HomeMy WebLinkAboutR-1996-023 Pump station designRESOLUTION NO.R-96-
23
A RESOLUTION adopting a design standard for sewage pump and lift
stations for the City of Yakima sewerage system.
WHEREAS, the City of Yakima owns and operates wastewater
collection and treatment facilities in accord with applicable Federal,
State and Local regulations; and
WHEREAS, the City has prepared a standard engineering design to
secure vital sewage collection pump station capability in accord with
operational, maintenance and regulatory requirements; and
WHEREAS, adopting the attached "City of Yakima Lift Station
Design Standard" is in the best interest of the City of Yakima, now,
therefore
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
YAKIMA:
The City of Yakima adopts a design standard for sewage pump and
lift stations for the purposes mentioned above, a copy of which design
standard is attached hereto and by reference made a part hereof.
ADOPTED BY THE CITY COUNCIL THIS 90
1996.
ATTEST:
c_vv,-c
City Clerk
psds-res
February 16, 1996 cw
DAY OF
CITY OF YAKIMA
LIFT STATION DESIGN STANDARDS
G&O NO. 90372
Gray & Osborne, Inc.
Yakima
1/12/96
CITY OF YAICIMA
LIFT STATION DESIGN STANDARDS
PART 1
GENERAL REQUIREMENTS
NO. DESCRIPTION PAGE
1. Purpose and Scope GR -1
2. Referenced Criteria, Standards, and Sewerage Plans GR -1
3. Planning and Design Approval GR -1
4. Lift Station Design Considerations GR -2
CITY OF YAIQMMA
LIFT STATION DESIGN STANDARDS
PART 2
STANDARDS FOR MATERIALS AND
METHODS OF CONSTRUCTION
DIVISION - 3
NO. DESCRIPTION PAGE
3.0 CONCRETE 3.1-1
3.1 PRECAST CONCRETE LIFT STATION 3.1-1
3.1.1 Scope 3.1-1
3.1.2 Materials.. 3.1-1
3.1.3 Construction 3.1-1
3.2 PRECAST CONCRETE VAULTS 3.2-1
3.2-1 Scope 3.2-1
3.2-2 Materials 3.2-1
3.2-3 Construction 3.2-1
DIVISION -11
NO. DESCRIPTION PAGE
11.0 EQUIPMENT 11.1-1
11.1 SUBMERSIBLE PUMPS AND ACCESSORIES 11.1-1
11.1-1 General 11.1-1
11.1-2 Materials 11.1-1
11.1-2.1 Pumps 11.1-1
11.1-2.2 Pump Tests 11.1-3
11.1-2.3 Pump Warranty 11.1-3
11.1-2.4 Documentation 11.1-3 -
11.1-2.5 Site Tests 11.1-4
DIVISION -11
NO. DESCRIPTION PAGE
11.1-2.6 Capacity Conditions 11.1-4
11.1-2.7 Mix -Flush Valve 11.1-4
11.1-2.8 Pump Guides and Rails 11.1-4
11.1-2.9 Pump Access Frames 11.1-4
11.1-3 Construction 11.1-5
11.1-3.1 General 11.1-5
11.1-3.2 Startup Service 11.1-5
DIVISION -15
NO. DESCRIPTIONPAGE
15-0 PIPING, VALVES, FITTINGS AND ACCESSORIES 15-1
15-1 GENERAL ...15-1
15-2 MATERIALS ...15-1
15-2.1 General 15-1
15-2.2 Ductile Iron Pipe and Fittings 15-1
15-2.3 PVC Pipe, Fittings, and Accessories 15-1
15-2.3(1)Gravity Sewer 15-1
15-2.3(2)Pressure :Pipe 15-1
15-2.4 Miscellaneous Fittings 15-2
15-2.4(1)Dresser-Type Flexible Couplings 15-2
15-2.4(2)Calder-Type Flexible Couplings 15-2
15-2.5 Manual Valve Operators 15-2
15-2.6 Valve Boxes 15-2
15-2.7 Valves 15-3
15-2.7(1)Gate Valves 15-3
15-2.7(2)Check Valves 15-3
15-2.7(3)Plug Valves 15-3
15.3 CONSTRUCTION 15-3
15-3.1 General 15-3
15-3.2 Gravity Sewer Piping 15-4
15-3.3 Force Main 15-4
15-3.4 Flanged Piping 15-4
15-3.5 Mechanical Joint Piping 15-4
15-3.6 Flexible Couplings 15-5
15-3.7 Pipe Bedding 15-5
15-3.8 Testing 15-5
DIVISION -16
NO. -DESCRIPTION PAGE
16-0 ELECTRICAL 16-1
16-1 GENERAL 16-1
16-1.1 Scope........ 16-1
16-1.2 Reference Specifications 16-1
DIVISION -16
NO. DESCRIPTION PAGE
16-1.3 Drawings 16-1
16-1.4 Tests and Inspection 16-2
16-2 MATERIALS 16-2
16-2.1 General 16-2
16-2.2 Raceways 16-3
16-2.3 Conductors 16-3
16-2.4 Fittings and Boxes 16-4
16-2.5 Float Switches 16-4
16-2.6 Pullboxes 16-4
16-3 INSTALLATION 16-5
16-3.1 General 16-5
16-3.2 Equipment 16-5
16-3.3 Raceways 16-6
16-3.4 Conductors 16-7
CITY OF YAKEVIA
LIFT STATION DESIGN STANDARDS
PART 1
GENERAL REQUIREMENTS
J:SPECS193072 1/1286
CITY OF YAKIMA
LTFT STATION DESIGN STANDARD
GENERAL REQUIREMENTS
1. Purpose and Scope
These standards are intended to apply to all new lift station construction within
the City of Yakima sewer service area. They shall also apply insofar as possible
to the upgrade of the existing sewage lift stations owned and operated by the City.
The standards cover general requirements and the materials and methods of
construction for the lift stations.
2. Referenced Criteria, Standards, and Sewerage Plans
Unless otherwise noted in these standards the applicable portions of most
currently adopted editions and revisions of the following criteria, standards, and
sewerage plans shall be adhered to during design and construction of any lift
station.
