010-4 Wyo. Code R. §§ 4-12 - Overflow Systems

(a) A public pool shall be operated with a continuous overflow system.

(i) The overflow system shall be a perimeter-type system or a system of overflow skimmers.

(b) A general-use pool or a limited-use pool with more than two thousand (2,000) square feet (185.78m²) of surface area shall use a perimeter-type overflow system.

(c) A limited-use pool with less than two thousand (2,000) square feet (185.87m²) of surface area shall use a perimeter-type system or a skimmer system.

(d) A perimeter-type system shall in addition be connected to the re-circulation system with a system surge capacity of at least one (1) gallon (3.785 1) per square foot (.3m²) of pool surface.

(i) External surge systems shall be capable of transferring water at a rate equal to one-hundred (100) percent of the design pool flow rate.

(e) Gutters shall:

(i) Drain in two (2) minutes or less after sudden flooding;

(ii) Extend completely around the pool;

(iii) Be smooth and easy to clean;

(iv) Slope at least one-eighth (1/8) inch (3mm) per foot (30cm); and

(v) In combination with the upper rim of the pool, constitute a handhold.

(f) A skimmer-type system shall:

(i) Have one skimmer for each four-hundred (400) square feet (37.17m²) of surface area with a minimum of two skimmers per pool;

(ii) Be used only in conjunction with a continuous handhold extending the full perimeter of the pool; and

(iii) Be located so as to achieve effective skimming action over the entire surface area of the pool.

(g) Where surface skimmers are used in a spa pool, the flow rate through the skimmer shall:

(i) Be designed to provide fifty (50) percent of the total turnover rate with a maximum flow through any single skimmer of thirty (30) gpm;

(ii) Have the minimum width of a skimmer intake throat of five (5) inches (12.Scm); and

(iii) Where surface skimmers are used as the sole overflow system, one (1) surface skimmer shall be provided for each one hundred (100) square feet (9.3m²) or fraction thereof of the spa's surface area.

(A) If a conflict arises between (i) and this subsection, the subsection requiring the greatest number of skimmers shall apply.

(iv) When two (2) or more skimmers are used in a spa, they shall be located to maintain effective skimming action over the entire surface area of the spa.

(h) Overflow systems shall be designed to return overflow water to the re-circulation system ahead of the filters; and

(i) Provisions shall be made for diverting gutter water to waste when cleaning the gutter.

Notes

010-4 Wyo. Code R. §§ 4-12