[CC 1976 §525.030; Ord. No. 765 §3, 4-25-1961]
A.
Whenever
the Building Commissioner finds that construction or work in connection
therewith, the erection or construction or alteration, execution or
repair of which is regulated, permitted or forbidden by this Chapter,
is being erected, constructed, altered or repaired in violation of
the requirements of this Chapter or in violation of a detailed statement
or plans submitted and approved hereunder, or of a permit or certificate
issued hereunder, he/she may serve a written notice or order upon
the person responsible therefor directing discontinuance of such illegal
action and the remedying of the condition which constitutes a violation
of the provisions or requirements of this Chapter. In the event that
such notice or order is not promptly complied with the Building Commissioner
shall request the City Attorney to institute an appropriate action
or proceeding at law or in equity to restrain, correct or remove such
violation or the execution of work thereon, or to restrain or correct
the erection or alteration of, or to require the removal of, or to
prevent the use of the construction or work erected, constructed or
altered in violation of, or not in compliance with the provisions
of this Chapter or with respect to which requirements thereof or of
any order or direction made pursuant to provisions contained therein
shall not have been complied with.
B.
Whenever
the Building Commissioner finds by reason of defective or illegal
work in violation of a provision or requirement of this Chapter, the
continuation of construction or work is contrary to public welfare,
he/she may order either orally or in writing all further work to be
stopped and may require suspension of work until the condition and
violation has been remedied.
[CC 1976 §525.040; Ord. No. 765 §4, 4-25-1961]
Any person, firm, association or corporation who shall violate
the terms and provisions of this Chapter or fail to comply therewith,
or with any of the requirements thereof, or who shall erect, construct,
alter or repair, or has erected, constructed, altered or repaired
construction or work in violation of a detailed statement or plans
submitted and approved hereunder or of a permit or certificate issued
hereunder, shall be guilty of a misdemeanor and upon conviction therefor
shall be punished by a fine of not less than ten dollars ($10.00)
or more than one hundred dollars ($100.00) or by imprisonment not
exceeding ninety (90) days, or by both such fine and imprisonment,
and each day such violation continues to exist shall constitute a
separate offense.
[CC 1976 §525.050; Ord. No. 765 §5, 4-25-1961]
A.
All swimming
pools erected, constructed, altered or modified hereunder shall meet
the following minimum requirements:
1.
No swimming
pool or ancillary buildings related thereto or any part thereof shall
be situated closer than ten (10) feet from any lot line.
2.
Drainage
from such swimming pool shall be by gravity or by pumps, (if approved
by the Building Commissioner) and swimming pool waste water shall
not be drained into a sanitary sewer, a storm water sewer, or drainage
ditch unless approved by the St. Louis Metropolitan Sewer District.
An indirect waste connection with a sanitary sewer, a storm sewer
or a drainage ditch shall require a permit issued by the Metropolitan
Sewer District. A true copy of such permit shall be attached to the
application for a building permit; provided, however, that the Building
Commissioner may issue such permit in the event of the failure or
refusal of the Metropolitan Sewer District to do so. Where no hazard,
nuisance or unsanitary condition would result therefrom and with the
approval of the Health Commissioner of the City of Shrewsbury, the
Building Commissioner may approve the use of swimming pool waste water
for irrigation by surface or sub-surface spreading.
3.
All
swimming pools hereunder shall be of the "flow through" recirculating
type.
4.
All
swimming pools hereunder shall be so constructed as to, upon findings
of the Building Commissioner, provide a tight, leakproof tank with
easily cleaned surfaces and designed to withstand the expected forces
to which it will be subjected.
5.
The
inner surface of the pool must be covered, rounder or bullnosed at
all joints, corners, angles of bases, walls, floors or curbs. No sharp
corners or projections will be permitted.
Floor drains shall be flush with the finished surface. To a
depth up to five (5) feet from the top, the wall slope shall not be
more than two (2) feet horizontal in five (5) feet vertical.
6.
Steps
and stairways for entering or leaving the pool should be of such construction
as to minimize danger. Convex, semi-circular or triangular steps shall
have rounded corners. Ladders or stairways shall be located at the
deep end, if there is only one. Treads of ladders or steps should
be of non-slip construction.
7.
All
connections, valves, replacement units, etc. should be of brass or
other non-corrosive material and located where they are easily accessible.
Full way valves shall be installed throughout to insure proper functioning
of the filtration and piping system. Combination valves may be used
if approved by the Building Commissioner when the material and design
of such valves comply with the intent of these standards.
8.
