SYMBOLS AND DEFINITIONS — Continued 



Y unit weight of water (pounds per cubic foot) 



Af • increment of line force spectrum (pounds) 



As change in anchor line per unit length (feet) 



6 effective pore diameter in porous breakwater (feet) 



e efficiency (dimensionless) 



t, damping factor (dimensionless) 



n water surface elevation in front of porous breakwater (feet) 



rip(x,t) wave transmission by fixed body (feet) 



rin : j(x,t) generated wave (feet) 



Pt(x,C) incident wave amplitude (feet) 



rio(x,t) reflected wave amplitude (feet) 



n T (x,t) transmitted wave amplitude (feet) 



rw(x,t) incident wave amplitude (feet) 



9 angle of rotational vibration (degrees) 

 •wave phase angle (degrees) 



X reservoir breakwater width (feet) 

 •wavelength (feet) 



y coefficient of soil static friction (dimensionless) 



it 3.14159 



p mass density (pounds second squared per foot 4 ) 



a statistical variance of force (pounds) 

 •wave frequency (one per second) 



o(x) equivalent alternating stress (pounds per square foot) 



$ dimensionless horsepower ratio 



<j> internal friction of sand (dimensionless) 



ft dimensionless discharge ratio 



w circular wave frequency (radian per second) 



•natural frequency of structure (one per second) 



w n natural frequency of structure (one per second) 

 •frequency of free oscillation (one per second) 



w peak frequency of wave spectrum (one per second) 



22 



