98 



COMPARATIVE COST OF CONCRETE Continued. 

 ( A.11 Hand Mixed.) 



tSand and Gravel. 

 $Set. Forms and Mixed Concrete. 



* Reinforced Concrete dam. Footings put in by aid of coffer- 

 dams and steam pump. 



a poor man, 15 cu. yd. For 1 cu. yd. of concrete, labor 

 at 15c, 



1 cu. yd. stone loaded for lie 

 0.4 cu. yd. sand loaded for 4c 



15c a yard 



Cement can be loaded for 2c per yd., making a total of 

 17c. 



Materials can be transported by wheelbarrows, on a 

 steep rise, loaded with 2 sacks of Portland cement or 2 

 cu. ft. of stone, or on the level 3 sacks. A man can travel 



