A loose foundation or an arrangement of broken stone in water or soft terrain used to help prevent erosion The material used for this is known as rap or rapping
n - An assemblage of stones along the banks of a river or stream used to straighten or contain the flow of water
gabions, stones, blocks of concrete or other protective covering material of like nature deposited upon river and stream beds and banks, lake, tidal or other shores to prevent erosion and scour by water flow, wave or other movement
(1) Broken STONES used for REVETMENT, TOE protection for BLUFFS, or structures exposed to WAVE action, foundations, etc (2) Foundation of wall or STONES placed together irregularly (3) (SMP) A layer, facing or protective mound of STONES placed to prevent EROSION, scour or sloughing of a structure or EMBANKMENT; also the STONE so used
{i} pile of broken stones used for foundations (in water or on soft grounds) or embankment; foundation made of broken stones put together loosely; stone wall used as a barrier to break the force of waves; material or stones used for riprap
Broken rock, cobbles, or boulders placed on earth surfaces, such as the face of a dam or the bank of a stream, for protection against the action of water
Large, durable materials (usually rocks; sometimes broken concrete, etc ) used to protect a stream bank or lake shore from erosion; may also refer to the materials used
A layer of large uncoursed stones, broken rock, boulders, precast blocks, bags of cement, or other suitable material generally placed in random fashion on the upstream and downstream faces of embankment dams, stream banks, on a reservoir shore, on the sides of a channel, or other land surfaces to protect them from erosion or scour caused by current, wind, wave, and/or ice action A protective blanket of large loose stones, which are usually placed by machine to achieve a desired configuration Riprap is usually placed by dumping or other mechanical methods but, in some cases, is hand placed It consist of relatively large pieces as distinguished from a gravel blanket Very large riprap is sometimes referred to as "armoring " All four dams at Horsetooth are covered with riprap The riprap will be removed and eventually replaced as part of the construction
rocks, irregularly shaped, and at least six (6) inches in diameter, used for erosion control and soil stabilization, typically used on ground slopes of two (2) units horizontal to one (1) unit vertical or less