# characterization.characterize_foot()

Characterize the soil at the toe from the required toe resistance.

Usage

[Source](https://github.com/lornearnold/driven-pile/blob/main/src/driven_pile/characterization.py#L136-L174)

``` python
characterization.characterize_foot(
    foot,
    q_needed,
    felt_arrival,
    options,
)
```

## Parameters

`foot: Foot`  
The foot the toe has just reached; updated in place.

`q_needed: float`  
Unit toe resistance the target demands after subtracting the shaft, ksf.

`felt_arrival: float`  
Blows the foot felt before the toe arrived.

`options: ModelOptions`