Diving
Area - Minimum depths and area shall be as follows:
|
Boards
|
Maximum Distance Above Water
|
Minimum Depth Five Feet From Tip of the Diving
Board
|
Distance From Diving wall to Deepest Point Point
|
Distance From Deep Point to Transition
|
Minimum Overhang
|
Minimum Width to Center of Board
|
|---|---|---|---|---|---|---|
|
Deck Level*
|
18 inches
|
8 ft
|
10 ft
|
10 ft
|
2 1/2 ft
|
7 ft
|
|
Residential
|
30 inches
|
8 ft
|
11 ft
|
11 ft
|
2 1/2 ft
|
7 1/2 ft
|
|
1 Meter
|
39.37*
|
8 1/2 ft
|
12 ft
|
12 ft
|
3 ft
|
8 ft
|
|
*
|
For each one (1) inch of decrease of diving board height
below eighteen (18) inches, required minimum depth may be decreased
one (1) inch.
|
|
The overhang clearance above diving board to any obstruction
such as a ceiling, tree or shelter must be such that a diver cannot
strike such obstruction at any point of a dive.
|
9.
Pools
equipped with an outlet shall have said outlet located at the deepest
point and same shall be at least four (4) times the area of the discharge
pipe to reduce suction current and covered in such manner as to not
be readily removable by bathers.
10.
In
recirculating pools, proper pipe connections shall be provided to
permit water to flow to the recirculation pumps. No direct connection
to a storm sewer shall be permitted. All such connections shall be
by means of an indirect waste facility into a properly trapped fixture.
Pumping of pool drainage to an elevation of any possible sewer backing
may be needed in some special cases, and can be permitted by the Building
Commissioner. Plumbing work on pool and pool equipment shall be done
by a licensed qualified journeyman plumber.
11.
Inlets
for fresh or re-purified water shall be located to produce a reasonably
uniform circulation of water in the maintenance of a uniform concentration
of residual disinfectant throughout the entire pool without the existence
of "dead" spots.
12.
Where
the pool is supplied in whole or part by a public water supply system,
cross connections between the public water supply system and the swimming
pool water shall be eliminated. The pool piping system shall conform
to the approved plan and shall be proved watertight, by the contractor,
before covering or concealing.
13.
Runways,
at least three (3) feet wide, shall be placed adjacent to the pool.
Runways should be sloped one-fourth (¼) inch to the foot away
from the pool, and should be of material, approved by the Building
Commissioner which shall be of non-slip texture, and easily cleaned.
Grading in and about the pool area shall in the judgment of the Building
Commissioner avert surface water entering the pool. A walkway is recommended
from the dwelling or accessory building when long areas of open ground
or lawn must be traversed by bathers before reaching the pool area.
This is to prevent contamination of the feet.
14.
All
pools shall be white or of a light color on the inside surface.
15.
All
private pools shall be equipped with a filter and recirculating system
of sufficient capacity to insure a turnover rate of not more than
eighteen (18) hours. All others shall have a rate of not over sixteen
(16) hours.
a.
(See
"Section 520.130") Every swimming pool shall be equipped with a pressure
sand filter system or its equal approved by the Building Commissioner.
The filter system shall have sufficient capacity to provide a complete
turnover of the pool water in twenty-four (24) hours or less when
operated at a rate not to exceed five (5) gallons per minute per square
foot of filter area. The recirculating pump shall be of sufficient
capacity to backwash the filter at a rate of at least ten (10) gallons
per minute per square foot of filter area when operating against the
total head of the system. Pump motor shall not be operated by an overload
which exceeds the service factor.
b.
Every
filter system shall be provided with operating instructions. Filter
tanks shall be fabricated to ASME specifications for non-code pressure
vessels, and shall be built for a minimum of fifty (50) pound working
pressure with a safety factor of four (4). The filter under-drain
distributor shall have an effective diameter of at least forty percent
(40%) of the tank diameter. Tanks placed underground shall be steel
plate at least three sixteenths (3/16) inches in thickness with an
approved non-corrosive exterior coating.
c.
Tanks
above ground shall be supported in a safe, substantial manner satisfactory
to the Building Commissioner.
d.
Pool
piping shall be sized to permit the rated flows for filtering and
backwashing without exceeding the maximum head at which the pump will
provide such flows.
e.
In
general, the water velocity in the pool piping system shall not exceed
ten (10) feet per second. An outlet shall be placed at a deep point
in every pool for recirculation and drainage. Pool recirculation piping
shall be of copper or equal approved by the Building Commissioner
with a minimum wall thickness of type "L" copper tubing, brass or
other similar approved materials.
f.
