# Girder Load \[PIG]

## Girder Load

Girder loads can be defined based on the selected girder, construction stage, applied flange, and magnitudes in terms of forces and moments.

**Girders**: Select the girders to which the load will be applied.

**Stage:** Choose the stage at which to apply the load.

**Applied Flange \[Top/Bottom]:** Specify the flange as either the top or bottom using this parameter.

**Fx :** Force in the longitudinal direction along the PGL.

**Fy :** Force in the direction perpendicular to the PGL.

**Fz (Gravity):** Force in the vertical direction. A positive value indicates a load in the global -Z or gravity direction. For usual loads (wearing surface loads - stay-in-place formwork loads), the user should input positive values.

**Mx :** Moment in the longitudinal direction along the PGL.

**My :** Moment in the direction perpendicular to the PGL.

**Mz :** Moment in the vertical direction.

{% hint style="info" %}
**The Directions of Forces** See the figures provided below for further clarification on the directions of positive forces and moments. The figures below are taken from the start station of the bridge model. ![image-20241210-131027.png](https://openbrim.atlassian.net/wiki/download/attachments/2348482678/image-20241210-131027.png?api=v2) ![image-20241210-131125.png](https://openbrim.atlassian.net/wiki/download/attachments/2348482678/image-20241210-131125.png?api=v2) ![image-20241210-131234.png](https://openbrim.atlassian.net/wiki/download/attachments/2348482678/image-20241210-131234.png?api=v2) ![image-20241210-131848.png](https://openbrim.atlassian.net/wiki/download/attachments/2348482678/image-20241210-131848.png?api=v2)
{% endhint %}


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