Washington State Department of Ecology - Criteria for Sewage
Works Design
Washington State Department of Transportation/American Public
Works Association - Standard Specifications for Road, Bridge and
Municipal Construction (WSDOT/APWA Standard Specifications)
City of Yakima - Comprehensive Plan for Sewage System
3. Planning and Design Approval
Lift station plans and specifications shall be submitted to the City of Yakima
Engineering Division for review and approval prior to construction. The plans
and specifications shall be accompanied by a design report, which includes an
engineering analysis of the determination of the lift station location, capacity
requirements, and major design elements including but not limited to pump
sizing, force main sizing and emergency storage requirements. The design report
shall also demonstrate that the proposed lift station is coordinated with the City's
7\93072\STANDARD 1
on-goin.g sewer system planning and the most recently adopted update of the City
of Yakima Comprehensive Plan for Sewerage System. To avoid delays it is
recommended that the design report be submitted prior to submittal of the plans
and specifications.
The City will submit plans and reports to the Department of Ecology for approval
where necessary. Any changes required to obtain City and/or Department of
Ecology approval shall be made by the proponent prior to construction.
4. Lift Station Design Consideratioiyi
Pumping Rate and Number of TJnits - At least two pump units shall be
provided, each capable of handling the expected maximum flow.
Where three or more units are provided, they shall be designed to fit actual
flow conditions and must be of such capacity that with any one unit out of
service, the remaining units will have capacity to handle the maximum
sewage flow.
When the station is expected to operate at a flow rate less than 0.5 times
the average design flow for an extended period of time, the design shall
address measures taken to prevent septicity due to long holding times in
the wet well.
Pump Openings - Pumps shall be capable of passing spheres of at least 3
inches in diameter. Pump suction and discharge openings shall be at least
4 inches in diameter.
Emergency Storage - Sufficient wet well capacity shall be provided for the
peak two-hour flow volume (above the high level alarm) which the lift
station is anticipated to receive at design conditions.
J\93072\STANDARD 2
Force Mains
Size - Minimum size force mains should be not less than four (4) inches in
diameter.
Velocity - At pumping capacity, a minimum self -scouring velocity of 2
feet per second (fps) should be maintained. Velocity should not exceed 6
feet per second.
Termination - The force main should enter the receiving manhole with its
centerline horizontal and with an invert elevation that will ensure a smooth
flow transition to the gravity flow section; but in no case shall the force
main enter the gravity sewer system at a point more than 1 foot above the
flow line of the receiving manhole The design should minimize
turbulence at the point of discharge.
Consideration shall be given to the use of inert materials or protective
coatings for the receiving manhole to prevent deterioration as a result of
hydrogen sulfide or other chemicals where such chemicals are suspected to
be present because of industrial discharges or long force mains.
Materials of Construction - The pipe material shall be adapted to local
conditions, such as character of wastes, soil characteristics, exceptionally
heavy external loadings, internal erosion, corrosion, and similar problems.
Corrosion resistant pipe materials and/or corrosion resistant pipe lining
shall be utilized wherever practical. All pipelines less than four (4) feet
below finish grade shall be rigid pipe under otherwise approved by the
City Engineer.
1\93072\STANDARD 3
CITY OF YAKIMA
LIFT STATION DESIGN STANDARDS
PART 2
STANDARDS FOR MATERIALS
AND
METHODS OF CONSTRUCTION
J:SPECS\93072 1/12/96
DIVISION 3 CONCRETE
3.1 PRECAST CONCRETE LIFT STATION
3.1-1 SCOPE
This section covers the precast concrete structure for the lift station.
3.1-2 MATERIALS
Lift station precast concrete barrel sections shall conform to ASTM C-478 and shall be
eight (8) feet inside diameter. Top and base slabs shall be cast under controlled
conditions and shall meet the requirements for reinforced concrete in accordance with
the applicable portions of the WSDOT/APWA Standard Specification. Hatch to be
embedded in precast top slab shall be as specified in Article 11 - EQUIPMENT.
3.1-3 CONSTRUCTION
Excavation must allow for the overall assembly height of the pump station structure as
indicated on the Plans. Bedding material shall be aded level immediately prior to
structure placement. All joints of the precast manhole sections shall be gasketed to
provide full watertight construction.
All pipe penetrations through the walls, joints, pick holes, etc. shall be grouted with
non -shrink grout after pipe has been placed.
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3.1-1
1/12/96
3LEREE AST CONCRETE YA]tJLIS
3.24 SCOPE
This section covers the precast concrete valve vaults required for the lift station.
3.2-2 MATERIALS
Precast concrete vaults shall be of the sizes and types as shown on the drawings and
shall be manufactured by the Utility Vault Company, Auburn, Washington or equal.
All precast units, including lids and access hatches, shall be designed and constructed
to support H2O wheel loadings, unless otherwise noted on the drawings. Access
hatches shall be complete with padlock and recessed padlock box with lid. Padlocks
shall be keyedto the City's master. Access batch frames and lids shall be aluminum or
stainless steel rated for H-20 live load capacity.
3.2-3 CONSTRUCTION
Excavation must allow for the overall assembly height of the vault and 4 inches of sant
or gravel bedding material. Bedding material shall be graded level and thoroughly
compacted immediately prior to vault placement. Gaskets shall be used in joints
between sections of the precast vault.
All pipe penetrations through the vaultwalls and floor shall be grouted with non -shrink
grout after pipe has been placed.
J.\SPECS\93072
3.2 - 1
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DIVISION 11 EQUIPMENT
11.1 SUBMERSIBLE PUMPS AND ACCESSORIES
11.1-1 GENERAL
Submersible pumps required for the lift station shall be manufactured by Flygt
Corporation to match the City standard for this type of pump, and shall be as specified
herein.
11.1-2 MATERIALS
11.1-2.1 PUMPS
Submersible pumps shall be capable of handling raw, unscreened sewage. The discharge
connection elbow shall be permanently installed in the wet well along with the discharge
piping. The pumps shall be automatically connected to the discharge connection elbow
when lowered into place, and shall be easily removed for inspection or service. There
shall be no need for personnel to enter pump well. Sealing of the pumping to the
discharge connection elbow shall be accomplished by a simple linear downward motion
of the pump. A sliding glide bracket shall be an integral part of the pump unit. The
entire weight of the pump unit shall be guided by no less than two guide bars and pressed
tightly against the discharge connection elbow with metal -to -metal contract. Sealing of
the discharge interface by means of diaphragms or other devices will not be acceptable.
No portion of the pump shall bear directly on the floor of the sump. The pump, with its
appurtenances and cable, shall be capable of continuous submergence underwater without
loss of watertight integrity to a depth of 65 feet.