Pool
pumps shall be equipped on the inlet side with an effective type hair
and lint strainer, approved by the Building Commissioner. The basket
of the strainer shall be non-corrosive and have an open screen surface
of at least ten times the pipe diameter.
g.
Filter
system shall be equipped with at least two (2) pressure gauges; one
on the effluent and one on the influent, an air relief, and a backwash
sightglass where backwash to receptor is not visible from backwash
valves.
h.
Backflow
protection must be provided where chemical feeding devices are connected
to the potable water supply and the potable water supply shall be
protected against backflow or back-siphonage.
i.
If
automatic feeder type filters are employed then the same shall be
constructed and equipped with the following: Pump strainer to catch
hair and lint; lever valves for minimum flow restrictions; piping
system with valve to permit adequate flow for controlled filter rate
and ample backwash; pump and motor with self-priming centrifugal pump
or flooded suction centrifugal type; an air relief system with automatic
by-pass to insure continual operation; sightglass for proper observation
of backwashing; top distributor and underdrain system designed to
distribute the water uniformly in the filter and backwash operation
to eliminate costly channeling; chemical feeder and venturi for costly
channeling; chemical feeder and venturi for automatic feeding and
proportioning of chemical coagulates; filter media composed of graduated
size and shape, chemically inert and hard in composition. The filter
must be connected to the pool by a vacuum suction line, main outlet
line and pool return line. The backwash line shall be connected to
a waste pipe. "Section 520.120" is a chart of capacity requirements
for residential capacities; pipe velocities and minimum pipe size
table.
16.
When
used, pool heaters must be approved by the Building Commissioner and
be of a type with a minimum of 10,000 B.T.U. input per hour, or 94,000
B.T.U. per hour for liquid propane gas "See 520.120". They may be
powered by natural or artificial gas or a combination or bottled gas
or oil and may be direct or indirect heaters. They shall include and
be equipped with the following: a thermostat, automatic safety pilot
to prevent burner from turning on unless pilot is lit, a pressure
regulator to insure constant pressure, a water pressure safety switch
to prevent main burners from coming on unless water is flowing under
satisfactory pressure, a high limit safety switch to shut off heater
if water gets too hot, a pressure relief valve to relieve any excessive
pressure within the tank. Direct injection of steam into the pool
for the purpose of heating the water shall not be allowed. Heating
coils in the pool shall not be allowed.
[CC 1976 §525.060; Ord. No. 765 §6, 4-25-1961]
All indoor swimming pools erected, constructed, altered or modified
hereunder shall meet the following further requirements:
They shall have windows or a skylight equal in area to at least
(¼) one-fourth of the surface area of the pool; provided, that
artificial light or chemicals may be used in lieu thereof if approved
by the Building Commissioner upon his/her finding that such substitutes
safely and adequately will inhibit the growth of algae.
[CC 1976 §525.070; Ord. No. 765 §7, 4-25-1961]
A.
All swimming
pools erected, constructed, altered or modified hereunder shall be
provided with the following apparatus and equipment and the following
minimum standards as to quality of water and disinfection shall be
met:
1.
All
pools over thirty (30) feet in length shall be provided with a pole
at least fifteen (15) feet long equipped with a knobbed life hook
and lifeline anchors at the transition point (where shallow and deep
water meet).
2.
The
ratio of the amount of available or excess chlorine in the water shall
not be less than 0.4 parts per million nor more than 0.6 parts per
million. A hypochlorite feeder may be used to controllably feed the
liquid form of hypochlorite. The feeder provides better regulation
than when this is done manually.
3.
The
total bacteria count at thirty-seven degrees (37°) Centigrade
does not exceed two hundred (200) colonies per milliliter and no bacillus
coli are present in a ten (10) milliliter portion.
4.
The
water at all times, when the pool is in use, shall show an alkaline
reaction in that the hydrogen ion content of the pool shall not fall
below 7.0 A "PH" of 7.2 or above, is preferred, up to 8.3.
Pools equipped with an automatic chemical disinfecting system
must have the system approved by the Health Commissioner before installation.
Pool owners shall be instructed, by the installing contractor, in
the care and maintenance of the pool including the use of high test
calcium hypochlorite (day chlorine) or sodium hypochlorite (liquid
chlorine) or an equally effective germicide and algaecide and the
proper PH (alkalinity and acidity) control.
5.
A black
disc six (6) inches in diameter on a white field placed in the deepest
water on the bottom of the pool should be clearly visible from the
side of the pool at distances up to ten (10) yards measured from a
line drawn across the pool through said disc.
7.
