2005-5-2 SEH Transmittal . �
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S EH TRANSMITTAL
To: Larry Kruse Date: May 2, 2005
City Administrator
City of Albertville SEH File No.: A-ALBEVO501.00
P.O. Box 9 Client No.:
I Albertville, MN 55301
Re: Albertville,Minnesota
We are:
❑ Enclosing ❑ Sending under separate cover � Sending as requested
One copy of the utility specifications used for the Prairie Run project.
The specs are for sanitary forcemains, valve vaults, water distribution systems, storm sewer systems,
sanitary sewer systems, and sewer pump stations.
These can be considered as an SEH standard for the City of Albertville.
For your:
� Information/Records ❑ Review and comment ❑ Approval
❑ Action ❑ Distribution ❑ Revision and resubmittal
Remarks:
Please call me at 651.490.2147 if you have questions.
By: ��erg '
c: '
docmuen2 1/04
Short Elliott Hendrickson Inc.,3535 Vadnais Center Drive,St. Paul, MN 551 1 0-51 96
SEH is an equal opportunity employer � www.sehinacom � 651.490.2000 � 800.325.2055 � 651.490.2150 fax
.
SECTION 02538
SEWAGE FORCEMAINS
PART 1 GENERAL 2. C111: Standard for Rubber - Gasket
Joints for Ductile Iron Pressure Pipe and
lAl SUMMARY Fittings.
3. C150: Standard for the Thiclrness
A. Provide sewage forcemain. Design of Ductile-Iron Pipe.
4. C151: Standard for Ductile Iron Pipe,
B. Related Sections: Centrifugally Cast.
L Section 02221 - Trench Excavation and 5. C153: Standard for Ductile Iron
Backfill Compact Fittings.
2. Section 02730-Sanitary Sewer Systems 6. C900: Standard for Polyvinyl Chloride
(PVC) Pressure Pipe.
C. Method of Measurement:
1. Measure by length in feet of each 1.03 DELIVERY OF MATERIALS
diameter along pipe centerline.
2. Measure from point of connection at lift A. Inspect all pipe and materials during the
station to center of discharge manhole. unloading process.
3. No deduction for fittings.
B. Notify Engineer of any cracked, flawed, or
D. Basis of Payment: ' otherwise defective material.
1. Payment for acceptable quantities of
forcemains shall be at the Contract Unit C. Remove all materials found to be
Price as listed on the Bid Form. All unsatisfactory by Engineer from the Site.
associated Work items shall be
considered incidental.
PART 2 PRODUCTS
1.02 REFERENCES
2.01 PIPE AND FITTINGS
A. ASTM D2241: Specification for PVC
Pressure-Rated Pipe. A. Provide:
B. ANSI: Material Class Joint
1. A21.4: Standard for Cement - Mortar
Lining for Ductile Iron Pipe and Fittings. Polyvinyl Chloride Pipe C-900 Gasket
2. A21.11: Standard for Rubber - Gasket
Joints for Ductile Iron Pressure Pipe and
Fittings. B. Provide all pipe and fittings of each material
3. A21.51: Standard for Ductile Iron Pipe, type from the same manufacturer.
Centrifugally Cast.
4. A21.53: Standard for Ductile Iron
Compact Fittings. PART 3 EXECUTION
C. AWWA: 3A1 PIPE INSTALLATION
1. C 104: Standard for Cement - Mortar
Lining for Ductile Iron Pipe and A. Inspect pipe for defects and cracks while
Fittings. suspended.
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B. Provide corrective measures for any line
B. Remove all dirt and foreign material from exceeding allowable leakage.
pipe interior prior to lowering into trench.
C. Install pipe at a depth to maintain 8 feet of END OF SECTION
cover from final surface elevation. �
D. Install pipe at the elevations and grades I
indicated by Drawings and field stakes.
E. Pipe Foundation and Backfill Procedures:
See Section 02221.
3.02 FITTING INSTALLATION
A. Anchor fittings by means of restrained joint
devices installed according to
manufacturer's recommendations.
3.03 FIELD QUALITY CONTROL
A. Perform the following tests upon completion
of forcemain construction and prior to
connection to lift station.
1. Pressure Test:
a. Subject the entire length of
forcemain to hydrostatic pressure
test of 100 psi for a period of 1 hour.
b. Measure pressure at lowest pipe
elevation.
c. Maintain constant pressure
throughout test period.
d. Provide pumps, gages, connections
and other necessary apparatus.
