# Structural Practices

There are five structural practices that can be applied in SWAT+: 

* Tile drainage: [tiledrain.str](https://swatplus.gitbook.io/io-docs/introduction-1/structural-practices/tiledrain.str) 
* Filterstrip: [filterstrip.str](https://swatplus.gitbook.io/io-docs/introduction-1/structural-practices/filterstrip.str) 
* Grassed waterway: [grassedww.str](https://swatplus.gitbook.io/io-docs/introduction-1/structural-practices/grassedww.str) 
* User BMP: [bmpuser.str](https://swatplus.gitbook.io/io-docs/introduction-1/structural-practices/bmpuser.str) 
* Septic system: [septic.str](https://swatplus.gitbook.io/io-docs/introduction-1/structural-practices/septic.str)