Major pump components shall be of gray cast iron, Class 30 with smooth surfaces devoid
of low holes and other irregularities. Where watertight sealing is required, O -rings
made of nitrile rubber shall be used. All exposed nuts and bolts shall be of stainless steel
304. All surfaces coming into contact with sewage, other than stainless steel, shall be
protected by an approved sewage resistant coating. Impeller shall be coated with Rilsan.
Pump exterior shall be sprayed with PVC epoxy primer and with chloric rubber paint
finish.
All mating surfaces where watertight sealing is required shall be machined and fitted with
nitrile rubber O -rings. Fitting shall be such that sealing is accomplished by metal -to -
metal contact between machined surfaces. This will result in controlled compression of
nitrile rubber O -rings without requirement of specific torque limit. No secondary sealing
compounds, rectangular gaskets, elliptical O -rings, grease or other devices shall be used.
The cable entry water seal design shall preclude specific torque requirements to insure a
watertight and submersible seal. The cable entry shall be comprised of a single
cylindrical elastomer grommet, flanked by washers, all having a close tolerance fit
against the cable outside diameter and the entry inside diameter and compressed by the
entry body containing a strain relief function, separate from the function of sealing the
cable. The assembly shall bear against a shoulder in the pump top. The cable entry
bunction chamber and motor shall be separated by a stator lead sealing gland or terminal
oard, which shall isolate the motor interior from foreign material gaining access through
the pump top. Epoxies, silicones. or other secondary sealing systems shall not be
considered acceptable,
The pump motor shall be squirrel -cage, induction, shell type design, housed in an air-
filled, watertight chamber with a NEC code letter of "H" or better. The stator winding
/:SPECS\93072
1/12/96
and stator leads shall be insulated with moisture resistant Class F insulation which will
resist a temperature of 1550 C. (3110 F.). The stator shall be dipped and baked three
times in Class F varnish. The motor shall be designed for continuous duty, capable of
sustaining a minimum of fifteen (15) evenly spaced starts per hour without external.
cooling. The rotor bars and short circuit rings shall be made of aluminum.
The junction chamber, containing the terminal board, shall be sealed from the motor by
elastometer compression seal (0 -ring). Connection between the cable conductors and
stator leads shall be made with threaded compressed type binding post permanently
affixed to a terminal board and thus perfectly leak proof.
The pumps shall be designed such that 'the motors are sufficiently cooled by the liquid in.
the wet well. A water jacket or external cooling provisions shall not be acceptable.
Pump motors shalloperate at a maximum of 257 degrees F and be equipped with a sensor
in each winding. Each pump motor shall be equipped with sensor and a relay to be
installed in the control panel to warn of moisture in the pump and to shut -down the pump
if overheated. These shall be used in conjunction with and supplemental to external
motor overload protection. The moisture/temperature monitoring system shall be Flygt
mini -CAS or equal.
Each pump shall be provided with an oil chamber for the shaft sealing system. The oil
chamber shall house a pressure equalizer ring filled with air for oil pressure
compensation. Seal lubrication shall require an oil chamber capacity no greater than 1.5
gallons (6 liters). The drain and inspection plug, with positive anti -leak seal, shall be
easily accessible from the outside.
The pump shaft shall be .ANSI Type 420 stainless steel with two (2) permanently
lubricated bearings with a minimum B10 bearing life rating of 25,000 hours. The upper
bearing shall be a single row deep groove ball bearing, and the lower bearing shall be a
two row angular contact ball bearing. As an alternative, the pump shaft may be
constructed of ASTM A576 GR 1045 carbon steel protected by an ASTM A276 Type
420 Stainless Steel Shaft Sleeve.
Each pump shall be provided with a tandem mechanical rotating shaft seal system. Seals
shall run in an oil reservoir. Lapped seal faces must be hydrodynamically lubricated at a
constant rate. 'The lower seal unit, between the pump and oil chamber, sall contain one
stationary and one positively driven rotating tungsten carbide ring. The upper seal unit,
between the oil sump and motor housing, shall contain stationary tungsten carbide ring.
Each interface shall be held in contact by its own spring system. The seals shall require
neither maintenance nor adjustment, but shall be easily inspected and replaceable.
The impeller shall be of gray cast iron, Class 30, dynamically balanced, double shrouded,
non -clogging design having a long thrulet without acute turns. The impeller shall be
capable of handling solids, fibrous materials, heavy sludge and other matter found in
normal sewage applications. The impeller shall be of a single or two vane design. The
pump manufacturer shall, upon request, furnish mass moment of inertia data for the
proposed impeller. The impeller shall be capable of passing a minimum 3 inch solid
sphere. The fit between the impeller and the shaft shall be a sliding fit with one key.
The volute shall be of a single piece design and shall have smooth fluid passages large
enough at all points to pass any size solid which can pass through the impeller.
A wear ring system shall be installed to provide efficient sealing between the volute and
impeller. The wear ring shall consist of a stationary ring made of nitrile rubber molded
J.SPECS\93072
11.1 - 2
1/12/96
with a steel ring insert which is drive -fitted to the volute inlet, and rotating stainless steel
ANSI 304 ring which is drive -fitted to the impeller eye.
The pump motor cable installed shall be suitable for submersible pump application.
Cable sizing shall conform to NEC, ICEA specifications for pump motors.
Submersible pumps shall be manufactured by Flygt Corporation to match the City
Standard.
11.1-2.2 PUMP TEST
The pump manufacturer shall perform the following inspections and tests on each pump
before shipment from factory:
A. Impeller, motor rating and electrical connections shall first be checked for
compliance to the customer's purchase order.
B. A motor and cable insulation test for moisture content or insulation defects
shall be made.
C. Prior to submergence, the pump shall be run dry to establish correct
rotation and mechanical integrity.
D. The pump shall be run 30 minutes submerged, a minimum of six (6) feet
underwater.
E. After operational test (D), the insulation test (B) is to be performed again.
A written report stating the foregoing steps have been done shall be supplied with each
pump at the time of shipment.
The pump cable end will be sealed with a high-quality protection covering to make it
impervious to moisture or water seepage prior to electrical installation.
11.1-2.3 PUMP WARRANTY
The pump manufacturer shall warrant the units being supplied to the City against defects
in workmanship and material for a period of five (5) years or 10,000 hours under normal
use, operation and service. The warranty shall be m printed form and apply to all similar
units.