Visible
dirt on the bottom of the pool should be removed.
8.
In heated
pools, the temperature shall not be allowed to rise above seventy-eight
degrees Fahrenheit (78°F) and the water shall not be allowed to
enter the pool at a temperature above one hundred degrees Fahrenheit
(100°F).
9.
No "over the rim" fill spout will be accepted unless located
under a diving board or in a manner approved by the Building Commissioner
so as to not constitute a hazard. No fill spout shall project more
than one (1) inch beyond the inner wall and shall be so located as
to prevent back siphonage.
[CC 1976 §525.080; Ord. No. 765 §8, 4-25-1961]
A.
The pool
area shall be enclosed by a substantial protective barrier which shall
be adequate and sufficient to prevent persons, children or animals
from danger or harm and shall be equipped with a self-closing, self-latching
lock gate. A dwelling house or accessory building may be part of such
enclosure. Such protective barrier may be:
1.
A chain
link fence not less than four (4) feet in height.
2.
Abandoned
pools and unused pools, situated on residential premises which are
not occupied or dwelt in for periods of thirty (30) days or more shall
be drained or equipped with a swimming pool cover, approved by the
Building Commissioner as being adequate to prevent accidental drownings.
3.
Contractor
shall have the responsibility of properly protecting excavation sites,
in the course of construction, so that no undue hazard is created
by periods of rainfall or work stoppage.
[CC 1976 §525.090; Ord. No. 765 §9, 4-25-1961]
Fees for building occupancy permits or certificates of inspections
hereunder shall be determined and fixed at the same rates as by law
and ordinance shall apply to such building or occupancy permits or
certificates of inspections generally.
[CC 1976 §525.100; Ord. No. 765 §10, 4-25-1961]
The Health Commissioner may order the discontinuance of the
use of any swimming pool upon making a finding that same is unhealthful,
unsanitary or dangerous to such extent that life or property would
be endangered or threatened as a result thereof. Health authorities
shall have the right to inspect swimming pools when they deem same
necessary. It shall be a violation of this Chapter to deny access
to the pool to said health authorities.
[CC 1976 §525.110; Ord. No. 765 §11, 4-25-1961]
Any persons, firms, associations or corporations which engage
in the business of building, erecting, installing or constructing
swimming pools in this City shall be liable for any damage caused
by their negligence, carelessness or wilful conduct.
[CC 1976 App. A, Ch. 525; Ord. No. 765, 4-25-1961]
The following shall be the specifications for pool heaters:
|
Size
|
Natl. or Mfg. or Oil
|
Liquid Propane
|
Vent
|
Gas Conn.
|
Water Conn.
|
|---|---|---|---|---|---|
|
10,000 or less
|
103,000 B.T.U.
|
94,000 B.T.U.
|
5 in.
|
1/2 in.
|
1 1/2 in.
|
|
10 to 20,000
|
171,500
|
156,000
|
6 in.
|
3/4 in.
|
1 1/2 in.
|
|
20 to 50,000
|
240,000
|
218,000
|
7 in.
|
3/4 in.
|
1 1/2 in.
|
[CC 1976 App. B, Ch. 525; Ord. No. 765, 4-25-1961]
A.
The following
shall be specifications for various types of filters:
1.
Filter media specifications for sand filters.
a.
Filter
sand should be a hard, uniformly graded, silica material with effective
particle sizes, between 0.45 and 0.55 millimeters in diameter, with
uniformity coefficient of 1.45 to 1.69. There shall be no limestone,
clay or deleterious matter present.
b.
Filter
sand shall be no less than nineteen (19) inches in depth with a freeboard
of no less than nine (9) inches or more than twelve (12) inches.
c.
There
shall be no less than four (4) grades of rock, which shall be clean,
non crushed, rounded, non porous non calcareous material.
d.
The
total depth of the rock supporting bed shall be no less than fifteen
(15) inches and each grade shall be two (2) inches or greater in depth.
Each layer of rock shall be leveled to prevent intermixing of adjacent
grades.
e.
The
top layer shall vary in size between one-eighth (1/8) inch and one-fourth
(¼) inch. The next layer shall vary in size between one-fourth
(¼) inch and one-half (½) inch. The next layer shall
vary in size between one-half (½) inch and three-fourths (¾)
inch. The bottom layer shall vary in size between one (1) inch and
one and one-half (1½) inch.
2.
Diatomite type filters.
a.
Diatomite-type
filters should be designed for operation under either pressure or
vacuum. The design capacity shall not exceed three (3) gpm per square
foot of effective filter area for pressure filters and not exceed
two and one-fourth (2¼) gpm per square foot of effective filter
area for vacuum filters.
b.
