Figure 32. Example of cracks noted in vertical portions of concrete cap 

 at Spud Point Marina breakwater 



piles were not visible due to the buildup of barnacles on the structures. 

 There is no evidence that the hairline cracks in the breakwater cap are 

 threatening the integrity of the structures. Overall, the structure appears 

 to be in very good to excellent condition. 



Fisherman's Wharf Harbor Breakwater, 

 California 



The Fisherman's Wharf area is located in San Francisco Bay, CA, near 

 the Golden Gate Bridge and is a well-defined segment of the San Fran- 

 cisco city waterfront. A breakwater system was constructed in 1986 to 

 provide wave protection to the area. The main breakwater is 460 m 

 (1,509 ft) in length and is constructed of prestressed-precast interlocking 

 concrete sheet piles on a curvilinear alignment. It is buttressed by in- 

 clined batter piles with a cast-in-place reinforced concrete cap tying the 

 piles together. The breakwater system also consists of two additional in- 

 terlocking sheet-pile, vertical-wall structures, but they are segmented with 

 openings at various intervals to permit tidal circulation. These east and 

 west segmented structures are 46 and 78 m (150 and 258 ft) in length, re- 

 spectively. A layout of the harbor is shown in Figure 33. 



The Fisherman's Wharf breakwaters were monitored between June 

 1987 and August 1991 under the MCNP program (Lott 1994). Objectives 

 of the study were to obtain wave information in the harbor and compare it 



Chapter 2 Project Descriptions and Inspection Results 



29 



