32 NOTES ON DOCKS AND DOCK CONSTRUCTION. 



Hard Blue Clay 



10 5 O 



/fr :::: r? ::: -^::::^- fin, 



; ; ; / 7""n"' 



SCALE 

 to go 30 



FiQ. 21. 



SCALE 



p p 10 2 ao 



FIG. '22. 



