Current through Register Vol. 48, No. 9, September 27, 2024
1.
Applicability. Requirements of this section are applicable to all new
construction and alterations of existing public swimming pools.
2. Type "D" Pools. In addition to meeting all
other applicable requirements of these regulations as found in Section C,
including steps and handrails, except where fiberglass spas are used, figure
four handrails may be acceptable provided they extend over the last step. Type
"D" pools must also meet the following:
(a)
There must be a minimum of two (2) inlets, two (2) main drains to be located on
the pool bottom floor and at least one (1) surface skimmer or gutter system
positioned and operated in accordance with R.6-51.C.26.
(b) All drains providing water to the booster
system must be located on the pool bottom floor.
(c) Inlets and outlets must be provided and
arranged to produce complete recirculation of pool water and the maintenance of
a uniform and adequate level of disinfecting medium at all times.
(d) The maximum depths for Type "D" pools
shall be four (4) feet. Type "D" pools must be provided with a means of
completely draining the contents of the pool to waste without passing through
the filter. This may be done by a gravity waste line directly from the pool or
by pumping and by-passing the filter.
(e) All Type "D" pools must have a single
timer set for a maximum of 15 minutes which must turn on and off the hydro pump
and blower if provided. This timer switch must be inaccessible to persons while
in the spa.
(f) An emergency
cut-off switch must be provided in the pool area which, when triggered, will
simultaneously shut off the spa booster and recirculation pumps. This switch
must be clearly visible, labeled, easily accessible at all times, and no
greater than a twenty five (25) foot distance from the entrance steps of the
spa.
(g) The top front edge of
seats must be marked with a black or dark colored stripe in accordance with
R.61-51.D.2(h).
(h) No sliding boards are allowed in Type "D"
pools.
3. Recirculation
System.
(a) A recirculation system consisting
of pumps, motors, piping, filters, inlets, outlets, disinfecting and other
water conditioning equipment and necessary accessories must be provided for
water purification in accordance with water quality criteria contained herein
and must be designed to completely turnover the entire pool volume per the
following schedule based upon pool volume:
(i) Up to one thousand and five hundred
(1,500) gallons: one-half (1/2) hour.
(ii) One thousand and five hundred (1,500)
gallons up to four thousand (4,000) gallons: one (1) hour.
(iii) Four thousand (4,000) gallons up to
eight thousand (8,000) gallons: two (2) hours.
(iv) Eight thousand (8,000) gallons up to
sixteen thousand (16,000) gallons: four (4) hours.
(v) Over sixteen thousand (16,000) gallons:
six (6) hours.
(b) The
recirculation system shall be designed to operate on a twenty-four (24) hour
basis. The normal pattern of recirculation developed must be fifty (50) percent
flow through the overflow or skimming facilities and fifty (50) percent through
the main drains. The recirculation system must be designed with adequate
capacity such that one hundred (100) percent of the recirculation flow can pass
through the overflow or skimming facilities and one hundred (100) percent
through the main drain.
4. Pool Deck. The pool deck must be
constructed in accordance with Section C, Paragraph 6.
5. Pool Temperatures. For heated pools a
thermostat control must be provided with an automatic cut-off for an upper
limit of 104 degrees Fahrenheit and above.
6. Automatic Controllers. All new Type "D"
pools shall be equipped with automatic controls to provide adequate feed rate
of halogen and pH adjustment chemicals in order to keep the disinfectant and pH
at the required levels on a continuous demand basis. A warning light or
indicator shall be provided in a visible location for supervisory control. The
device shall indicate absence of chemicals in feeders, improper adjustment of
chemical dosage, or any other mechanical or operational malfunctions, e.g.
recirculation flow stops.
