SOLUTION SHEET FOR PROGRAM 104R 

 The following equations are given in the Shore Protection Manual: 



fb ^ 1 (2-91) 



H^ b - (aHb/gT2) 



a = 43.75(1 - e-l^"*) (2-92) 



b = '-'' 



(1 + e-l^-S™) (2-93) 



Xp = TpHb = (4.0 - 9.25 m)Hb (7-3) 



Hb = T^ (7-4) 



D ft — mT.» 



Equation (7-4) can be rewritten in dimensionless form as: 



d^ 



Hb = 



[(b - aHb)-^ - mTp] 



where 



Hb = Hb/gT2 and dg = dg/gT^ 



The^above equation can then be solved via the quadratic formula for Hb iri terms 

 of ds, Tp, m, a, and b where the positive root provides useful results. 



Hb = ((mTpb - ads - 1) + [(mTpb-adg-l)^ + 4amTp bdg] ^^\. (2amx^)~^ 

 This is the equation used in the program for design breaking wave height. 



104R-2 



51 