2. Leakage Test:
a. Measure water volume required to
maintain test pressure.
b. Allowable leakage shall be
detemuned by the formula:
SD.�—
L =
133,200
L= Allowable leakage in
gallons
S = Length of pipe tested in
feet
D = Nominal diameter of pipe,
in inches
P= Test pressure in PSI
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SECTION 02575
VALVE VAULT
PART 1 GENERAL B. ASTM C478 - Specification for Precast
Reinforced Concrete Manhole
1.01 SLTMMARY
C. ASTM D3034 - Specification for PVC
A. Section Includes: Sewer Pipe and Fittings
1. Precast concrete vault
2. Check valve D. ANSI A21.4 - Standard for Cement - Mortar
3. Gate valve Lining for Ductile Iron Pipe and Fittings
4. Casting and rings
5. Discharge pipe and fittings E. ANSI A21.51 - Standard for Ductile Iron
6. Drain pipe Pipe, Centrifugally Cast
B. Related Sections: F. ANSUAWA C509 - AWWA Standard for
1. Section 02221 - Trench Excavation and Resilient-Seated Gate Valves, for Water and
Backf'ill Sewerage Systems '
2. Section 02538 -Sewage Forcemains
3. Section 02732 - Wet Pit Sewage 1.03 SUBMITTALS
Pumping Station
A. Certificates: Submit Certificate of '
C. Method of Measurement: Compliance as required under Article 1.04. '�
1. Measure as a complete unit. I
2. Unit includes: B. Shop Drawings: Submit Shop Drawings for
a. Precast concrete valve, cover, base, the precast vault components.
and appurtenances.
b. Casting cover, frame, and adjusting 1.04 QUALITY ASSIJRANCE
rings.
c. Check valve. A. Provide certificates from the manufacturer
d. Gate valve. certifying that the following materials meet
e. Pipe support. the respective requirements listed under
f. Discharge pipe and fittings within Article 1.02.
the limits shown on Drawings. 1. Precast concrete vault
g. Drain pipe. 2. Ductile iron pipe and fittings
h. Pipe connections 3. Check valves
4. Gate valves
D. Basis of Payment:
1. Payment for the Valve Vault shall be
incidental to the Lump Sum Contract PART 2 PRODUCTS
Price for the Lift Station as listed on the
Bid Form. All associated Work items 2.01 PIPE AND FITTINGS
will be considered incidental.
A. Provide as follows:
1.02 REFERENCES
Material Class Joint
A. ASTM A48 - Specification for Gray Iron DIP 50 See Drawings
Castings
2004 Prairie Run Valve Vault
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B. Provide all pipe and fittings of each material 2.04 PIPE SUPPORT
type from the same manufacturer.
A. Adjustable.
2.02 VAULT B. Fee and Mason Figure 291, or equal.
A. Precast Concrete Sections:
1. ASTM C478. PART 3 EXECUTION
2. Dimensions: See Drawings.
3. Joints: Gasketed. 3.01 INSTALLATION
4. Pipe Connections: Use tapered hole
locators and positive sealing expandable A. Construct vault in accordance with Drawing
rubber boots. details and elevations.
B. Casting: B. Provide trench excavation, foundation, and
1. ASTM A48. backfill in accordance with Section 02221.
2. Type: See Drawings for type.
C. Manhole Steps: � C. Place precast base slab on compacted
1. Width: 12 inches. granular subgrade.
2. Cast aluminum by Modern Metals
Foundry (A-12). D. Set bottom precast barrel section in a full
3. Polypropylene coated steel by M.A. mortar bed on the base slab.
Industries, Inc.
E. Locate steps within 1 inch of vertical
D. Mortar: alignment and within 1 inch of required
1. 1 part portland cement, 3 parts mortar vertical spacing. '
sand.
2. Sufficient water for property F. Fill joints between banel sections and
consistency. around pipe connections with mortar or
3. Entrained air content: 7 to 10 percent. approved joint compound.
2.03 VALVES G. Provide adjusting rings in accordance with
Drawing details to establish casting
A. Gate Valve: elevation.
1. ANSUAWWA C515 -resilient-seated.
2. Ends: Flanged. H. Adjust casting to final surface elevation.
3. Operating stem: Non-rising with "O"
ring seals. 3.02 CLEANING
4. Operator: Hand wheel.
A. Remove dirt and foreign materials from the
B. Check Valve: completed structure.
l. Swing check with rubber flapper
2. Body and cover: cast iron
3. Design: long pattern with integrally cast END OF SECTION
flanges
4. Flapper: Buna-N with "O" ring seating
edge and internal steel reinforcement
5. Golden Anderson figure 250-D with
cleanout access.
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SECTION 02660
WATER DISTRIBUTION SYSTEMS
PART 1 GENERAL b. Unit includes installation of hydrant,
base, blocking and crushed rock.
1.01 SLTMMARY 5. Corporation Stops
a. Measure corporation stops of each
A. Section Includes: size and type as a unit.
l. Furnish and install all material, labor, 6. Curb Stops and Boxes
tools, and equipment to construct a. Measure curb stops and boxes of
complete in place the following:: each size and type as a unit.
a. Water Main Pipe and Fittings 7. Service Pipe
b. Valves and Boxes a. Measure by distance in linear feet.
c. Hydrants b. Measure each size separately.
d. Services c. Measure from center of water main
e. Insulation to center of curb stop plus 1 foot for
slack.
