What are the classes of riprap?

Erosion Control and Rip-Rap

  • Class I – 50 lbs to 150 lbs. or 12”- 18”
  • Class II – 150 lbs to 500 lbs. or 18” – 26”
  • Class III – 500 lbs. to 1500 lbs. or 26” – 36”
  • XL Gabion – 8” to 12.
  • Gabion – 4” to 6”

What size is Class A rip rap?

No more than 10% of the stone will have a diameter greater than twelve (12) inches; no more than 50% of the stone will have a diameter less than ten (10) inches; and no more than 10% of the stone will have a diameter of less than six (6) inches.

What size is Type 3 rip rap?

Large, loose, angular grey stone that is made from granite and ranges in size starting from 18” and up.

What is class1 rip rap?

RIP-RAP CLASSIFICATION SPECIFICATIONS. CLASS 1 RIP-RAP. No more than 10% of the stone will have a diameter greater than twelve (12) inches; no more than 50% of the stone will have a diameter less than ten (10) inches; and no more than 10% of the stone will have a diameter of less than six (6) inches.

What is Type 2 rip rap?

A large aggregate that has been crushed, reduced, and screened to size. Usually a permanent, erosion-resistant ground cover.

What is Class C rip rap?

Description. Our Type C Limestone measures between 6″ and 18″. This Limestone Rip-Rap, or sometimes known as revetment stone, is a larger stone that is used to stabilize slopes and control erosion.

What does D50 mean for riprap?

D50 = riprap diameter in feet. Thickness: The minimum thickness of the riprap layer shall be 2.2 times the maximum stone diameter (for a D50 of 12” or smaller), but not less than 6 inches. For D50 specified greater than 12 inches, the riprap layer thickness shall be 2 times the D50.

What is R 3 rip rap?

Rip rap is large — nearly boulder-size — crushed stone. It is mainly used in applications by bodies of water, which is why you commonly see it along streams, rivers and similar locations.

What size is Class C rip rap?

between 6″ and 18″
Description. Our Type C Limestone measures between 6″ and 18″. This Limestone Rip-Rap, or sometimes known as revetment stone, is a larger stone that is used to stabilize slopes and control erosion.

What size is D50 riprap?

From Curve 22-5, it can be found that the riprap for d50 = 3.4″ and 4.52″ will both be stable on a 2.5:1 side slope. This design procedure applies to riprap protection of shorelines surrounding open bodies of water, such as lakes, bays, estuaries etc.