(3) Armor Unit Size . 



(a) Primary Cover Layer (see Ch. 7, Sec. Ill, 7, a) . 



w H"^ 

 W = j^ r-T (eq. 7-116) 



8^(v^Y^~^°^ 



where 



W = mass of armor unit 



H = design wave height = 6 m 



w^ = unit weight of concrete 



23.56 kN/m"^ , 25.13 kN/m^ , and 26.70 \CAlm 

 cot 6 = structure slope 1.5, 2.0, 2.5, and 3.0 

 w 



V 



S = — = ratio of concrete unit weight to unit weight of water 



w 

 K^ = stability coefficient (depends on type of unit, type of 



wave action, and structure slope) 



The calculations that follow (Tables 8-9 and 8-10 and Figs. 8-20 

 through 8-25) are for the structure trunk subjected to nonbreaking wave 

 action. Stability coefficients are obtained from Table 7-8. 



8-49 