B. Related Sections: 8. Insulation
1. Section 01300- Submittals a. Measure by area in square yards.
C. Method of Measurement D. Basis of Payment
1. Water Main 1. Payment for acceptable quantities of
a. Measure by distance in linear feet. water main and appurtenances shall be
b. Measure along pipe axis with no at the contract unit price as listed on the
deduction for fittings or valves. Bid Form. All associated work items
c. Measure in the horizontal plane shall be considered incidental.
unless pipe grade exceeds 15
percent. 1.02 REFERENCES
2. Fittings
a. Measure by weight in pounds. A. ANSUAWWA C150/A21.50 - American
b. Basis of Weight: National Standard for the Thickness Design
1) Fittings 3-inch - 16-inch: of Ductile Iron Pipe.
ANSUAWWI C153/A21.53-88,
according to Schedule of B. ANSUAWWA C151/A21.51 - American
Weights in Appendix. National Standard for Ductile - Iron Pipe,
2) Fittings 18-inch - 48-inch: Centrifugally Cast in Metal Molds or Sand-
ANSUAWWA C110/A21.10- Lined Molds for VJater or other Liquids.
87.
3) Weight measurement will not C. ANSUAWWA C153/A21.53 - American
include glands, gaskets, rods, National Standard for Ductile - Iron
bolts, or other accessories. Compact Fittings, 3-inch through 16-inch,
3. Valves and Boxes for Water and Other Liquids.
a. Measure valve and box of each size
and type as a unit. D. ANSUAWWA G502 - AWWA Standard
4. Hydrants for Dry-Barrel Fire Hydrants.
a. Measure hydrants of each size and
type as a unit.
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A-ALBEV 0409 02660 - 1
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E. ANSUAWWA C504 AWWA Standard for 1.06 STAKING
Rubber-Seated Butterfly Valves.
A. The Engineer shall provide necessary
F. ANSUAWWA C515 - AWWA Standard for staking for all Work under this contract. The
Resilient - Seated Gate Valves, for Water Contractor shall give the Engineer 48 hours
and Sewerage Systems. prior notice when survey stakes are needed.
Construction stakes will be provided as
G. ANSUAWWA Standard for Installation of follows
Ductile Iron Water Mains and their l. Water main and sanitary sewer offset
Appurtenances. stakes (one set), 50-foot intervals - once.
H. ANSUAWWA C-900 - AWWA Standard
for Polyvinyl Chloride Pipe. PART 2 PRODUCTS
1.03 SUBMITTALS 2.01 POLYVINYL CHLORIDE PIPE (PVC) -
C900
A. Submit for acceptance, complete Shop
Drawings and details for all couplings, A. Polyvinyl chloride pipe shall conform to
valves, operators, and other special AWWA C-900 (DR).
appurtenances. Include all manufacturers'
product data, dimensions, sizes, types, B. Joints shall be elastomeric gasket joints
maximum loadings, and thrust anchorages. confarming to ASTM D3139. Said gasket
joints must be accepted by the Engineer on
B. Submit proposed method of joint the basis of data furnished by the
conductivity. manufacturer.
1.04 QUALITY ASSURANCE C. No compensation will be given for bends,
caps, plugs, reducers, and sleeves used on
A. Work shall be done in accordance with main or service installation. �
applicable state and local codes, rules and '
ordinances. 2.02 DUCTILE IRON PIPE AND FITTINGS
1.05 DELIVERY,STORAGE AND A. Where specified, the pipe furnished shall be
HANDLING of the ductile iron type, as specified for each
particular use or installation, and shall be
A. Inspection Class 52 unless otherwise noted on the
1. Inspect all pipe and products during the Drawings. Ductile iron pipe shall conform to
unloading process. the requirements of AWWA C151/ANSI A-
2. Notify Engineer of any cracked, flawed 21.51 (Ductile Iron Pipe Centrifugally Cast
or otherwise defective products. in Metal Molds or Sand-Lined Molds).
3. Remove all products found to be
defective by the Engineer from the site. B. Fittings shall conform to the requirements of
ANSI A21.10, A21.11 and A21.4 or ductile
B. Handling and Storage iron compact fittings mechanical joint
L Handling and storage of products shall conforming to ANSI A21.53, A21.11 and
be in accordance with Section 22 of A21.4.
ANSUAWWA C600.