11.1-2.4 DOCUMENTATION
Manufacturer shall supply five (5) sets of its standard submittal drawings, operating and
maintenance instruction manuals and parts list. Standard submittals will consist of:
A. Pump Outline Drawing.
B. Control Data.
C. Typical Installation Guides.
J:SPECS\93072
11.1 -3
1/12/96
D. Technical Manuals.
E. Parts Lists.
11.1-2.5 SITE TESTS
The pump shall be tested at start-up, and voltage, current, and other significant
parameters recorded. The manufacturer shall provide a formal test procedure and forms
for recording data.
11.1-2.6 CAPACITY CONDITIONS
Submersible pumps shall have the following motor characteristics:
Note:, Pumps shall be Factory Mutual (FM) explosion proof- Class I, Division I, Groups
C and D, where indicated.
Pump capacities and discharge characteristics shall be suitable for the lift station in which
they are incorporated.
11.1-2.7 MIx•FLUSH V L.VE
There shall be furnished and installed on at least one pump in each lift station a Flygt
Mix -Flush valve to mix the wastewater automatically at the start of that pumps pump
cycle. The valve is to be mounted directly on a raised boss on the pump volute to direct
part of the pumped discharge to flush solids into suspension at the start of each pumping
cycle. The valve shall be positioned on the pump volute, with raised boss, to provide a
nonclogging flow operation.
The valve shall be open at the beginning of each pumping cycle and close under full
pump discharge pressure after a preselected time. The valve shall be operated by the
liquid being pumped through a self-contained hydraulic system. No external power
source should be required to operate the valve.
A means of adjustment shall be provided to achieve a :30 second flushing period for
different head and flow conditions.
11.1-2.8 PUMP GUIDES ANI)$Ajy;z
Lower guide bar holders shall be integral with the pump discharge connection. Guide
bars shall be standard weight stainless steel pipe of the size required by the pump
manufacturer. The guide bars shall not support any portion of the weight of the pump.
Guide bar brackets, including intermediate guide bar brackets shall be the pump
manufacturer's standard design and shall be stainless steel or fusion bonded epoxy coated.
Each pump shall be furnished with an adequate length of stainless steel cham and nylon
rope to be used with a Grip -Eye hoist system as manufactured by Flygt Corporation.
Provide one Grip -Eye.
11.1-2.9 PUMP ACCESS FRAMES
A duplex size pump access frame shall be provided for each pair of pumps. The pump
access frame shall be the manufacturer's standard design. Access frames shall be
complete with padlock and recessed padlock box with lid. Padlocks shall be keyed to the
Owner's master. Frames and lids shall be aluminum or stainless steel rated for H-20 live
load capacity.
J.SPECS\93072
11.1 -4
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11.1-3 CONSTRUCTION
11.1-3.1 GENERAL
Submersible pumps shall be installed as shown on the drawings and in strict accordance
with pump manufacturer's recommendations. Pump bases shall be securely anchored to
the concrete using stainless steel bolts or stainless steel expansive anchors equivalent in
size and strength to that as recommended by the manufacturer.
All pumps shall be checked for rotation prior to lowering into the liquid. When pumps
are put into service, amperage draw on each phase of power shall be checked
immediately. A report summarizing all test data collected and check out procedures
performed at the time the pumps are put into service shall be submitted to the City.
11.1-3.2 STARTUP SERVICE
The services of a factory trained representative of the submersible pump manufacturer
shall be provided. Services shall include the supervision of equipment startup and
instruction of the City's personnel in the operation and maintenance of the equipment.
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11.1 - 5
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DIVISION 15 'PIPING, VALVES, FITTINGS AND ACCESSORIES
15-1 GENERAL
The work described in this section consists of furnishing and installing all pipe, tubing,
fittings, valves„ operators, hangers, supports, thrust blocks, joint materials, and
appurtenances required for installation of the Lift Station, as shown on the Standard Plans
and as specified herein.
15-2 MATERIALS
15-2.1 GENERAL
All piping, valves, fittings and accessories shall be new and of good quality. Re -use of
existing salvaged piping, valves, fittings and accessories will not be allowed.
15-2.2 DUCTILE IRON PIPE AND ffFT1NGS
Ductile iron shall be centrifugally -cast pipe conforming to ANSI A21..51, Class 52,
bituminous -coated 01 s�� r , . • • . _ with ANSI A21,4. Provide an
exterior bituminous coating for all buried pipe. Class 53 will be required where flanged
spools are called for and where pipes .pass through concrete structures.
Pipe joints shall be Tyton-type (push -on) or mechanical joint, unless otherwise specified
or indicated. Mechanical joints shall comply with ANSI A21.11. Flanges shall comply
with ANSI B16.1, Class 125. Flange gaskets shall be full face.
Fittings shall be cast iron and shall comply with ANSI A21.110, bituminous- coated inside
and out, 250 psi pressure. Mechanical joint fittings may be ductile iron Class 350
compact fittings, bituminous coated inside and out, manufactured in conformance with
ANSI/AWWA C153/A21.53-84.
15-2.2; PVC PIPE, FITTINGS. AND_ACCESSORIES
15-2.3 1 W''! •
Gravity sewer pipe shall be polyvinyl chloride (PVC), rubber ring joint, ASTM D3034,
SDR35. PVC gravity sewer fittings shall conform to Section 9-05.12 of the Standard
Specifications.
15-2.3(2) PRESSURE/IEE
PVC pressure pipe shall be polyvinyl chloride conforming to AWWA C900, Class 150.
The pipe shall bear the seal of the National Sanitation Foundation for potable water pipe.
The Contractor shall furnish the City an affidavit that all delivered materials comply with
this specification. In addition to the affidavit, the manufacturer shall furnish a sample
marked in accordance with AWWA C900.
Pippeoints shall conform to ASTM D3139 using a restrained rubber gasket conforming to
ASTM 3477.
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Fittings shall be Class 250 cast iron conforming to AWWA C100 and C111 and shall be
bituminous coated inside and out. Flanges, where called out, shall comply with ANSI
B16.1, Class 125. Flange gaskets shall be full face.
Mechanical joint fittings may be ductile iron Class 350 compact fittings manufactured in
conformance with ANSI/AWWA C153/A21.53-84.
15-2.4 MISCELLANEOUS FITTINGS
15-2.4(1) DRESSER -TYPE FLEXIBLE COUPLINGS
Flexible couplings shall be dresser -type unless specifically noted otherwise on the Plans,
as follows:
Steel -to -Steel: Rockwell Type 411, Dresser Style 38, or equal. Sleeves shall have a
fusion -bonded epoxy coating.
