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Uniform Plumbing Code.
<br /> A-RT~CL~- 5
<br />ADOPTION AND
<br />5.01 Oonflicti~ Or~ces
<br />5.02 ~ffect
<br />5.0l Co~cti~ Prices, All or- - dinances of the City of Pleas-
<br /> tnton and all parts of ordin-
<br /> .~nces in conflict with this or-
<br />
<br /> ,'' dinance are hereb~ repealed.
<br /> ~ffec~, This ord~nce shall ,be
<br /> publshed in the Times ~t least
<br /> once, and shall become effec-
<br /> tive thirty (30) days after
<br /> final passage.
<br /> INTRODUCED: At a regular
<br />meeting this March 19, 1962 by
<br />Councilman Mc~Villiams.
<br /> APPROVED 'A.~- D ADOPTED
<br />'PHIS 2nd ,~AY O~ APRIL, 1962.
<br /> AYES: Councilman Bubics, Cairo,
<br />Lon~, Mc~Villiams and Harding.
<br /> NO~S: None.
<br /> ABS~T: None.
<br /> s/ X~A~E~ R, HARDING,
<br /> ~ay0r.
<br />ATTE ST:
<br /> s/ MARGARET L. ~NNER
<br /> City ~lerk.
<br /> (S~AL)
<br /> I certify that the foregoing is
<br />correct copy of Ordinance No. 342
<br />passed by the City Council of the
<br />City of Plea~n,ton, A~meda ~oun-
<br />ty, ~alifornia on the 2nd day of
<br />April, 1962.
<br /> s/ ~ARGARET L. CONNE,R,
<br /> City Cler~
<br />
<br /> for
<br />
<br /> of
<br />
<br />~eetion 1. DEFINITIONS ~ NO-
<br /> MENCLATURE
<br /> 1. ~VI~MINO POO~A~y
<br /> strutted pool, used for swimming
<br /> ~- bathing, over twenty-four inch-
<br /> (24") in depth, or with a sur-
<br /> ge area exce~ing 250 square
<br />
<br /> R~SIDENT~L SWIMML~G
<br /> ~L ~ Any constructed pool
<br /> which is used, or intended to be
<br /> used, as ~ swimming pool in con-
<br /> n~tion with a single family res-
<br /> idence and available only ~o the
<br /> family of the householder and h~s
<br /> private guests.
<br /> 3. Mu~I~ OUTLET~The outlet(s)
<br /> at the deep ~rtion of the
<br /> ~hrough which ~he ma~n flow of
<br /> water leaves the ~ol when being
<br /> drained or circulate.
<br /> 4. M~I~ SUCTIO~ ~ The line
<br /> Connecting the m~ln ou,tlet to ~he
<br /> pump
<br /> 5. YACUUM FITTIN~The fit-
<br /> ~ing in the wail of the pool
<br /> is used as a convenient outlet for
<br /> connecting ~he underwater suc-
<br /> tion cleaning equipment, or a re~
<br /> circulating s~mmer.
<br /> 6. VACUUH PIPI~'~The
<br /> which c~nnects the vacuum fit-
<br /> ting to ~he p~mp suction.
<br /> 7. RETU~ PIPIN~The pipiug
<br /> which ca~ies the filtered ~ter
<br /> from the filter to the pool
<br /> 8. INLET~The fittin~ or open-
<br /> in~ through which water e~ters
<br /> the pool.
<br /> 9. FA~E PIPING ~ The piping
<br /> with all valve~ and fittin~ which
<br /> is u~ed to conn~t the filter
<br /> tern together as a unit.
<br /> 10 RECIBCULATING PIPIN~
<br /> The pipin~ from the pool to ~the
<br /> filter and return to the pool,
<br /> through which the water eircu-
<br /> ,latem
<br /> 11. BAO~ASH PIPIN~ ~ The
<br /> pipin~ which extends from the
<br /> backwash outlet of the filter~ to
<br /> its terminus at ~he point of dis-
<br /> ~osal.
<br /> ~ FI~T~ Any material or
<br /> :atus by which wa~er is
<br />
<br /> [3. UND~D~AIN~n appurten-
<br /> ance at the bottom of the filter
<br /> to a~suve equal distribution
<br /> water through the filter media.
<br />
<br /> pa~t of a filte~ device which re-
<br /> tains the filter media.
<br /> 15, RECIP. CULATING SKI~[MER
<br /> pump suction used to skim tile
<br />
<br /> --A device connected with the
<br /> pool over a self-adjusting weir
<br /> and return the water to the pool
<br /> through the filter.
<br /> 16. FILT]D~< ME~DI,A -- The fine
<br /> material which entraps the sus-
<br /> pended particles.
<br /> 17 FILTER 'SAiN~)----A type of fil-
<br /> ter media.
<br /> 1S. FILTER ROCK--Graded rock
<br /> and gravel used to support filter
<br /> sand.
<br /> 19. FILTER AID A diatomite
<br /> type of filter media.
<br />20. DIATOMITE--(Dlatomaceous
<br />Earth) A type of filter aid.
