About Lesson
Riprap
- stone pitching is done with vegetation inter-planted between the stones; usually on a gully floor
- It is made from a variety of rock types, commonly granite or limestones, and occasionally concrete rubble from buildings.
- Used to stabilize streambanks, provide in-stream channel stability, and provide a stable outlet.
- Absorb and deflect the energy of waves before they reach the defended structure.
- The vegetation like nilkanda, asura, saiiwan, simali etc are grown.
- Riprap stone can be built at any time, but planting should be done before monsoon.
- Slopes on which riprap is used to stabilize streambanks should be no steeper than 1.5:1.
