Riprap

Riprap, as rip rap, rip-rap, shot rock, rock armour or rubble, is rock or other material used to armor shorelines, streambeds, bridge abutments, pilings and other shoreline structures against scour and water or ice erosion. It is made from a variety of rock types, commonly granite or limestone, and occasionally concrete rubble from building and paving demolition. It can be used on any waterway or water containment where there is potential for water erosion.

Underwater, rock armour caps submerged tunnels to protect against accidental anchor strikes or sinking debris.

References

Ciria-CUR (2007) - Rock Manual - The use of rock in hydraulic engineering.
N.W.H. Allsop (2002) - Breakwaters, coastal structures and coastlines.
US Dept. of Transportation (2004) - Trail Construction and Maintenance Notebook

External links

v t e Coastal management
Management	Accretion Coastal engineering Coastal management Integrated coastal zone management Managed retreat Submersion
Hard engineering	A-Jacks Accropode Akmon Artificial reef Breachway Breakwater Cliff stabilization Dolos Flood wall Floodgate Gabion Groyne Jetty Levee Hard engineering Honeycomb sea wall Hudson's equation KOLOS Mole Pier Revetment Riprap Seawall Tetrapod Training wall Wharf Xbloc
Soft engineering	Beach nourishment Beach drainage Dynamic revetment Living shorelines Sand dune stabilization Soft engineering
Related topics	Beach evolution Coastal erosion Geotechnical engineering Land reclamation Longshore transport Modern recession of beaches Stream restoration