<br />21. DIATOMITE TYPE FILTER
<br />--uk filter designed ,to be used
<br />xvith filter aid.
<br />22. SK, TMMER-FILTER--A re-
<br />circulating skimmer with a filter
<br />forming an integral part of the
<br />device.
<br />23. FILTE,R SEPTUM--That part
<br />of the filter element in a dlato-
<br />mite-type filter, upon which a
<br />cake of diatomite is deposited.
<br />24. PRECOAT -- In a diatomite-
<br />type filter the Initial coating of
<br />filter aid placed on the filter sop-
<br />turn at the start of the filter
<br />cycle.
<br />25. BODY F'EEID----Filter aid fed
<br />into a diatomite - type filter
<br />throughout the filtering cycle.
<br />26. FILTER CARTRIDGE -- A
<br />disposable or renewable filter el-
<br />ement which employs no filter
<br />aid.
<br />27. CARTRIDGE FILTER--A fil-
<br />ter using filter cartridges.
<br />28. DF, S. IC-N RATE--The aver-
<br />age flow rate over the filtration
<br />cycle
<br />29. POOL DEPTHS---The distance
<br />between the floor of the pool and
<br />the maximum operating level
<br />when pool is in use.
<br /> ~0. POOL WALK-DECKS -- Th,:
<br /> surfaced area around the pool.
<br />31. WID'PIt Alq~D LENGTI-I --
<br />Shall be determined by actual
<br />water dimensions.
<br /> 3.2. SAFETY ROPE
<br />Anchors at transition point.
<br /> 33. TRAN.SITION POLNrT--Point
<br /> where floor slope changes be-
<br /> tween shallow and deep area.
<br /> 34. POOL WALL---That portion
<br /> of the pool that is vertical or in-
<br /> clined more than 45' to the ver-
<br /> tical or inclined more than 45'
<br /> to the vertical from the horizon-
<br /> tal.
<br />
<br /> Vertical 11
<br /> .... ~ sec~io~
<br />
<br /> lIorizon~l
<br />
<br /> Horizootsl
<br />
<br /> ~o
<br />
<br /> wall section ~erticaX
<br />
<br /> ~5. POOL FLOOR--THat portton
<br /> of the pool that is horizontal or
<br /> inclined less than 45° to the ver-
<br /> tical from the horizontal.
<br />
<br /> Vertical
<br />
<br /> '
<br />
<br />Floor . ~ Floor
<br />Section y' -..x. I x:~?.::[~
<br />1,5o ;". u ': ,x~b~: i,~.:.::~,~
<br />
<br />Horizontal
<br />
<br />Horizontal
<br />
<br />rloor -' [ .
<br />~ection
<br /> Ver~ical ~J~
<br />
<br />Section 2. CONSTRUCTION
<br /> The design construction, as well
<br /> as all equipment and materials,
<br /> shall comply with requirements
<br /> herein.
<br /> 1. STRUCTURAL D~SIO~--The
<br /> pool structure shall be engineer-
<br /> ed and designed to ~vithstand the
<br /> expected fo~ces to which it will
<br /> be subjected.
<br /> 2. WALL SLOPE~To a depth
<br /> up to five (5) feet from the top,
<br /> the wall slope shall not be more
<br /> than two (2) feet horizontal in
<br /> five (5) feet vertical.
<br /> 3. FLOR SLOPES--The slope of
<br /> the floor on the shallow side of
<br /> transition point s~ll not exceed
<br /> one (1) foot vertical to seven (7)
<br /> feet horizontal. The transition
<br /> point betwen shallow and deep
<br /> water shall not be more than five
<br /> (5) feet deep.
<br /> 4. In climates subject to freezing
<br /> temperatures, the pool shell and
<br /> appurtenances, piping, filter sys-
<br /> tem, pump and motor and other
<br /> components will be so designed
<br /> and constructed to be easily win-
<br /> terized and/or protected from d~
<br /> ,leterious effect of frost and
<br /> freezing.
<br /> 5. DIVING A R E A Minimum
<br /> depths and area shall be as fol-
<br /> lows:
<br />
<br />Deck Level* 18"
<br />Residential 30" 8' 11'
<br />1 Meter 39.37" 8~' 12'
<br />
<br />Deck Level*
<br />Residential
<br />I Meter
<br />
<br /> The ~verhead clearance above the
<br /> diving board to any obstruction
<br /> must .be such that a diver can-
<br /> not strike such obstruction at
<br /> any point of a dive. The minimum
<br /> clearance should be no less than
<br /> 13 feet.
<br /> * For each one (1) inch of de-
<br /> crease of diving board height be-
<br /> lo~r 18 inches, required minimum
<br /> depth may be decreased one (1)
<br /> inch.
<br />Section 3. MECH~.NICAL
<br />
<br /> 1. GENERAL---Every pool shall
<br /> be equipped with a recirculating
<br /> system capable of filtering the
<br /> entire contents of the pool in
<br /> eighteen (18) hours, or less.
