Washington Administrative Code
Title 246 - Health, Department of
RECREATIONAL WATER
Chapter 246-262 - Recreational water contact facilities
Section 246-262-060 - General design, construction, and equipment
Current through Register Vol. 24-18, September 15, 2024
(1) Owners shall locate RWCFs to:
(2) Owners shall use only materials in the structure and equipment which are nontoxic, durable, inert, impervious to water, and easily cleaned.
(3) Owners shall design and maintain walking surfaces which are:
(4) Owners shall provide adequate barrier protection to prevent unauthorized access including:
(5) Owners shall ensure that pools:
TABLE 4 MAXIMUM RADIUS COVING OR POOL INTRUSION DIMENSIONS BETWEEN POOL FLOOR AND WALL* |
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Pool Depth |
2'0" |
2'6" |
3'0" |
3'6" |
4'0" |
4'6" |
5'0" |
>5'0" |
Minimum Slide Wall |
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Vertical Depth |
1'6" |
1'10" |
2'2" |
2'6" |
2'10" |
3'2" |
3'6" |
>3'6" |
Maximum Radius |
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of Curvature |
6" |
8" |
10" |
12" |
1'2" |
1'4" |
1'6" |
**Maxi-mum radius equals pool depth minus the vertical wall depth |
Note: |
* For pool depths which fall between the depths listed, values can be interpolated. |
** Radius of coving cannot intrude into pool within diving envelope or deep water entry area for attractions entering above pool water level. |
Note: |
* |
This requirement is based on a standard described in CNCA publication "Swimming Pools: a Guide to their Planning, Design, and Operation" 1987. Fourth edition. Human Kinetics Publisher, Inc., Champaign, Illinois. Figure 8.1 |
FIGURE 1:
Minimum dimensions for pools with provision for diving from deck level or providing boards or platforms at a height less than one-half meter.
Dimension |
Minimum |
Preferred or Maximum |
|
A |
Height of board above water |
20 in. |
|
B |
Board overhang |
2 ft 6in. |
3 ft |
C |
Depth of water at plummet |
9 ft |
10 ft* |
D |
Distance from plummet to start of upslope |
16 ft |
18 ft* |
E |
Inclination of upslope of bottom |
1:3 |
|
F |
Depth of water at breakpoint |
4 ft 6 in. |
|
G |
Slope of bottom in shallow portion of pool |
1:12 |
1:15* |
H |
Length of shallow section of pool |
8 ft |
14 ft* |
I |
Distance to any overhead structure |
13 ft |
15 ft* |
K |
Board length |
12 ft |
|
L |
Length of pool |
40 ft |
50 ft* |
M |
Dimension not less than C minus |
6 in. |
Note: |
* Values with asterisks are not to be considered as maximums. |
** Warning stripe at break point may be of any contrasting color. |
Note: |
** |
This requirement is based on a standard described in FINA publication "FINA Handbook - 1986-1988." Constitution and rules governing swimming, diving, water polo, and synchronized swimming, 1986-1988. Edited by E. Allen Harvey, Vancouver, Canada VGN 3R6, Section D, pp. 114-115. |
FIGURE 2:
Minimum dimensions for pools with boards or platforms at a height of one-half meter or more.
Dimensions |
SPRINGBOARD |
PLATFORM |
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FINA |
are in Metres |
1 Metre |
3 Metres |
1 Metres |
3 Metres |
5 Metres |
7.5 Metres |
10 Metres |
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DIMENSIONS FOR |
LENGTH |
4.80 |
4.80 |
4.50 |
5.00 |
6.00 |
6.00 |
6.00 |
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DIVING FACILITIES |
WIDTH |
0.50 |
0.50 |
0.60 |
1.50 |
1.50 |
1.50 |
2.00 |
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Revised to 1st Jan 1987 |
HEIGHT |
1.00 |
3.00 |
0.60-1.00 |
2.60-3.00 |
5.00 |
7.50 |
10.00 |
