CURVED CONCRETE WALLS FOR STORAGE RESERVOIRS. 



LIX. 



from the works ; and stone from a diorite quarry about 200 yards 

 from the dam, but in this case the quarry being below the level 

 of the dam all the material had to be lifted. 



Cost for one cubic yard of each ingredient used in concrete : — 



s. d. 

 3 7 

 1 11 



Sand — Getting and washing 



Carting 



Cost of sand per cubic yard... 



Rubble stone — Quarrying 



Explosives, etc. ... ... .... 



Cartage 



Cost of rubble stone per cubic yard 



1^- inch metal and J inch shivers — Quarrying 

 Explosives 

 Crushing and cartage 



Cost per cubic yard ... 



Cement — Cost price of cement per cask 

 Freight, 253 miles rail 

 Cartage, 6 miles 



Cement per cask 



5 6 



3 



8 







7 







7 



4 



10 



~f 



~0 







7 



4 







8 



7 



9 9 

 5 9 

 8 



16 2 



Cost of one cubic yard of aggregate in wall on a total of 2,763 

 cubic yards: — 





Quantity. 



Per unit. 



s. d. 



£ 



s. 



d. 



Cement, cask 



.581 



16 2 





9 



4-71 



Grout, cask 



•0119 



16 2 







2-31 



Sand, cubic yard 



•243 



5 6 





1 



4-04 



Metal and shivers, cubic yard ... 



•435 



8 7 





3 



8-8 



Rubble stone cubic yard 



•482 



4 10 





2 



3-93 



Timber in casing 







3-62 



Labour fixing timber 







6-8 



Labour, mixing and placing, including tools gear, etc. 





4 



0-5 



Carting material and mixing boards ... 







6 



Erection of plant, building and temporary dam for 









water supply 







10-8 



Cost of plant charged to works 







5-77 



Freight and cartage on plant ... 





1 



0-7 



Taking down plant and clearing up ... 



1 



, 



2-22 



Total cost per cubic yard of dam 



5 



0-20 



