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PROJECT DATE 15/11/2013 STRUCTURE DESIGNED sam REF OUTPUT Design of scour depth 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 ( measured from mean bed level ) Y1 = Average upstream flow depth in the river Fr Upstream Froude Number ENTER FIGUR NOTATION UNIT Q m 3 /s 165.00 L m 35.00 m 559.50 m 561.10 Y1 m 1.60 V m/s 2.95 Fr 0.74 Ys m 1.56 m 1.75 Froude number Average Width of river Average velocity Minimum Depth of retaining wall foundation Ys Upstream water depth Average bed level Average water level for Q 100 GURA SHP Retaining wall scour depth CALCULATIONS INPUT DATA 100 yr. Flood flow

Scour Depth of Retaining Wall Parallel to River

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This shows how to evaluate the scour depth at a stilling basin .

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Page 1: Scour Depth of Retaining Wall Parallel to River

PROJECT       DATE 15/11/2013

STRUCTURE DESIGNED sam

REF OUTPUT

Design of scour depth 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 ( measured from mean bed level )

Y1 = Average upstream flow depth in the river

Fr ‐ Upstream Froude Number

ENTER FIGUR

NOTATION UNIT

Q m3/s 165.00      

L m 35.00         

m 559.50      

m 561.10      

Y1 m 1.60           

V  m/s 2.95           

 Fr  0.74           

Ys m 1.56           

m 1.75           

   

Froude number

Average Width  of  river

Average velocity

Minimum Depth of retaining wall foundation 

Ys 

Upstream  water depth

Average bed level 

Average water level for Q 100

GURA SHP

Retaining wall scour depth 

CALCULATIONS

INPUT DATA

100 yr. Flood  flow