C. DI pipe and fittings shall be furnished with
cement mortar lining, meeting the
requirements of AWWA C104/ANSI A21.4
for standard thickness lining. All exterior
Water Distribution Systems 2004 Prairie Run
02660 - 2 A-ALBEV 0409
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surfaces of the pipe and fittings shall have a 6. The operating nut shall be No. 5, left
tar or bituminous seal coating at least 1 mil opening.
thick. Spotty or thin seal coating, or poor 7. Hydrant flags shall be included with all
coating adhesion, shall be cause for hydrants. Hydrant flags shall be "Hydra
rejection. Finder", "Nordic Flexi Flag", "Flex
Stake" with a polyurethane hinge, or an
D. Conductivity may be achieved by accepted equal. The length of the flag
conductive gaskets, with accepted copper shall be 5 feet. The cost of material and
inserts equal to American Fastite or copper labor necessary to install the hydrant
straps, welded to the pipe and connected flags shall be incidental to the hydrant
with a silicone bronze bolt. Conductors shall bid item.
be rated at 600 amps sustained cunent. 8. Detailed Drawings, catalog information,
and maintenance data shall be furnished
2.03 FIRE HI'DRANTS as requested by Engineer.
9. Hydrant drain ports shall come equipped
A. Fire hydrants shall be Waterous Model with removable threaded plugs. Where
Pacer WB-67 with a 16-inch traffic flange, hydrants are determined by the Engineer
and shall conform to the applicable to be in the water table, the plugs shall
requirements of AWWA G502. be left in. In this case, a bronze plate
stating "No Drain-Pump After Use"
B. Unless otherwise specified in the Contract shall be attached to a hex-head bolt on
Documents, hydrants shall be. furnished in the hydrant nozzle.
conformance with the following 10. Hydrants operating at depths of over 10
supplementary requirements: feet or pressures in excess of 75 PSI
1. Hydrants shall have a 5-inch (nominal shall have heavy-duty operating shafts,
diameter) main valve opening of the as recommended by the manufacturer.
type that opens against water pressure. 11. All hydrants shall be repainted by hand
2. Hydrant barrels shall be two-piece, non- brush with Owner approved paint.
jacket type, with flanged joint above 12. After installation, all hydrants shall be
finished grade line and with mechanical repainted by hand brush with Owner
joint connection at the hub end for accepted paint.
joining a six-inch cast iron branch pipe.
3. Hydrant bury length, measured from the 2.04 BURIED VALVES
bottom of the branch pipe connection to
the finished ground line at the hydrant, A. Gate Valves:
shall be 8 feet 6 inches. An aluminum l. All gate valves, 2-inch to 10-inch, shall
plate shall be attached to the nozzle be resilient-seated wedge gate valves.
section to denote bury depth. Mechanical joints shall conform to
4. Hydrants shall have two outlet nozzles AWWA C111/ANSI A21.11-85.
for 2-1/2-inch hose connection and one 2. All gears on gate valves shall be cut
outlet nozzle for 4-1/2-inch streamer tooth steel gears, housed in heavy cast
connection. All outlet nozzle threads iron extended type grease cases of
shall be Standard Fire-Hose Coupling accepted design.
Screw Threads ANSI B-26. Caps shall 3. Manufacturer shall furnish an affidavit
be nut-type with chain. stating that the valve and all materials
5. Hydrant operating mechanisms shall be conform to the applicable requirements
provided with "O" ring seals, preventing and all tests specified under the
entrance of moisture, and shall be respective standard have been �
lubricated through an opening in the performed and requirements have been ,
operating nut or bonnet. met. I
2004 Prairie Run Water Distribution Systems �I
A-ALBEV 0409 02660 - 3 '
4. Resilient Wedge Gate Valves: 2.05 BUTTERFLY VALVE
a. Resilient wedge gate valve shall
conform to ANSUA�VWAC515. A. All butterfly valves shall be of the tight
Valve shall be resilient wedge gate closing, resilient seat type with rubber seats,
valves as manufactured by Clow which are bonded to the valve body. No
Corporation, or equal. metal-to-metal sealing surfaces are
b. Valves shall be non-rising stem with permitted. Valves shall be bubble tight at
a 2-inch square operating nut. 150 psi rated pressures with flow in either
c. The wedge shall be cast iron, direction, and shall be satisfactory for
completely encapsulated with applications involving valve operation after
polyurethane rubber (except for long periods of inactivity. Valve discs shall
guide and stem area). The rotate 90° from the full open position to the
polyurethane rubber shall be tight shut position. Valves shall meet the full
permanently bonded to the cast iron requirements of the AWWA Specification
wedge to meet ASTM tests for C504-87, Class 150-B and rated for buried
rubber to metal bond ASTM D-429. service. The manufacturer shall have
d. Stems for non-rising stem manufactured tight-closing AWWA rubber
assemblies shall be cast bronze with seated butterfly valves and buried service
integral collars. The non-rising stem operators for a period of at least five years.
stuffing box shall be the O-ring seal Valves shall be epoxy coated interior per
type with two rings located above AWWA C550.
the thrust collar. The rings shall be
replaceable with the valve fully B. Bodies shall be constructed of cast iron
open at full rated working pressure. ASTM A-126 Class B, and shall have
e. There shall be 2 low torque bearings integrally cast mechanical joint ends.
located above and below the stem
collar. The stem nut shall be C. Discs shall be constructed of ductile iron.
separate from the wedge and shall
be of solid bronze. The waterway D. Shafts shall be stainless steel,type 304.