Steel -to -Cast -Iron: Rockwell Type 433, Dresser Style 62, Romac Style 501 or equal.
Cast -Iron -to -Cast -Iron: Rockwell Type 431, Dresser Style 38, or equal. Sleeves
shall have a fusion -bonded epoxy coating.
15-2.4(2) CALDER -TYPE FLEXIBLE COUPLINGS
Flexible couplings shall be Calder -type where specifically indicated on the Plans.
Calder -type flexible couplings shall consist of all elastomeric PVC sleeve secured to the
pipes with stainless steel clamping bands. Adapter couplings shall be furnished for
transitions between piping of different outside diameters as necessary.
Calder -type flexible couplings shall be as manufactured by Calder Co., Femco, or
approved equal.
15-2.4(3) FLANGED ADAPTER COUPLINGS
Flanged coupling adapters shall be Rockwell type 912, Dresser Style 127, or equal.
Flanged coupling adapters shall be equipped with anchor studs set in pipe unless
specifically indicated otherwise.
15-2.5 MANUAL VALVE OPERATORS
All buried valves shall be provided with 2 -inch square operating nuts.
All plug valves shall be wrench -operated, except buried plug valves, which shall be
enclosed worm and gear operated.
All manually -operated valves shall open to the left. Unless otherwise directed, all valves
shall be set with the stems vertical. All packing glands shall be properly packed and
adjusted.
15-2.6 VALVE BOXES
All below -grade valves shall be furnished with two-piece, adjustable cast iron valve
boxes with a minimum inside diameter of five inches. The valve boxes shall be set
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concentric with the axis of the stem and adjusted to the finish grade. Valve box lids shall
be identified with a letter/number code and opening direction designation as shown on the
Plans.
15-2.7 VALVES
15-2.7(1) GATE VALVES
Gate valves shall be left -opening, iron -body, resilient seat, non -rising high-strength
bronze stem with 0 -ring seal, and shall meet the requirements of AWWA Standard C509.
Resilient seat valves shall be Mueller, Clow or approved equal complying with AWWA
C 509.
15-2.7(2) CHECK VAl VES
Check valves for lift station service shall be swing check, outside lever and spring, iron
body, stainless steel shaft, bronze mounted with bronze and stainless steel fittings, 125
pound service, Rennselar List 340, Mueller A2600 or equal.
15-2.7(3) PLUG VALVES
Plug valves shall be non -lubricated eccentric plug type, 175 -pound semi -steel, DeZurick
Series 100 with. RS 16 plug for sizes 6 inch and smaller and RS 17 plug for sizes 8 inch
and larger.
15-3
15-3.1 GENERAL
Pipe and accessories shall. be handled in such a manner as to insure delivery on the site in
a sound and undamaged condition. Particular care shall be taken not to injure pipe
coatings. No other pipe or material of any kind shall be placed inside of lined pipe or
fittings after the lining has been applied. All pipe, fittings shall be unloaded, stored, and
handled in such a manner as to insure against damage. Dropping of pipe or fittings will
be cause for rejection.
The types and sizes of pipes to be used shall be as specified herein and as shown on the
Plans.
All pipe shall lbe carefully placed and supported at proper lines and grades, and where
possible shall be sloped to permit complete drainage. Piping runs shown on the Plans
shall be followed as closely as possible, except for minor adjustments to avoid conflict.
Unions shall be installed in all threaded joint piping to facilitate the removal of sections
for maintenance and repair in accordance with best trade practice.
The interior of all piping shall be cleaned after assembly and before connecting to
equipment.
Whenever pipe requires field -cutting to fit in line, work shall be done by a machine in a
satisfactory manner, so as to leave a smooth end at right angles to the axis of the pipe.
J•SPECS\93072
15-3
1/12/96
Bell -and -spigot piping shall be laid with bells upgrade. Sections of pipe so laid shall fit
together so that when complete the pipe shall have a smooth and uniform invert.
All pipe shall be installed in strict accordance with the manufacturer's recommendations
and/or specifications, and in accordance with best commercial trade practice. Any special
tools required for laying, jointing, cutting etc., shall be supplied and properly used. All
pipe shall be thoroughly cleaned before laying, chall be kept clean until acceptance, and
shall conform accurately to the lines and grades given.
At all times during pipe laying operations trenches shall be kept free of water either by
pumping, bailing, or drainage. The ends of piping shall be sealed with a tight -fitting plug
when the pipe is not being laid.
Thrust blocks shall be provided for all water and force main piping and other piping
specified for pressure testing except threaded, welded, or flanged piping. Thrust block
sizes shall be as shown on the Plans and shall be so placed as to allow future maintenance
at fittings without breaking out thrust blocks. In general, forms or reinforcing will not be
required for thrust blocks. Thrust block concrete shall bear directly against undisturbed
earth, and shall be poured and cured before pipe is subjected to any hydrostatic pressure.
Valves shall have interiors cleaned of all foreign matter and inspected both in open and
closed positions prior to installation. Valves and valve boxes shall be set plumb and
centered, and shall be placed to prevent transmittal of shock or load to valves.
Allipes runningthrough concrete walls below water surface or where subject to
groundwater pressre shall be assembled as shown on the plans. Pipes running through
concrete not subject to water pressure may be installed through standard steel sleeves, one
or two pipe sizes larger than the pipe. The pipe shall be free of all dirt and grease, and
shall be thoroughly cleaned to insure a tight bond with the concrete.
15-3.2 GRAVITY SEWER PIPING
Gravity sewer piping shall be installed in accordance with Section 7-17 of the
WSDOT/APWA Standard Specifications.
15-3.3 FORCE MAIN
Force main piping shall be installed in accordance with applicable portions of Section 7-
11 of the WSDOT/APWA Standard Specifications.
15-3 4 FLANGED PIPING
Flanged joints shall be made in accordance with best trade practice. Screwed flanges for
piping shall be run until pipe projects beyond face and no more than one thread is
exposed on the back side. All flange faces shall then be machined so as to be perfectly
parallel. All flanged pipe shall be accurately dimensioned; no "drawing -up' will be
allowed. Gaskets shall be full face rubber.
15-3.5 MECHANICAL JOINT PIPING
Mechanical joint piping shall be installed in best trade practice, with torque wrenches
used to avoid overstressing bolts.
