PRACTICAL BOOK OF GARDEN ARCHITECTURE 



corner of each end is sufficient. Make the steps of a 

 width of two feet with riser and tread each ten 

 inches. As a means of precaution for beginners in 

 swimming, provide a "life-line" for the pool. For 

 this purpose fasten a rope in the centre of one end 

 of the pool and have it sufficiently long to extend 

 outside the tank at the opposite end. 



The following estimate of the quantities of ma- 

 terials needed, together with the cost, is based on the 

 building of the pool by the owner, who buys all the 

 material and employs the laborers without putting 

 it in hands of a contractor who would doubtless 

 charge an extra fifty dollars : 



Crushed rock, 54 cubic yards, at $1.10 $59.40 



Sand, 27 cubic yards, at $1.00 27.00 



Portland cement, 90 barrels, at $2.00 180.00 



Reinforcement, 2,040 pounds (3,060 feet) of y 2 inch rods at 



2% cents 51.00 



Labor, 1 foreman, 5 days, at $4.00 20.00 



Labor, 5 men, 5 days at $2.25 56.25 



Labor, 3 teams with drivers, 3 days at $4.25 38.25 



Mechanical mixer, 3 days' rent at $5.00 15.00 



Lumber waste, nails, bolts, etc., 18.10 



Total $465.00 



"With these directions for guidance, it will not 

 be difficult to estimate the cost of swimming pools of 

 different sizes, when the water supply is already in- 

 stalled for other purposes. The same directions in 

 regard to mixing, placing and reinforcing the con- 



