Table 14 (Continued) 



Date(s) Construction and Rehabilitation History 



1931- 49,500 and 51,200 tons of stone were placed on the north and south 

 1932 jetties, respectively. The cost of the seaward repairs totaled 

 (Cont) $376,000. 



1934 Voids on the ocean side of the north jetty were filled with 25- to 

 100-lb of granite stone to arrest the flow of sand through the 

 structure, and 4,800 tons of stone were placed between sta 57+50 and 

 74+50 at a cost of $21,300 (Figure 24). A monolithic concrete cap 

 ranging in width from 2 to 8 ft was constructed along the centerline 

 of the north jetty between sta 50+30 and 85+85. The crown elevation 

 ranged between +11 and +13 ft mlw. A total of 3,780 cu yd of con- 

 crete was placed on the structure at a cost of $58,000 (Figure 24). 



1935 Elevations on the north jetty varied form +6 to +14 ft mlw and on 

 the south jetty varied from to +14 ft mlw. Repairs were made to 

 the inner portion of the south jetty, filling void spaces from 

 sta -4+75 to 31+00 using 200 to 2,000-lb stone. From sta 31+00 to 

 36+50 the voids were filled between 0.0 and 4.0 ft mlw with smaller 

 stone (less than 200 lb). This section was repaired using a 4-ft- 

 crown width at an elevation of +7 ft mlw and IV: IH side slopes 

 (Figure 24) . 



1938 The north jetty concrete cap was widened from the existing 2-ft sec- 

 tion to a width of 6 ft between sta 50+30 and 56+60 (Figure 24) . 



1940- Repairs were made to the south jetty between sta 8+00 and 38+00 

 1941 (Figure 24). Granite stone of 1 to 3 tons and 3 to 6 tons was 



placed on the inner 1,200 ft and outer 1,800 ft, respectively. Void 

 filling stone of 50 to 150 lb was placed throughout the repair sec- 

 tion. The design called for a 6-ft crown width at +7 ft mlw with 

 IV: IH side slopes. Sand overlying the jetty was to be removed 

 before stone placement. Small stone was removed between 33+00 and 

 38+00 as required to allow placing of the cover stone to the design 

 section with the removed stone subsequently used to fill voids. 

 21,800 tons of 1- to 6-ton stone and 4,800 tons of 50- to 150-lb 

 stone were placed at a cost $105,000. 



1961 Rehabilitation made to the seaward end of the south jetty between 

 sta 88+00 and 102+70 and the north jetty between sta 62+00 and 

 11+100 (Figure 24). Areas of deterioration from settlement and dis- 

 lodgement of stone had occurred at the ocean ends and along landward 

 portions of both jetties. Also, several portions of the north jetty 

 concrete cap had been broken and displaced from the crown along with 

 some of the underlying support stone. The major causes of settle- 

 ment seemed to be slope flattening and the possibility of wave 



(Continued) 



(Sheet 3 of 4) 



47 



