20 
Riprap (1000 Ibs. to 6000 
. Ibs. averaging 4000 Ibs.), 
EL.+ 15.0 chinked with one man stone. 
Low dunes graded 
to + 15.0 ft. Natural beach 
Crushed stone unscreened 
2 Ye inches and under. 
Crest EL. 14.9' 
mS ' 
SSS MLW EL.OO 
W Wto W/2 Rh 
W/200 to W/6000 
W/10 to W/15 3 
12" Min. Thickness 
Stone Weight Total Layer Thickness | 
Ww 4.7 tons plus 7.8 ft. 
W to W/2 2.to 5 tons 7.8 ft. 
W/10 to W/15 600 to 2000 Ibs. 4.0 ft. (min.) (larger stone on outer surface) 
W/200 to W/6000 600 Ibs. to chips — (larger stone on outer surface ) 
FIGURE 4. RUBBLE MOUND JETTY OR BREAKWATER 