J.SPECS\93072
15-4
1/12/96
Piping shall be installed using recommended procedures outlines in "Handbook of Cast
Iron Pipe" as published by the Cast Iron Pipe Research Association, which in part
requires that all contact surfaces between the rubber seal and the pipe shall be wire -
brushed, and the spigot be centrally located in the bell.
When tightening bolts, it is essential that the gland be brought up toward the pipe flange
evenly, maintaining approximately the same distance between the gland and the face of
the flange at all points.
15-3.6 FLEXIBLE COUPLINGS
Flexible couplings shall be installed in accordance with recommendations of
manufacturer and used where indicated on the Plans. Finished joints shall be watertight.
under the specified test pressure of the pipe. Buried flexible couplings shall be coated.
with asphalt -base paint after assembly.
15-3.7 PIPE BEDDING
All pipe shall be bedded in compacted select backfill bedding material accordance with
the WSDOT/APWA Standard Specifications.
15-3.7 TESTING
All piping systems will be tested to demonstrate leak -tightness prior to acceptance.
Eacharticular piping system shall be thoroughly flushed and tested as hereinafter
specified. All pressure testing shall be done prior to any finish painting. Pressure testing
shall be conducted at a test pressure of 50 psi over the design operating pressure or at 100
psi whichever is greater.
Pipes and appurtenances shall be backfilled sufficiently to prevent movement under
pressure. All thrust blocks shall be in place at least 7 days to allow the concrete to cure
before testing. Where permanent blocking is not required, temporary blocking shall be
provided and removed after testing.
J:SPECS\93072
15-5
1/12196
DIVISION 16 ELECTRICAL
16-1 GENERAL
16-1.1 SCOPE
This section of the specification covers the electrical materials, equipment and installation
methods necessary for the lift station, including but not limited to:
Service to the lift station control panel from the servicing utility.
Purchase, from the City of Yakima, of a standard lift station control panel complete with
Utility (Pacific Power) service entrance and metering, SUSE main breaker, transfer
switch (approved by Pacific Power), pump starters and controls, level controllers, branch
circuit panelboard, telemetry equipment, radio transmitter/receiver and antenna and
support equipment. In order to maintain compatibility with the existing City of Yakima,
Wastewater Treatment Division telemetry and control system, only lift station control
panels purchased from the City shall be provided.
Connection of the motors and floats provided as part of the project.
Grounding of the electrical service.
Testing requirements for all electrical equipment, instrumentation equipment, and its
associated mechanical attachments.
Requirements for marking and identification of circuits, equipment, enclosures with wire
numbers, nameplates and warning signs.
16-1.2 REFERENCE SPECIFICATIONS
Electrical work shall be in accordance with the National Electric Code (latest edition) and local
and state codes in legal force in the project area.
16-1.3 DRAWINGS
Provide plan and section/elevation drawings showing the following items
• Utility service pole
• Lift station control panel
• Lift station pumps and level sensors
• Grounding
• Underground electrical circuit
Modify standard plan drawings to suit each specific location and equipment served.
Provide a one line diagram showing wire, conduit, and load/device information.
Provide detail drawings showing:
• Service arrangement
• Control panel installation
• Pump motor/level sensor installation
1:SPECS193072
16-1
1/12/96
16-1.4 TESTS AND INSPECTION
All contract docurnents (Plans and Specifications) shall include the requirement to submit work
to all tests and inspections required by the City Engineering Division and any electrical inspector
having jurisdiction. Certificates of approval that are issued shall be turned over to the City.
Requirements relating to tests and inspections shall include at a minimum:
Cooperation with any electrical inspector having jurisdiction to provide assistance at reasonable
times for the inspection of the electrical work performed as part of the project.
Testing wire and cable installation when complete, and 72 hours prior to energization of the
system. Check for continuity, visual damage, marking, and proper phase sequence before
performing insulation testing. Insulation testing shall consist of a megohmeter test for all
insulated wire and cable. Ambient temperature and humidity during test shall be recorded.
Megger main bus with feeder and branch circuit devices connected with all conduit and
grounding connections complete. Use a 1,000 volt DC megger„ Record all readings for a period
of three minutes or until they are stabilized. Verify with manufacturer that the equipment can be
meggered in this manner before test. Make megger checks line -to -line and lure -to -ground for all
phases.
Test the resistance of the grounding electrodes.
Report all test results in writing. Where tests disclose problem areas, retest after the defect has
been corrected.
Demonstration that the electrical installation is working by operating all electrical systems and
equipment. Simulate control and emergency conditions, artificially where necessary, for
complete system tests.
16-2 MATERIALS
16-2.1 GENERAL
Only new materials and equipment shall be provided which are standard products of
manufacturers regularly engaged in the production of such equipment. Material and equipment
shall be approved and labeled for the purpose for which they are to be used by a nationally
recognized electrical testing laboratory. Similar items of equipment shall be of the same
manufacturer and type. The equipment and materials shall meet applicable NEMA, IEEE, and
ANSI standards.
Materials, devices, equipment, or supplies of materials shall be inherently non -corrosive or
coated or covered in a manner which renders them non -corrosive. Material shall not be installed
in a manner, location, or construction that produces galvanic action or any other materials
corroding or eroding action.
Equipment or devices fabricated in the field shall be equal in every respect to manufactured items
used for the same purpose. Where cutting, drilling, grinding, etc., is done to galvanized or
painted metal, it shall be regalvanized or painted to match original finish.
J:SPECS\93072
16-2
1/12/96
The wetwell area of the lift station is considered to be a "hazardous" location for the purposes of
this Specification.
16-2.2 RACEWAYS
Raceways shall be provided per 9-29.1 Conduit of the WSDOT/APWA Standard Specifications.
Raceways shall be galvanized rigid steel conduit. Rigid steel conduit shall be hot -dipped
galvanized or sherardized steel conduit meeting ANSI C80.1. Couplings shall be unsplit, NPT
threaded steel cylinders with galvanizing equal to conduit. Threadless couplings are not
permitted. Nipples shall be factory made through 8 -inch length. Running threads are not
permitted. Intermediate steel conduit is not permitted.
Provide liquid -tight flexible metal conduit at flexible connections. It shall be flexible galvanized
steel convolutions covered by a liquid tight PVC layer with manufacturer's marking at 3 -foot or
less intervals. Connectors shall be UL approved for grounding and employ a ferrule which
covers the end of the conduit inside and out. Conduit shall be Electri-Flex Type LA or American
Sealtite, Type UA.
