# characterization.triggering_state()

Blow count, cyclic stress and resistance, and cycles to liquefaction.

Usage

[Source](https://github.com/lornearnold/driven-pile/blob/main/src/driven_pile/characterization.py#L58-L80)

``` python
characterization.triggering_state(
    phi,
    sigma_v0,
    fines,
    options,
)
```

## Parameters

`phi: float or ndarray`  
Friction angle, deg.

`sigma_v0: float`  
Static vertical effective stress, ksf.

`fines: float`  
Fines content, percent.

`options: ModelOptions`  

## Returns

`(n160, csr, crr15, nl)`  
Each a float or ndarray matching `phi`.