NORMAN SELFE 



LXIX. 



Pile A. — Length, 117 ft. 3 in.; diameter at head, 20 J in. ; 

 toe, 16 in. ; girth at 63 ft. from bottom, 67 in. 



This pile went down about 30 ft. into the soft mud by its own 

 weight when let drop from the slings, and required 18 ft. 3 in. of 

 ordinary driving until the last 5 feet was reached. It was 

 then driven home with the number of blows, and the height of 

 fall as follows : — 



Number of Blows. 



Height of Fall. 



Two 



6 feet 





Twenty-five 



7 feet 





Fifteen 



8 feet 





Ten 



9 feet 





Seven 



10 feet 





One 



11 feet 





The total fall was 478 ft., the number of blows 60, and the 

 average distance driven was 1 in. per blow. 



Pile B.— Length, 126 ft. 6 in. ; head, 18 J ; toe, 13 in. ; girth 

 at 54 ft., 73 in. ; ram, 32 cwt. 



This pile is 58 ft. 2 in. in the mud altogether; say, 28 ft. 2 in 

 in the soft, and 30 ft. of driving, as follows : — 



First 5 ft.— Ten blows 



Eleven blows 



3 ft ) 



„ ' } 21 blows, 74 ft. droc 



4 ft. i 



Second 5 ft. 



— Twenty blows . 

 Seven ,, 

 Nine „ 



. 4 ft. j 

 . 5 ft. ( 



. 6 ft. j 



36 blows, 169 ft. 

 drop. 



Third 5 ft.- 



—Two blows 



. 4 f t. > 







Seven ,, 



. 5 ft. 







Nine ,, 

 Five „ 

 One 



. 6 ft. 

 . 7 ft. 



. 8 ft. 



52 blows, 202 ft. 

 drop. 





Five „ 



. 10 ft. 







One 



. 12 ft. 





