'Tp 



Paqe no 



Calculated by 



Design Problem longshore Transport {shE^IIlll. 



Datt 



//5_of_/33_ 

 2t /'/or 73 



Longshore Wove Ener g y (cont) 

 Shoreline azimufh ^25 " 



P^oufb^ 24.04^10^ fi-lb/n-yr 

 9^^^^-=- 3.30 "W^ fflb/fhyr 

 Pr,et = 20.74 >^ 10^ H-lb/fl-yr 

 Pgfx>ss^ 2734 x/^9 ff-ib/ffyr 



Note: The energy given is significant y\iave 

 energy* smce it is computed as if ihc 

 sea surface if^ere made up of trams of 

 periodic vvaves having the cnoractehstics 

 of ttie significanf yvave. The ocfuai 

 energy yvill be approximately one Jia/f \ 

 (o.Sd) of the given yalues. 



longshore Sand Transport Estimate 



^here 



Ii = submerged weight sand transport 



Pjt ~ longshore component of tvave 

 energy fluK. 



k = dimensionless constant 



0,25 ^ k ^ (2 77 



(An average value of k when no other 

 evidence is available: k=0.35) 



Conversion of 1/ to Qi 



Q^ ~ volume transport 



R.f.n 



8-115 