shall be smooth and free of all
pockets, cavities and depressions in E. Seats shall be a Buna N,full circle 360.
the seat area.
f. Both interior and exterior of the F. Bearings shall be nylon or Teflon.
body and bonnet shall be coated
with fusion bonded epoxy. G. Valve operator shall be traveling nut type
designed to withstand 300 feet pounds of
B. Valve Boxes: input torque at full open or closed positions
1. Valve boxes shall be round base, three without damage to the valve or operator;
piece cast iron, Tyler No. 6860, Type must be fully gasketed and grease packed,
"G", with a No. 6 base or accepted and designed to withstand submersion in
equal, suitable for the depth of cover water to 10 psi; valves shall close with a
required by the Drawings or the General clock-wise rotation of the AWWA nut and
Requirements. shall require a minimum of 30 turns to move
2. Valve boxes shall be 5-1/4-inch from fully open to fully closed.
diameter and shall have sufficient length
to permit not less than a 6-inch 2.06 WATER SERVICES
adjustment above and below grade when
the pipe is laid to the specified depth. A. Water services shall be constructed as
Length adjustment shall be screw type. shown on the detail Drawing. The copper
3. Covers shall have the word "WATER" service pipe shall be Type K, unless
cast on the top. otherwise specified. All field taps for
Water Distribution Systems 2004 Prairie Run
02660 -4 A-ALBEV 0409
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corporation stops shall be made while the 2.09 SERVICE SADDLES
main line is under working pressures. The
Owner's field representative shall view each A. Service saddles shall be Rockwell/Smith
complete building service installation prior Blair, Model 317, or an accepted equal.
to backfilling and while the service pipe is
under working pressure. 2.10 CURB BOXES
B. Copper tubing shall comply with the A. Curb boxes (8 feet long) shall be Mueller H-
following: 10300 or Ford EM-2-80-56M for the 1 inch
size. The box shall be supplied complete
Federal S ecifications WW-T-799 Ty e K with lid and without stationary rods.
ASTM S ecifications B-88-47 Ty e K
AWWA Specifications C-800-55 Type K 2,11 INSULATION BOARD
C. The copper service lines as placed between A. Insulation board shall meet the requirements
the water mains and the curb boxes shall of Mn/DOT 3760. Thiclaiess shall be as
have a minimum of 8 feet of cover; specified on the Drawings.
therefore, service lines must be placed
(incidental to the Project) beneath any B. The insulation board shall be formed by the
obstruction which would prohibit the stated expansion of polystyrene base resin in an
cover if the service line was placed on top of extrusion process, and shall be
the said obstruction. If tunneling or jacking homogeneous and essentially uni-cellular.
of water main building services is required, The surface of the boards shall be extruded,
the method used shall be accepted by the with skins. The material shall conform to the
Engineer. following requirements:
D. All building service locations will be Compressive strength, at 35 psi minimum
established in the field by the Engineer. yield or 5%deflection
Generally, these� locations will agree with Flammability Self extinguishin ���
those indicated on the Drawings; however, �'�'ater absorption after 24
the Contractor shall not install a service until hours immersion,by 0.25%maximum
volume
its location is verified by the Engineer. It I
Thermal Conductivity at
will be the Contractor's responsibility to mean temperature of 75 0.23 maximum
keep an accurate written record of the deg.F.
location of each service and submit this to
the Engineer prior to backf'illing.
PART 3 EXECUTION
2.07 CORPORATION STOPS
3.01 LOCATION OF WORK
A. Corporation stops shall be Mueller B-25000,
Ford FB600, or accepted equal. The size of A. Lines and Grades:
the inlet thread and the size of the copper 1. It may be necessary for the Engineer to
service coupling shall be 1 inch x 1 inch. shift lines a reasonable amount to avoid
an obstruction to the construction Work
2.08 CURB STOPS or to reduce right-of-way difficulties.
The Contractor will not be allowed any
A. Curb stops shall be Ford B22-444M, or additional compensation due to shift of
accepted equal (no drain). lines. Additional compensation will be
allowed only for lengthening of lines.
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A-ALBEV 0409 02660 - 5
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3.02 SHORING AND SHEETING B. Proper implements, tools, equipment and
, facilities satisfactory to the Engineer shall be
A. Shoring, sheeting, bracing etc., shall be put provided and used by the Contractor for the
in place and maintained by the Contractor at safe and convenient prosecution of the
his own expense, as may be required to Work.
support the side of the excavation and to
prevent any movement which may in any C. At the time of pipe placement, the bedding
way endanger personnel or injure or delay conditions shall be such as to provide
the Work, or endanger adjacent buildings or uniform and continuous support for the pipe
other structures. Where sheeting and bracing between bell holes. Bell holes shall be
are used, the trench width shall be increased excavated as necessary to make the joint
accordingly. Trench sheeting shall remain in connections, but they shall be no larger than
place until pipe has been laid, tested for would be adequate. No pipe material shall
defects, repaired if necessary, and the earth be laid in water, nor when the trench or
around it compacted in a minimum of one bedding conditions are otherwise unsuitable
pass with vibrator equipment of a depth of or improper. Unless otherwise permitted by
one foot over the top of the pipe. The the Engineer, bell and spigot pipe shall be
sheeting and bracing shall be removed in laid with the bell ends facing upgrade and
such manner as not to endanger the the laying shall start at the downgrade end
constructed pipe or other structures, utilities and proceed upgrade.
