SYMBOLS AMD DEFINITIONS 



C stone overlay weight per square foot (lb/£t^) 



C.F. coverage fraction (dimensionless) 



d Stillwater depth in wave tank (ft) 



H^_Q zero-damage wave height (ft) 



Hp=-l^ tolerable-damage wave height (ft) 



L wavelength (ft) 



Ng conventional stability number, based on median weight, 



Hg=0 



fpr (dimensionless) 



N| stability number, based on average weight, — 



(dimensionless) (W/w^)-^^"^ (S^. - 1) 



Sp specific gravity of armor unit (Sy, = Wj,/Wj^) (dimensionless) 



W average weight of riprap or stone overlay (lb) 



W5Q median riprap or stone overlay weight (lb) 



Wp unit weight of stone (Ib/ft^) 



Wjj unit weight of water (Ib/ft^) 



6 angle of the structure face relative to the horizontal (degrees) 