Where plastic conduit is permitted to be used under these specifications, it shall be Schedule 40
PVC r�,gid conduit suitable for underground installation without concrete encasement, suitable
for 90 C conductors, and meeting NEMA TC -2 standards for plastic conduit, Carlon, Johns -
Manville, or equal.
16-2.3 CONDUCTORS
Conductors shall be provided per 9-29.3 Conductors, Cable of the WSDOT/APWA Standard
Specifications.
Insulated conductors shall be UL listed for the type called out.
Power wiring for service, feeder, and motor circuits shall be Class B stranded copper conductor
with Type RHH-RHW-USE insulation. Minimum conductor size for all power wiring shall be
No. 12 AWG.
Control wiring shall be Class C stranded copper conductor with Type MTW insulation.
Minimum conductor size shall be No. 14 AWG.
Motor connectors shall be insulated, solid -barrel, crimp type, ring tongue plated copper alloy
terminals bolted together and taped to insulation thickness of conductors.
Connectors for terminating copper conductors shall be as follows:
1. No. 18 through No. 10 AWG - insulated, solid -barrel, crimp type, spade tongue terminal
2. No. 8 and larger size - compression, solid -barrel, one or two hole lugs installed by high-
pressure compression tools.
Grounding material shall be as follows:
1. Grounding clamps shall be equal to T&B 3900 UB Series.
J:SPECS\93072
16-3
1/12/96
2. Grounding wire and cable shall be solid copper for No. 4 and smaller diameter; stranded
copper in the larger sizes.
3. Ground rods shall be copper -clad steel, 3/4 inch round, 10 -feet long.
16-2.4 FITTINGS AND BOXES
Fittings and boxes shall be as follows:
1. Outlet and junction boxes shall be galvanized, cast iron alloy, one piece, threaded hub similar
to FS, FD, or GRF boxes with neoprene gaskets and galvanized, cast iron alloy covers.
2. Fittings shall be galvanized, cast iron alloy with threaded hubs, neoprene gasket and
galvanized cast iron alloy cover. Miscellaneous fittings shall be as follows:
a) Clamp backs shall be galvanized cast iron alloy, one -hole style.
b) Locknuts shall be extra -heavy, hot -dip galvanized steel through 2 inches trade size and
hot -dip galvanized malleable iron above that size.
c) Bushing shall be hot -dip galvanized iron with insulating thermosetting collar. Provide
grounding connector on bushing where terminating at enclosures.
3. Fittings for use with rigid non-metallic conduit shall be PVC and have solvent weld -type
conduit connections. If such are not available, then the specifications for rigid steel fittings
shall apply.
Seals shall be provided for raceways entering the wetwell and "Hazardous" areas as defined by
applicable code. Sealing compound shall be "Chico X" with appropriate fiber backer.
Use cord grip bushing and stainless steel Keliem's grip devices for hanging cords.
Materials installed in a "hazardous" area shall meet Class I, Group C and D, Division 1
requirements to comply with ANSI Cl National Electric Code.
16-2.5 FLOAT SWITCHES
Float switches shall be of the tilting mercury tube type. The mercury tube shall be enclosed in a
liquid tight plastic casing. It shall be suspended at the proper position to hang or float, depending
on the liquid level. It shall have single pole double throw contacts. Float switch shall be Flygt
Model ENP -10, or equal.
16-2.6 PULLBOXES
Junction boxes (pullboxes) for underground circuits shall be in accordance with the Washington
Sate Department of Transportation's Standard Plan No. J-1 la, Type 1, or Type 2.
J:SPECS\93072
16-4
1/12/96
16-3 INSTALLATION
16-3,1 GENERAL
The equipment and materials shall be installed in a neat and workmanlike manner employing
workmen skilled in the particular trade and in accordance with the manufacturer's instructions
and industry standards. The work shall be performed in compliance with Article 8-20.3
Construction Requirements of the WSDOT/APWA Standard Specifications.
Enclosed electrical equipment such as control stations, etc. shall be protected during construction
from moisture, dust, abrasion, or other damage or disfigurement.
16-3.2 EQUIPMENT
Installation of manufactured equipment shall be in accordance with manufacturer's and NEMA
standard installation instructions. Tests shall be performed as described in these standards and as
recommended by the equipment manufacturer.
Install self-supporting equipment in a level and plumb manner, shimming with full width
stainless steel shims, as necessary. Bolt units to the pad with 3/8" stainless steel j -bolts or
expansion anchors and bolts or the panel manufacturer's recommended fasteners. Pad shall be
level within plus or minus 1/8 inch in a square yard before installing equipment. Grout or caulk
enclosure to pad. Set enclosure and/or supports in bitumastic bed at least 1/8" thick. Conduits
entering from above or at the sides shall be bushed. Conduits entering from below shall have
grounded insulating bushings bonded to the ground bus or pad.
Wall or pedestal -mounted enclosures such as those for enclosed switches, starters, circuit
breakers, etc. shall be mounted level and plumb. Fasten enclosures with a minimum of three
screws or bolts. Switches, starters, etc. shall be mounted 4'-6" to centerline of handle on walls or
3'-6" when pedestal or stanchion supported at motors or equipment. In wet locations, provide
neoprene or polyethylene 1/2 inch spacers behind equipment enclosures and connect all raceways
to enclosure from below.
Provide pedestals or stanchions for devices or equipment not wall mounted or self supporting.
Pedestals or stanchions shall be constructed of structural steel hot -dipped galvanized after
fabrication or of structural stainless steel. "Strut" systems and aluminum structural shapes are
not permitted.
Enclosures, including motor starters, safety switches, and control stations shall be provided with
permanently attached identification plates. The plates shall be laminated phenolic with 3/8 inch
high engraved white letters with black background.
Equipment shall be vacuumed clean after installation; metal cuttings shall be removed with a
magnet or suitable means before assembling equipment; insulating supports, bushings, etc., shall
be wiped with a clean lint -free cloth; clean debris, shavings, etc. from breakers, bus, switches,
relays, etc. before start-up.
The following shall be done as a minimum before energizing equipment:
Remove bracing, packing materials, tape on movable parts, etc. as necessary. Check for
damage to enclosure, cracked porcelain, chipped bushings, etc.
J:SPECS\93072
16-5
1/12/96
Tighten all structural connections, barriers, racking mechanisms, etc.; check alignment of
plug-in devices with stationary parts; check operating mechanism for binding,
lubrication, etc.
Check continuity and phase uniformity from unit to unit and for all control or metering
circuits.
