WALLS. 



365 



SECTION OF RETAINING WALL 

 FOR TIDAL BASIN WHARVES. 



SECTION OF RETAINING WALL 

 FOR HARboun WHARVES. 



SECTION OF WALL 

 Fon BASIN WHARVES. 



FIG. 333. 



FIG. 336. 



y Level 



Brickwork in 

 Lias Lime Mortar^ 



FIG. 337. 



FIG. 334. FIG. 335. 



The Quay Walls 

 at the London and 

 St. Katherine Docks 

 (Figs. 336, 337) cost 

 about 12s. 6d. per 

 cubic yard, or 12 2s. 

 per lineal foot. This 

 low cost was due to 

 the fact that the 

 gravel and sand was 

 obtained from the 

 excavations. 1 



Floating Docks. 

 Messrs. Standfield and 

 Lias Lime Clarke give the fol- 



Concrete , i 



lowing particulars as 

 regards the cost and 

 working of floating 

 docks. 



Taking a number 

 of docks designed and 

 constructed ' by the 

 firm, they find that the 

 cost of construction 

 ranges from 10 to 



pp. 166, 176. 



20 FEET 