or property, whether public or private. It
shall be the Contractor's responsibility and D. Before being lowered into laying position,
duty to be familiar with local and state the Contractor shall make a thorough visual
ordinances and regulations relating to this inspection of each pipe section and
type of Work and he shall assume the appurtenant units to detect damage or
responsibility for compliance therewith. unsound conditions that may need corrective
action or be cause for rejection. Inspection
3.03 CONNECTION TO EXISTING WATER procedure shall be as accepted by the
MAIN Engineer, with special methods being
required as he deems necessary to check out
A. Cut-In Connection: suspected defects more definitely. The
1. Isolate segment of pipe to be cut and Contractor shall inform the Engineer of any
drain water from the line. defects discovered and the Engineer will
2. Connect tee and sleeve assembly to pipe prescribe the required corrective actions or
ends. order rejection.
3. Install blocking as required.
E. Immediately before placement, the joint
B. Connect to Inplace Fitting: surfaces of each pipe section and fitting
1. Isolate segment of inplace pipe and shall be inspected for the presence of foreign
remove blocking as required. matter, coating blisters, rough edges or
2. Remove plug and drain water from the projections; and any imperfections so
line. detected shall be corrected by cleaning,
3. Install blocking as required. trimming, or repair as needed.
3.04 PIPE LAYING F. Any defective or damaged pipe which has
had its grade or joint disturbed after laying
A. The type, kind and class of pipe to be used shall be replaced.
shall be as shown on the Drawings or
specified herein. All pipe shall be laid and G. As each length of bell and spigot pipe is
maintained to the required line and grade. placed in laying position, the spigot end
shall be centered in the bell and the pipe
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forced home and brought to correct line and D. The cost of providing thrust restraints shall
grade. The pipe shall be secured in place be considered as incidental to the cost of the
with accepted backfill material, which shall pipe installation.
be thoroughly compacted around the pipe.
The joint areas shall remain exposed and 3.06 HYDRANTS
precautions shall be taken to prevent the soil
from entering the joint space until the joint A. Support hydrants upon a concrete base 18
seal is effected. inches square and a minimum of 6 inches
thick. Each hydrant shall be tied to the
H. At all times when pipe laying is not in fitting at the main with tie rods or as
progress, including noon hour and overnight otherwise accepted by the Engineer. Install
periods, all open ends of the pipe line shall hydrant of sufficient length to provide a
be closed by watertight plugs or other means minimum of 8 feet of ground cover over the
accepted by the Engineer. If water is present centerline of the lead pipe. The lowest outlet
in the trench, the seals shall remain in-place nozzle on the hydrant shall be not less than
until the trench is pumped completely dry. 19 inches, nor more than 24 inches above
the finished ground line or the final curb line
I. All stubs installed for future connection the case of a new street.
shall have prefabricated watertight plugs and
shall be restrained as an incidental item. B. Wherever a hydrant is set in pervious soil,
provide drainage at the base of the hydrant
3.05 THRUST RESTRAINTS - ALL FLUID by placing coarse gravel or crushed stone ,
PRESSURE SYSTEMS mixed with coarse sand from the bottom of '�
the trench to at least 6 inches above waste
A. Provide all crosses, tees, dead-ends, and openings in the hydrant, and to a distance of
bends with suitable means of overcoming 1 foot around the base elbow.
thrust including existing pipe where
required. The water main shall be restrained C. Wherever a hydrant is set in clay or other
using Megalug retaining system or accepted impervious soil, dig a drainage pit 2 feet in
equal. All retaining systems shall receive diameter and 3 feet deep below each hydrant
two coats of bitumastic paint. base and fill it completely with pea rock or
crushed stone and coarse sand, under and
B. Where connections to existing pipe are around the elbow and concrete base, to level
required, the existing pipe shall be exposed of 6 inches above the waste opening.
and tied based upon the following table.
D. Cover all material placed for drainage with a
C. Based upon a test pressure of 150 psi, the minimum of 2 layers of tar paper. No
following table shows the minimum length drainage system shall be connected to a
of pipe to be restrained where tied joints are sewer.
used.
E. Hydrants must maintain their position and
Pipe Dead End 45� 22_1�2o must not be knocked out of plumb during
Diameter in Tee Branch Bend Bend backfilling.
