CONSTRUCTION NOTES 365 



1 8. Separate pool 20 x 75 feet with water depth of one foot, six inches, 

 at edges and sloping to two feet at center. Advantages : Provides swimming 

 and wading pool for children, under eight years in particular, who will 

 probably be brought by parents. Aside from greater safety, this obviates 

 necessity of depths of less than three and one-half feet in main pool, which 

 is considered minimum depth for practical swimming purposes for adults. 



19. Rough finish for runway and bottom of children's pool. Advan- 

 tages: Prevents slipping and is still capable of being cleaned by ordinary 

 pressure from hose nozzle combined with scrubbing as conditions require. 



20. Six-tier bleachers, 100 feet long, midway along side of pool opposite 

 diving tower and bathhouse. Advantages : Adequate provision for spectators 

 popularizes swimming as a sport and may be a source of revenue. Location 

 suggested gives all spectators unrestricted view of all aquatic events. 



21. Pools, bathhouse, and bleachers located on 200 x 3OO-foot area, and 

 all unoccupied area grassed. Advantages: Provides area for active recrea- 

 tion while out of water and is a stimulus toward inducing people to spend 

 more time exposed to the sun. For this purpose grass is superior to sand, the 

 chief advantage of the latter being its association with a natural beach. 



22. Eight-foot chain link wire fence enclosing the whole. Advantages: 

 Limits use of pool to those authorized. Limits persons in bathing suits to 

 immediate vicinity of popj. Provides absolute control in the collection of 

 fees where desired. 



23. Separate entrance for spectators and three-foot chain link wire 

 fence separating them from swimmers. Advantages: Avoids dirt from shoes 

 being carried into pool as a result of spectators on runway. Simplifies 

 admitting spectators at lower fee than swimmers. 



24. Pool designed to maintain hygienic conditions of water by com- 

 bination of fill and draw and continuous flow methods. Pool to be refilled 

 weekly and splash replaced daily. Advantages : Fill and draw method gives 

 opportunity to clean inside of pool at frequent intervals. Size of drain and 

 supply pipes incurs no loss of time in use of pool. Maintaining three parts 

 per million of chlorine in the water would provide additional safety. If 

 cost of water is so high as to compensate for the installation and operation 

 of a filtration plant, recirculation might be considered. In case this were 

 done, three 84-inch pressure filters, each with the usual capacity of 115.4 

 gallons per minute, would filter an amount of water equal to the total 

 volume of this pool in approximately 24 hours. 



25. Bathhouse provides for collection of fees, supplying of towel, suit, 

 locker key, etc., by one for men and one for women. Advantages: This 

 arrangement makes possible operation with a minimum of supervision, 

 which can be further reduced during hours when smaller numbers are in 