<br /> a. Filters shall be capable of[
<br /> maintaining the clarity of theI
<br /> water to permit the ready iden-
<br /> tification, through an 8-foot
<br /> depth of water, of a disc 2" in[
<br /> diameter. ~vhich is divided into!
<br /> four (4) quadrants in alternate
<br /> colors of red and white.
<br /> b. Fil~er capacity shall be such
<br /> that it need not be cleaned more
<br /> frequently than once every four
<br /> (4) days under proper condi-
<br /> tions of water, pool and filter
<br /> operation.
<br /> c. All pressure filter shall be
<br /> equipped with tnfluent and ef-
<br /> fluent pressure gauges to deter-
<br /> mine the pressure differential
<br />
<br /> and frequency' of cleaning.
<br />d. All pressure filter systems
<br />shall be equipped with' an air
<br />release at the high point in the
<br />system. Each sand filter shah
<br />be provided with a visual means
<br />of determining when the filter
<br />has been restored to original
<br />cleanliness.
<br />e. Operating instructions shall be
<br />posted on every filter system.
<br />ill valves shall be properly des-
<br />ignated, indicating their purpose._
<br />2. SA~/D PRESSURE FILTERS
<br />--Sand filter systems shall be de-
<br />signed and installed to operate
<br />at a rate not to exceed five (5)
<br />gallons per minute, per squ~re
<br />toot of filter area and to back-
<br />wash at a minimum rate of ten
<br /> (10) gallons per minute, per
<br />square foot of surface area.
<br /> a. Filter tanks shall be fabricat-
<br /> ed to 1956 AS-¥IE specifications
<br /> for non-code pressure vessels,
<br /> with the exception that standard
<br /> type dished and flaged heads
<br /> may be used. Tanks shall be
<br /> built for a minimum of fifty
<br /> (50) pounds working pressure
<br /> and tested at 150 PSI. The filter
<br /> underdrain shall have an effec-
<br /> tive distribution of at least
<br /> twenty-five (25) per cent of th, e
<br /> cross sectional area of the tang.
<br /> Tanks placed underground shall
<br /> be steel plate at least 3/16 inch-
<br /> es in thickness, with an approv-
<br /> ed non-corrosive exterior coat-
<br /> ing.
<br />b. Filter tanks shall be suported
<br />in a manner to prevent tipping
<br />- or settlinK,
<br />3. FILTER MEDIA SPECIF'iCA-
<br />TION'S FOR ~AN-D FILTERS
<br />a. Filter sand shall be a hard,
<br />uniformly graded, silica material
<br />with effective particle sizes, be-
<br />tween 0.45 and 0.55 millimeters
<br />in diameter, with uniformity co-
<br />efficient to 1.45 to 1.69. There
<br />shall be no limestone, clay or
<br />deleterious matter present. Oth-
<br />er types of filter media are
<br />ceptable providing the particle
<br />size is within .30 millimeters of
<br />that specified for sand and with
<br />a uniformity of 1.75 maximum
<br />and will not deteriorate or dis-
<br />solve under normal use.
<br />b. Filter sand shall be no less
<br />· than 19" in depth with a free-
<br />board of no less than 9" or more
<br />than 12".
<br />c. There shall be no less than
<br />four (4) grades of rock or suit~
<br />able supporting media which
<br />shall .be clean, non-crushed,
<br />rounded, non-porous, non-calcar-
<br />eous material.
<br />d. The total depth of the rock
<br />supporting bed shall be no less
<br />than 15" and each grade shall
<br />be 2" or greater in depth. Each
<br />layer of rock shall be leveled to
<br />prevent intermixing of adjacent
<br />grades.
<br />e. The top layer shall vary in
<br />size between 1/8" and 1°4''. The
<br />next layer shall vary in size
<br />tween 1/4" and 1/2. The next.
<br />layer shall vary in size between
<br />1/2" and ~/4". The bottom
<br />er shall vary in size between
<br />and I 1[~".
<br />f. Sand filters varying from the
<br />aq~ove specified depth of filter
<br />bed, su,pporting media, and free-
<br />board requirements shall be
<br />deemed acceptable provtding
<br />their field use and approval by
<br />the City Approved Laboratory
<br />demonstrates equivalent func-
<br />tional performance.
<br /> al' Sand filters employing spec~
<br /> ly engineered underdrain Sys-
<br /> tem and fewer layers or less
<br /> depth of supportLug gravel me-
<br /> dia shall be deemed acceptable
<br /> providing their ,field use and ap-
<br /> proval by the City Approv. ed
<br /> Laboratory demonstrates equiv-
<br /> alent functional performance.
<br /> 4. DIATOMITE TYPE FILTERS
<br /> a. Diatomite-type filters shall be
<br /> designed for operation under
<br /> either pressure or vacuum. The
<br /> design capacity shall not exceed
<br /> 3 gpm per square foot of ef-
<br /> fective filter area for pressure
<br /> filters and not exceed 2-1/4 gpm
<br /> per square foot of effective fil-
<br /> ter area for vaccum filters.
<br /> ,b. The detemmination of the fil-
<br /> ter area shall ~be made on a basis
<br /> of a true and effectiv'e support-
<br />
<br />
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