23 



TYPE Concrete protected green piles Koetitz method: 

 Date A' umber of 



Structure Constructed Supports 



Bulkhead 



26 to 28 1909 33 



Condition 1921 



18 piles show small rust cracks 

 above high water. Otherwise, 

 piles are in first class condition. 



TYPE Concrete protected green piles "Black Patent" method: 



Date X umber of 

 Structure Constructed Supports Condition 1921 



Fisherman's 211 have been removed because 



Wharves 1908-09 250 of failure at mud line. 30 in 



serviceable condition and now in 



use. 



Pier 7 Est. no. in con- 27 in serviceable condition. 7 



Repairs 1909 tract, 50; 34 gone at mud line, 



now in place. 



TYPE Creosoted pile construction: 



Date X umber of 

 structure Constructed Supports 



Pier 36 

 Outer End 



1909 



570 



Condition 1921 



Piles in fair condition. 



113 Piles repaired between tides 



by cementing limnoria holes. 



17 Piles require replacement as 



shown by inspection between 



tides. 



TYPE Creosoted pile construction: 



Date y umber of 



Slnictitrr Constructed Supports 



Pier 9 



Repilin; 



Pier 7 

 Reoiling 

 and Track 

 Extension. 



Pier 20 



Pier 19 

 Reconstr. 



1911-15 



1912 



1912 



Depressed 

 Track 



1914 



1680 



936 



84 



528 



Condition 1921 



Piles in poor condition. Inspect- 

 ed by diver as follows: 518 piles 

 in good condition. 1010 have 

 limnoria holes between tides. 

 152 piles require replacement. 



Diver's examination: 786 Piles 

 in good condition. 102 defective 

 above low water. 21 defective at 

 mud line. 27 defective at cut off. 



19 piles replaced because of Xy- 

 lotrya attack. 



Heavy Limnoria attack in dog 

 hnles. staging holes and checks. 

 329 Limnoria holes sealed with 

 cement. 