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HORIZ |
VERT |
HORIZ |
VERT |
HORIZ |
VERT |
HORIZ |
VERT |
HORIZ |
VERT |
HORIZ |
VERT |
HORIZ |
VERT |
|||
A |
From plummet BACK TO POOL WALL |
DESIGNATION |
A-1 |
A-3 |
A-1P1 |
A-3P1 |
A-5 |
A-7.5 |
A.10 |
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MINIMUM |
1.80 |
1.80 |
0.75 |
1.25 |
1.25 |
1.50 |
1.50 |
|||||||||
A/A |
From plummet BACK TO PLATFORM Plummet directly below |
DESIGNATION |
AA5/1 |
AA7.5/3/1 |
AA10/5/3/1 |
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MINIMUM |
1.50 |
1.50 |
1.50 |
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B |
From plummet to POOL WALL AT SIDE |
DESIGNATION |
B-1 |
B-3 |
B-1p1 |
B-3p1 |
B-5 |
B-7.5 |
B-10 |
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MINIMUM |
2.50 |
3.50 |
2.30 |
2.90 |
4.25 |
4.50 |
5.25 |
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C |
From plummet to ADJACENT PLUMMET |
DESIGNATION |
C-1/1 |
C-3/3/1 |
C-1/1p1 |
C-3/1P1/3p1 |
C-5/3/1 |
C-7.5/5/3/1 |
C-10/7.5/5/3. |
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MINIMUM |
2.40 |
2.60 |
1.65 |
2.10 |
2.50 |
2.50 |
2.75 |
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D |
From plummet to POOL WALL AHEAD |
DESIGNATION |
D-1 |
D-3 |
D-1p1 |
D-3p1 |
D-5 |
D-7.5 |
D-10 |
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MINIMUM |
9.00 |
10.25 |
8.00 |
9.50 |
10.25 |
11.00 |
13.50 |
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E |
On plummet, from BOARD TO CEILING |
DESIGNATION |
E-1 |
E-3 |
E-1p1 |
E-3p1 |
E-5 |
E-7.5 |
E-10 |
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MINIMUM |
5.00 |
5.00 |
3.50 |
3.50 |
3.50 |
3.50 |
5.00 |
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F |
CLEAR OVERHEAD behind and each side of plummet |
DESIGNATION |
F-1 |
E-1 |
F-3 |
E-3 |
F-1p1 |
E-1p1 |
F-3p1 |
E-3p1 |
F-5 |
E-5 |
F-7.5 |
E-7.5 |
F-10 |
E-10 |
MINIMUM |
2.50 |
5.00 |
2.50 |
5.00 |
2.75 |
3.50 |
2.75 |
3.50 |
2.75 |
3.50 |
2.75 |
3.50 |
2.75 |
5.00 |
||
G |
CLEAR OVERHEAD ahead of plummet |
DESIGNATION |
C-1 |
E-1 |
C-3 |
E-3 |
G-1p1 |
E-1p1 |
G-3p1 |
E-3p1 |
G-5 |
E-5 |
G-7.5 |
E-7.5 |
G-10 |
E-10 |
MINIMUM |
5.00 |
5.00 |
5.00 |
5.00 |
5.00 |
3.50 |
5.00 |
3.50 |
5.00 |
3.50 |
5.00 |
3.50 |
6.00 |
5.00 |
||
H |
DEPTH OF WATER at plummet |
DESIGNATION |
H-1 |
H-3 |
H-1p1 |
H-3p1 |
H-5 |
H-7.5 |
H-10 |
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MINIMUM |
3.50 |
3.80 |
3.30 |
3.60 |
3.80 |
4.50 |
5.00 |
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J |
DISTANCE AND DEPTH |
DESIGNATION |
J-1 |
K-1 |
J-3 |
K-3 |
J-1p1 |
K-1p1 |
J-3p1 |
K-3p1 |
J-5 |
K-5 |
J-7.5 |
K-7.5 |
J-10 |
K-10 |
K |
ahead of plummet |
MINIMUM |
5.00 |
3.40 |
6.00 |
3.70 |
5.00 |
3.20 |
6.00 |
3.50 |
6.00 |
3.70 |
8.00 |
4.40 |
11.00 |
4.75 |
L |
DISTANCE AND DEPTH |
DESIGNATION |
L-1 |
M-1 |
L-3 |
M-3 |
L-1p1 |
M-1p1 |
L-3p1 |
M-3p1 |
L-5 |
M-5 |
L-7.5 |
M-7.5 |
L-10 |
M-10 |
M |
each side of plummet |
MINIMUM |
1.50 |
3.40 |
2.00 |
3.70 |
1.40 |
3.20 |
1.80 |
3.50 |
4.25 |
3.70 |
4.50 |
4.40 |
5.25 |
4.75 |
N |
MAXIMUM SLOPE TO REDUCE DIMENSIONS beyond full requirements |
POOL DEPTH CEILING HT |
30 degrees 30 degrees |
NOTE Dimensions C (plummet to adjacent plummet) apply for Platform with widths as detailed. For wider Platforms increase C by half the additional width(s) |
(6) Owners shall ensure treatment turnover at rates no less than designated as follows:
(7) Owners shall provide pool inlets which are:
(8) Except as provided in (d) and (e) of this subsection owners shall provide pool outlets with:
FIGURE 3:
Main Drain Branch Line Piping Detail.
