# Footing Load \[SPIG]

Surface loads on footings can be defined using the parameters below.

## Footing Load

**Footing:** Specify the footing to which the load will be applied.

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

**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.

**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" %}
Although **Fz** is applied in the direction of gravity (positive values for **Fz** will correspond to the downward direction, as with gravity), **Mz** will have a positive direction relative to the **+Z** axis or, in other words, in the upward direction.

**The Directions of Forces** For footings with a rotation parameter defined as a value other than zero, the directions of the applied loads are adjusted accordingly. Refer to the figures provided below for further clarification on the directions of positive forces and moments. ![image-20250122-154029.png](https://openbrim.atlassian.net/wiki/download/attachments/2348777478/image-20250122-154029.png?api=v2) ![image-20250122-154125.png](https://openbrim.atlassian.net/wiki/download/attachments/2348777478/image-20250122-154125.png?api=v2) ![image-20241214-115521.png](https://openbrim.atlassian.net/wiki/download/attachments/2348777478/image-20241214-115521.png?api=v2) ![image-20241214-115614.png](https://openbrim.atlassian.net/wiki/download/attachments/2348777478/image-20241214-115614.png?api=v2)
{% endhint %}


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