Inches or 90° Bend
6 23 LF 7 LF 3 LF F. Hydrants placed where the groundwater
8 25 LF 10 LF 5 LF table is less than 8 feet below the ground
10 39 LF 12 LF 5 LF
12 45 LF 16 LF 5 LF surface shall have the drain hole plugged
14 60 LF 20 LF 5 LF and be equipped with a tag stating the need
16 72 LF 24 LF 10 LF far pumping after use.
2004 Prairie Run Water Distribution Systems
A-ALBEV 0409 02660 - 7
, �
3.07 VALVES AND FITTINGS Contractor. Slowly fill each valved section
of pipe with water and apply the specified
' A. Unless otherwise specified or shown on the test pressure, measured at the lowest point of
Drawings, install cast iron valve boxes on all elevation, by means of a pump connected to
gate valves and on all direct burial butterfly the pipe in a satisfactory manner. The pump,
valves. Valve boxes shall be firmly pipe connection, gages and all necessary
supported to maintain centered and plumb apparatus shall be fumished by the
alignment over the wrench nut with box Contractor.
cover flush with the surface of the finished l. Gages and measuring devices must be
pavement or at such other level as may be accepted by the Engineer and the
directed by the Engineer. necessary pipe taps made as directed.
Before applying the specified test
3.08 JOINT CONDUCTIVITY: pressure, expel all air from the pipe.
Any cracked or defective pipes, joints,
A. Provide electrical bond across all joints fittings, valves or hydrants discovered in
between pipes and appurtenances. consequence of this pressure test shall
be removed and replaced by the
B. Install copper jumpers by either shop or Contractor with sound material and the
field applications. test shall be repeated until satisfactory to
the Engineer.
C. Fasten multiple jumper strips with silicon
bronze bolts and nuts. B. After the hydrostatics test has been
completed, a conductivity test shall be
D. Welding: conducted. When replacing an existing
1. Crrind surfaces to be welded to remove water main, the conductivity test shall be
coating and oxide and to provide clean completed prior to reconnecting the water
metal surface. services.
2. Use metallic-arc process for stop 1. The system(pipeline and hydrants) shall
applications. be tested for electrical continuity and
3. Use exothermic process for field current capacity. The electrical test shall
applications. be made after the hydrostatic pressure
4. Refinish welded area with protective test. Backfilling shall have been
coating after connection is made. completed. The line may be tested in
sections of convenient length as
3.09 TESTING WATER MAINS accepted by the Engineer.
a. Direct cunent of 350 amperes, more
A. After the line has been backfilled in or less 10 percent, shall be passed
accordance with these Specifications, test all through the pipe line for 5 minutes.
newly laid pipe, or any valved section by Current flow through the pipe shall
applying a hydrostatic pressure equivalent to be measured continuously on a
that specified in ANSUAWWA C600 except suitable ammeter and shall remain
that the minimum test pressure shall be 150 steady without intenuption or
pounds per square inch. The duration of excessive fluctuation throughout the
each such test shall be at least 2 hours. The 5 minute test period.
test shall determine the leakage which shall b. Insufficient current or intermittent
not exceed the limits specified in Table 6 of current or arcing, indicated by large
ANSUAWWA C600 at the end of this fluctuation of the ammeter needle,
Section. The apparatus for conducting the shall be evidence of defective
test shall consist of a pressure gage with electrical contact in the pipe line.
pump and appurtenances, and shall be The cause shall be isolated and
furnished and attached to the inains by the corrected. Thereafter, the section in
Water Distribution Systems 2004 Prairie Run
02660 - 8 A-ALBEV 0409
. �
which the defective test occurred existing distribution system, shall be
shall be retested as a unit and shall disinfected.
meet the requirements. 1. Materials: Dry Calcium Hypochlorite
c. Sources of D.C. cunent for these (comparable to commercial products
tests may be motor generators, lrnown as "HTH", "Perchloron", and
batteries, arc welding machines, etc. "Maxochlor") or Dry Chlorinated Lime
D.C. arc welding machines will (frequently called chloride of lime and
probably be the usual source. These known to industry as bleaching powder)
machines are available in adequate may be used.
capacity for these tests and are 2. Dosage: The dosage of calcium
equipped with controls for hypochlorite powder containing 70
regulating the cunent output. percent available chlorine shall be one
d. Cables from the power source to the pound for each 1,680 gallons of water
section of the system under test pipe capacity treated; chlorine-yielding
should be of sufficient size to carry compounds other than calcium
the test current without overheating hypochlorite powder may, on
or excessive voltage drop. Usable acceptance of the Engineer, be used in
sizes will probably be in the range amounts proportional to their available
of 2/0 to 4/0 A.W.G. chlorine content. This dosage is
e. Connections for the test shall be equivalent to a treatment of 50 parts per
made at hydrants. The hydrants shall million available chlorine. In like
be in the open position with the caps manner, one pound of calcium
on during the test. The cable shall hypochlorite powder will treat 2,100
NOT be clamped to the top gallons of water to 40 parts per million
operating nut. Note: After the test, chlorine.