The
determination of the filter area should be made on a basis of a true
and effective supported septum surface. In the case of fabric septums,
the area computation will be made on the basis of measurements of
the septum support in a reasonable constant plane. Area allowance
shall not be granted for folds in the septum fabric or deviations
in the septum surface which would easily bridge.
c.
The
tank containing the filter elements shall be constructed of steel,
plastic or other suitable material, which will satisfactorily provide
resistance to corrosion, with or without coating.
Pressure filters shall be designed for a working pressure equal
to the shutoff head of the pump, with a safety factor of 4. Vacuum
filters shall be designed to withstand the pressure developed by the
weight of the water contained therein and closed vacuum filters shall,
in addition, be designed to withstand the crushing pressure developed
under a vacuum of twenty-five (25) inches of mercury, both with a
factor safety of three point five (3.5).
In either type filter where the tank is fabricated from material
which is corroded by water, then a suitable corrosion resistant coating
shall be applied to retard such attack.
d.
The
filter elements shall be fabricated of corrosion resistant materials
throughout. They shall be designed to be adequately resistant to a
differential pressure between influent and effluent of not less than
the maximum pressure, which can be developed by the circulating pump
and shall be of adequate strength to resist any additional stresses
developed during the cleaning operation. The filter septum, on which
the filter-aid cake is deposited, shall be provided with openings,
the maximum dimensions of which shall be not greater than 0.005 inches.
e.
Provision
shall be made to introduce filter aid into the filter in such a way
as to evenly precoat the filter septum before the filter is placed
in operation. The amount of filter aid shall be selected to provide
at least the same protection to the filter septum as would be provided
by the use of .1 lbs. of diatomite filter aid per square foot of filter
area. Use of additional equipment to provide body feed to the filter
influent is optional. Where provided, such equipment shall have the
capacity to continuously and uniformly feed at a rate of not less
than 0.1 lbs. of filter aid per square foot of filter area per twenty-four
(24) hours.
f.
The
filter piping should be so designed that during the precoating operation
the effluent from the filter shall be recirculated or run to waste
and shall not be fed into the pool until free of filter aid. An exception
to this requirement may be made if the filter septum is of such construction
that no perceptible quantity of filter aid is introduced into the
pool when the effluent discharges therein.
g.
Where
dissimilar metals are used in the construction of the filter, which
may set up galvanic currents, then suitable provision shall be made
to resist electrolytic corrosion.
h.
Filters
should be so designed and installed that they can be readily disassembled
and the filter elements removed.
3.
Cartridge type filters.
a.
Cartridge
type filters are those where the cartridge itself is the filter aid.
Cartridge filters can be either pressure or vacuum type and are subject
to the same general piping and tank specifications as diatomite-type
filters. Replacement cartridges are divided into two types: Depth
and area. General specifications, however, are the same for both.
Cartridge filters shall not require the addition of any alocculating
agents such as ammonium alum, aluminum sulfate or potassium alum.
They shall be subject to the same requirements listed under "Mechanical"
for all types of filters. All types of cartridges shall have sufficient
structural strength to resist rupturing, channelling, collapsing,
or bursting at a maximum pressure differential of fifty (50) psi.
Cartridge seals shall be so designed as to prevent any by-passing
of unfiltered water. If provision is made for back-washing, it shall
be so arranged as to not permit any backwash water to enter the recirculating
system. No residue shall be permitted to remain in the filter housing
that could be picked up in the next filtering cycle.
b.
Cartridge
elements shall be divided into two types:
(1)
Depth type cartridges are elements where the porosity varies from
the inlet to the discharge surface. They shall have sufficient depth
to provide adequate dirtholding capacity and be designed for a flow
of no more than one (1) gallon per minute per five (5) cubic inches
of volume with a pressure drop not to exceed two (2) psi across clean
cartridges and not to pass any particulate matter larger than twenty-five
(25) microns.
(2)
Area or surface type cartridges are those which rely on the surface
area for their dirt-holding capacity and they should follow the same
flow per square foot of area as diatomite filters, namely; three (3)
gallons per minute per square foot of area for pressure filters and
two-and-one-fourth (2¼) gallons per minute per square foot
of filter area for vacuum filters.
(3)
Filter should be capable of filtering entire contents in eighteen
(18) hours or less.
(4)
Filter capacity shall be such that it need not be cleaned more frequently
than once every four (4) days under proper conditions of water and
operation.
(5)
All filters shall be designed so as to permit easy removal of the
cartridges.
