Scour Depth of Retaining Wall Parallel to River

PROJECT

DATE

GURA SHP

STRUCTURE Retaining wall scour depth

 

15/11/2013

DESIGNED sam

REF

CALCULATIONS

OUTPUT

Design of scour of  scour depth of a of  a retaining wall parallel to the river REFERENCES HEC 23 , Chapter ‐ 4

Governing equation and Notations Ys = Y1( 0.73 + 0.14PI()Fr^2 Ys= Equilibrium depth of scour of  scour ( measured from mean bed level ) Y1 = Average upstream flow depth in the river Fr ‐ Upstream Froude Number ENTER FIGU INPUT DATA

NOTATION

100 yr. Flood flow Average Width of  river

UNIT

Q 

m /s

3

 

165.00

L

m

 

35.00

Average bed level

m

 

559.50

Average water level for Q 100 Q  100

m

 

561.10

Upstream water depth

Y1

m

Average velocity

V

m/s

Froude number

Fr

Ys

Ys

Minimum Depth of retaining of  retaining wall foundation

 

1.60  

2.95 0.74

m

1.56

m

1.75