# Floor Beam \[CSB]

Floor beams can be modeled using this section of the workflow.

## Floor Beam

**Girders:** This parameter can be used to specify the girders for which the floor beam will be generated.

**Station:** This parameter can be used to specify the station where the floor beam will be generated.

**Skew Angle:** The skew angle for the floor beam can be specified using this parameter.

**Section Data:**

* **Transverse Offset (from PGL):** The variations of the sections in the transverse direction can be defined using this parameter. The start of a section can be defined with respect to PGL.
* **Section:** The section for the floor beam can be assigned using this parameter. A section previously defined under **Properties > Sections** can be used, or a section can be imported.
* **Variation (with next segment) \[None/Linear/Parabolic (concave up)/Parabolic (concave down)/Circular]:** For varying sections of a floor beam, this parameter definition must be made. Otherwise, when set to "None," the beams will be generated as a custom section beam.
* **Radius:** For circular variations, the radius can be defined using this parameter.

## Overhang

**Left Overhang \[No overhang / To deck edge / Input overhang length]:** To define the left overhang, either by the object deck, user input, or with the option "No overhang," this parameter can be used.

**Left Overhang Length:** If the left overhang is defined using the "Input overhang length" option, this parameter can be used to specify the length of the overhang on the left side when looking upstation along PGL.

**Right Overhang \[No overhang / To deck edge / Input overhang length]:** To define the right overhang, either by the object deck, user input, or with the option "No overhang," this parameter can be used.

**Right Overhang Length:** If the right overhang is defined using the "Input overhang length" option, this parameter can be used to specify the length of the overhang on the right side when looking upstation along PGL.

**Top Elevation Offset from Alignment:** Vertical offset of the floor beam's top surface from the alignment elevation. Positive raises the beam.

## FEM Settings

**FEA Model Type \[Beam/Two Flange Beams + Web Shell]:** Selects the analytical representation. **Beam** models the floor beam as a single frame element. **Two Flange Beams + Web Shell** splits it into two flange frame elements connected by a web-shell mesh, giving more accurate composite behavior.

**Interior Girders Connection \[Deck-Top Flange/Girder Bottom Flange/Top and Bottom Flange]:** Controls how interior girders are linked to the floor beam in the FE model.

**Left Exterior Girder Connection \[Deck-Top Flange/Girder Bottom Flange/Top and Bottom Flange]:** Controls how the left exterior girder connects to the floor beam in the FE model.

**Right Exterior Girder Connection \[Deck-Top Flange/Girder Bottom Flange/Top and Bottom Flange]:** Controls how the right exterior girder connects to the floor beam in the FE model.

**Rigid Section (Interior Girders):** Section used for the rigid links between interior girders and the floor beam.

**Rigid Section (Left Exterior Girder):** Section used for the rigid link between the left exterior girder and the floor beam.

**Rigid Section (Right Exterior Girder):** Section used for the rigid link between the right exterior girder and the floor beam.

**Moment Release Left Exterior Girder \[Fixed/Free]:** Sets the moment release between the floor beam and the left exterior girder. **Fixed** transfers moments; **Free** releases them.

**Moment Release Right Exterior Girder \[Fixed/Free]:** Sets the moment release between the floor beam and the right exterior girder.

**Supports (Substructure):** Substructure support objects connected to this floor beam.

**Truss Joint Connection:** Truss joint objects connected to this floor beam.

**Support Beams:** Support-beam objects that reference this floor beam (Read-only).


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