FLOOD00950

• County: Statewide
• Title: Rock Riprap Design for Protection of Stream Channels near Highway Structures volume 2
• Date: 1/1/1986
• Prepared By: USGS
• Floodplain - Doc Type: Educational/Technical/Reference Information

This study presents an analysis of various procedures commonly used for
armoring a bank by placement of flexible rock revetment, also known as riprap or
riprap lining, to protect highway structures from damage caused by channel
erosion. The study was funded by the Federal Highway Administration (FHWA) as
part of their effort to develop streambank stabilization measures in the feder-
ally coordinated program of Highway Research, Development, and Technology.
Dr. Roy E. Trent is the FHWA's technical representative for the study.

Procedures for design of riprap have been prepared by a number of agencies,
such as FHWA, U. S. Army Corps of Engineers (USCE), U. S. Bureau of Reclamation
(USBR), and California Department of Trafi$portation (CALTRANS, formerly Califor-
nia Department of Public Works, Division of Highways), The various design pro-
cedures have been identified in table 1, using an abbreviation for brevity,

The purpose of this research effort is to evaluate inconsistencies or
possible deficiencies in the procedures described in HEC-ll and HEC-15 for
design of rock rip rap . Other procedures for rip rap design, such as "Hydraulic
Design of Flood Control Channels," (EM-160l) and the "Bank and Shore Protection
in California Highway Practice" manual (Cal-B&SP) were also evaluated. All of
the design procedures included in this study were reviewed with the intent of
providing information needed for interim and long-term approaches for the prac-
tical and functional design of riprap.

Table 1. Agency, publication title, and abbreviated title of
various rock riprap design procedures.

Agency

Title and date of
rip rap design procedure

Procedure
abbreviation

Federal Highway Administra-
tion (FHWA)

California Department of
Transportation (CALTRANS)

u.S. Army Corps of Engineers
(USCE)

American Society of Civil
Engineers (ASCE)

Simons and Senturk

u.S. Bureau of Reclamation
(USBR)

Oregon Department of
Transportation

Hydraulic Engineering Circulars:
Use of rip rap for bank protec-
tion (Searcy, 1967),
Design of stable channels with
flexible linings (Normann, 1975)

Bank and shore protection in
California highway practice
(1970)

Hydraulic design of flood control
channels, EM 1110-2-1601 (1970)

Sedimentation Engineering, Manual
No, 54 (Vanoni, 1975)

Sediment transport technology
(1977)

Hydraulic design of stilling
basins and energy dissipators
(Peterka, 1958, Engineering
monograph No. 25)

Keyed riprap (no date given)

HEC-ll

HEC-15

Cal-B&SP

EM-1601

Man-54

Simons-STT

USBR-EM-25

ODOT

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