16-3.3 RACEWAYS
Rigid steel conduiit shall be used for all work unless shown otherwise on the drawings, except
conduit installed underground may be Schedule 40 PVC.
Bend and offset metal conduit with hickey or power bender, standard elbows, conduit fittings or
pull boxes. Bending of PVC shall be by hot box bender and, for PVC two inches in diameter and
larger, expanding plugs. Apply PVC adhesive by brush. Make elbows, offsets and bends
uniform and symmetrical.
Circuits shall run in individual raceways unless specific combinations in one raceway are shown.
Raceways shall not be ganged into wireways, pull boxes, junction boxes, etc., without specific
approval.
Where raceway exits from grade or concrete, provide rigid steel conduit with 20 mils PVC for a
minimum of 24 inches before exiting.
The trench for underground raceway runs shall be as straight as practicable. Changes in direction
and/or grade shall be of sufficient length to allow a gradual change (three foot radius minimum).
The trench shall be graded true and free from stones or soft spots. Three inches of fine sand shall
be placed in the trench bottom and tamped into place. After the raceway is placed in the trench,
native earth backfill passing a No. 8 sieve, free of stones shall be placed in the trench bottom. and
tamped around the sides of the raceway. The final backfill shall be placed to the finish grade
prior to tamping on top of the conduit.
Each concealed below -grade conduit shall be mandreled with a non-metallic mandrel not more
than 1/4 inch smaller than the inside diameter of the raceway, followed by a wire brush and a
swab. Replace conduit which does not pass the mandrel or if broken pieces of conduit are
removed from the conduit by the mandrel.
Direct buried conduit installed in trenches shall be marked by a one inch thick concrete ribbon or
a strip of yellow marking tape. The marker shall be placed a minimum of twelve inches below
grade during backfilling of the trench. The concrete ribbon shall be painted with a yellow strip
six inches wide.
Raceway shall be installed as a complete, continuous system without wires, mechanically secure
and electrically connected to metal boxes, fittings, and equipment. Unused openings shall be
blanked off using factory -made knockout seals. Conduits shall be kept clean and dry until
conductors are installed using caps, bushing + "penny", or other suitable means.
Conduit couplings, fittings, and boxes where threaded male to female connections are made shall
be waterproofed and rustproofed by application of a watertight, conductive thread compound.
J:SPECS\93072
16-6
1112/96
16-2.4 CONDUCTORS
Insulated wire and cable shall be installed in raceway systems after the system is complete
without damage due to missing bushings, burrs on conduit ends, etc. Cable lubricants, pulling
sleeves, pullboxes, etc. shall be used to keep pulling tensions within allowable limits. Pulling
compounds shall be Ideal Yellow 77 or equal. Pulls shall be by hand using cable grips or
wrapping extra conductor around to form an eye. Cable ends shall be cut off after pulling and all
compound cleaned from conductors before terminating.
Service and motor branch circuits shall be continuous without splices from equipment terminal to
equipment terminal or motor lead. Instrumentation and control circuits shall be continuous
except for termination on terminal strips in control panels. Branch circuits may be spliced at
taps.
Color code for conductors shall be as follows:
Basic color coding:
480Y/277 240/120
Phase volts volts
A Brown Black
B Orange Orange
C Yellow Red
Neutral Gray White
Ground Green Green
For 3 -wire, 120/240 volt single phase circuits, use black and red with white neutral.
Circuit conductors of the same color shall be connected to the same phase throughout the
installation.
White or green color shall not be used for any conductor not intended for neutral or grounding
purposes. This limitation applies to power, lighting, and control wiring, except smaller gauge
(No. 18 or less), low voltage control circuits.
Wire with the insulation of required color shall be used for conductors No. 8 AWG or smaller.
For wire larger than No. 8 AWG and other types of wire of any size, which may not be available
in specified colors, self-adhesive, wrap-around cloth type markers of solid colors to color code
the conductors shall be used.
Where wire markers are used for color coding, each conductor shall be marked at all accessible
locations such as panelboards, junction boxes, pullboxes, auxiliary gutters, outlets, switches, and
control centers.
Viewing equipment from the front, connections shall be made so phase color sequence is in the
same order.
Control wiring must be of colors different from power wiring or be supplied with a trace of color
in addition to the basic color of the insulation. In general, the same color shall be used
throughout a given system for any signal or control wires performing the same function.
Wire shall be installed neatly in all enclosures.
J:SPECS\93072
16-7
1/12/96
Service circuits shall be terminated with compression indent barrel connectors with one or two
hole spade lug ends. Control wiring shall be terminated with indent, insulated spade connectors
made especially for the wire size and terminal size on which they are installed and crimped with
an approved pliers or tool for the connector.
J:SPECS\93072
16-8
1/12/96
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SCALE r • 1 - 0•
CAP
1 I j I 141
ANTENNA CABLE
TO ANTENNA
ANTENNA CONNECT ION
ANTENNA CABLE
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NOTES:
I GROUND ANTENNA CABLE TO NAST WITH SPECIFIED
COAX CABLE GROUNDING KIT BOND NAST TO
GROUNDING ELECTRODE WITH 1O8 AUG COPPER
GROUNDING CONDUCTOR.
ENO OF PANEL ELEVATION
LIFT STATION CONTROL PANEL
SCALE t• • 1' - 0'
CITY OF YAKIMA
LIFT STATION
DESIGN STANDARDS
LIFT STATION CONTROL PANEL
AND ANTENNA DETAILS
P.. -UTILITY POLE. DIP
Am RISER FOR FEEDER
CONDUIT
CONCRETE
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SCALE 1/1,1 -0'
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COMMIT EXPLOSION
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PROVIDE 4- OF EXTRA
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• -. CHAIN OR CABLE WITH
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•
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MOUNTING DETAIL
FLOAT ANO LEVEL SENSOR CONNECTION
SCALE 4CHE
CITY OF YAKIMA
LIFT STATION
DESIGN STANDARDS
LIFT STATION
ELECTRICAL PLANS AND SECTION
CONCRETE COLLAR
LUTE. MJ
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CITY OF YAKIMA
LIFT STATION
DESIGN STANDARDS
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TYPNON-SSA
ROUT
GRWTNN
- lYP
BOLT -00 MOST
SOCKET
'AUTO CLEAN'
RUEH VALVE
(DHE PUMP MIN.)
CITY OF YAKIMA
UFT STATION
vcaiaJN 1 ANvnnvv
TYPICAL UFT STATION PLAN
AND ABBREVIATIONS