TABLE 5
MAIN DRAIN FLOW RATING REQUIREMENTS
Number of Main Drains Per Recirculation System |
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2 |
3 |
4 |
5 |
|
Main drain rated flow capacity must be at least equal to the percent of maximum pump flow indicated, depending on the number of main drains. |
100% |
50% |
33.3% |
25% |
(9) Owners shall maintain recirculation flow which:
(10) Owners shall provide a surge chamber or surge area in RWCFs with an entry pool to:
(11) Owners having RWCFs with overflow channels requiring balancing tanks shall:
(12) Owners shall have and maintain recirculation pumps with adequate capacity to:
(13) Where pumps precede the filter, owners shall install hair and lint strainers, which shall:
(14) Owners shall provide valves at appropriate locations to allow isolation and maintenance of equipment.
(15) Owners shall provide equipment rooms which:
(16) Owners shall ensure the source of make-up water and associated piping in the RWCF:
(17) Owners shall equip RWCFs with filtration equipment which:
TABLE 6 FILTER TYPES AND ACCEPTABLE RATES |
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Range of Acceptable Filter Rate Expressed in gpm/sq. ft. |
|||
Type of Filter |
Minimum |
Maximum* |
|
Sand |
|||
Rapid & pressure |
-- |
3 |
|
Pressure high rate |
10 |
18 |
|
Vacuum high rate |
10 |
18 |
|
DE |
Continuous feed |
Manual feed |
|
Vacuum |
0.8 |
1.0 |
2.0 |
Pressure |
1.0 |
1.35 |
2.0 |
Cartridge** |
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Applied in |
|||
temperature |
|||
ranges: |
|||
<95°F. |
-- |
0.375 |
|
>95°F. |
-- |
0.188 |
Note: |
* Filters sized at maximum application rate shall use flow control valves. |
** Cartridge filters shall have a nominal micron rating of twenty microns or less. |
(18) Owners shall provide disinfection equipment which:
(19) Owners applying chemicals other than disinfectant shall provide chemical feed equipment with:
(20) Owners shall have testing equipment to provide means for measuring disinfectant residuals, pH, alkalinity, and any other chemicals used routinely in the RWCF water. In pools where compressed chlorine gas is used, means to detect leaks shall be provided, i.e., use of proper strength ammonia vapor.
(21) Owners shall provide easily accessible change room facilities at all RWCFs with:
TABLE 7 MINIMUM PLUMBING FIXTURE REQUIREMENTS BASED ON MAXIMUM PEAK PERIOD OCCUPANCY |
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Number of Fixtures Required Per Occupancy Load |
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Type of Fixture |
Occupancy/Sex |
Male |
Female |
|
1. |
Toilets |
First 600 |
1/200 |
1/100 |
Portion |
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exceeding 600 |
1/450 |
1/300 |
||
2. |
Urinals |
First 600 |
1/200 |
- |
Portion |
||||
exceeding 600 |
1/450 |
- |
||
3. |
Showers |
First 300 |
1/100 |
1/100 |
Portion |
||||
exceeding 300 |
1/200 |
1/200 |
||
4. |
Sinks |
First 400 |
1/200 |
1/200 |
Next 350 |
1/350 |
1/350 |
||
Portion |
||||
exceeding 750 |
1/500 |
1/500 |
||
5. |
Hose bibs |
1 accessible to change rooms |
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6. |
Janitor sink |
1 within the RWCF |
(22) Owners shall design and maintain lighting at RWCF attractions or change rooms to:
(23) Owners shall provide first-aid facilities in every RWCF including:
(24) Owners shall provide signs at RWCF entrances and change rooms. Any combination of words, pictures, or symbols may be used to convey the following conditions:
(25) If owners allow or make provision for food service:
(26) Owners shall prevent users or spectators access to mechanical, electrical, or chemical equipment facilities.
(27) Owners shall provide an operable drinking fountain of the angle jet type design meeting the requirements of the American Standards Association.
Statutory Authority: RCW 70.90.120. 12-17-102, § 246-262-060, filed 8/17/12, effective 9/17/12; 10-20-131, § 246-262-060, filed 10/5/10, effective 11/5/10; 92-02-020 (Order 226B), § 246-262-060, filed 12/23/91, effective 1/23/92. Statutory Authority: RCW 43.20.050. 91-02-051 (Order 124B), recodified as § 246-262-060, filed 12/27/90, effective 1/31/91. Statutory Authority: RCW 70.90.120. 88-13-125 (Order 311), § 248-97-070, filed 6/22/88.