth

Nfcover

number of fibers through the cover depth

Nfs

number of bars on the top and bottom rows of reinforcement (Nfs-2 bars will be placed on the side rows)

For more general reinforced concrete section definitions, use the Fiber Section command.


Code Developed by: Michael H. Scott, Oregon State University