the hydrant shall be shut off and a 3. Point of Application: A predetermined
cap loosened to allow hydrant dose shall be shaken into the pipe at the
drainage. Tighten cap after drainage. first joint attached to the existing water
f. A hook-on type D.C. ammeter pipe, and shall be repeated at frequent
placed on one of the cables leading predetermined intervals, preferably at
to the hydrant is an acceptable each pipe joint as the pipe laying
method of ineasuring cunent. progresses or as may be directed by the
g. In using arc welding machines, the Engineer.
current control should be set at a
minimum before starting. After B. When treated with dry calcium hypochlorite
starting the machine, advance the or with dry chlorinated lime, all newly laid
control until the current indicated on pipe shall be filled very slowly to avoid
the ammeter is at the desired test washing the powder to the extremity of the
value. Caution: In case of open pipeline.
, circuits at joints or connections, the
voltage across the defective joint or C. Water main shall be disinfected for at least
connection will be on the order of 24 hours. Prior to flushing, the chlorine
50-100 volts. residual shall be at least 10 ppm.
3.10 DISINFECTION (POTABLE LINES) D. Samples will be collected and tested for
bacteriological quality after the line has been
A. Before being placed in service, all new disinfected. The samples shall be collected
water distribution systems or extensions to by an independent testing laboratory for
existing systems, or any valved section of testing. The costs of the testing (lab costs)
such extension, or any replacement in the will be paid for by the Contractor.
2004 Prairie Run Water Distribution Systems
A-ALBEV 0409 02660 - 9
, �
3.11 REPEAT TESTING
A. If initial disinfection fails to produce
satisfactory bacteriological samples, the
disinfection shall be repeated until
satisfactory bacteriological samples are
obtained. Costs for additional disinfection
shall be borne by the Contractor.
3.12 MAINTAINING WATER SERVICE
A. While construction is underway, the
Contractor shall maintain water service to
existing users on a continuous basis until
service from the newly installed mains can
be restored. The means and methods used
are subject to the acceptance of the
Engineer. Overland service lines connected
to a hydrant via a common header is
recommended.
B. New water main shall be constructed, tested,
and placed in service on a block-by-block
basis as construction progresses. Temporary
water service shall be maintained on a
continuous basis and paid for as a lump sum.
Partial payments will be made on the basis
of the percent of total water main
constructed to date.
C. All service lines, headers, connections, and
appurtenances shall be disinfected in
accordance with Minnesota Health
Department and AWWA rules and
regulations.
END OF SECTION
Water Distribution Systems 2004 Prairie Run
02660 - 10 A-ALBEV 0409
[
Table 6 Allowable Leakage per 1000 ft(305 m) of Pipeline* - gph�'
AWWA C600
Nominal Pipe Diameter-in.
Avg.Test
Pressure 3 4 6 8 10 12 14 16 18 20 24 30 36 42 48 54
psi
450 0.48 0.64 0.95 1.27 1.59 1.91 2.23 2.55 2.87 3.18 3.82 4.78 5.73 6.69 7.64 8.60
400 0.45 0.60 0.90 1.20 1.50 1.80 2.10 2.40 2.70 3.00 3.60 4.50 5.41 631 7.21 8.11
350 0.42 0.56 0.84 1.12 1.40 1.69 1.97 2.25 2.53 2.81 337 4.21 5.06 5.90 6.74 7.58
300 0.39 0.52 0.78 1.04 1.30 1.56 1.82 2.08 2.34 2.60 3.12 3.90 4.68 5.46 6.24 7.02
275 037 0.50 0.75 1.00 1.24 1.49 1.74 1.99 2.24 2.49 2.99 3.73 4.48 5.23 5.98 6.72
250 0.36 0.47 0.71 0.95 1.19 1.42 1.66 1.90 2.14 2.37 2.85 3.56 4.27 4.99 5.70 6.41 �i
225 0.34 0.45 0.68 0.90 1.13 1.35 1.58 1.80 2.03 2.25 2.70 3.38 4.05 4.73 5.41 6.03
200 0.32 0.43 0.64 0.85 1.06 1.28 1.48 1.70 1.91 2.12 2.55 3.19 3.82 4.46 5.09 5.73
175 0.30 0.40 0.59 0.80 0.99 1.19 1.39 1.59 1.79 1.98 238 2.98 3.58 4.17 4.77 5.36
150 0.28 0.37 0.55 0.74 0.92 1.10 1.29 1.47 1.66 1.84 2.21 2.76 3.31 3.86 4.41 4.97
125 0.25 034 0.50 0.67 0.84 1.01 1.18 1.34 1.51 1.68 2.01 2.52 3.02 3.53 4.03 4.53
100 0.23 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50 1.80 2.25 2.70 3.15 3.60 4.05
*If the pipeline under test contains sections of various diameters,the allowable leakage will be the sum of the computed leakage for
each size.
i To obtain leakage in litres/hour,multiply the values in the table by 3.785.
2004 Prairie Run Water Distribution Systems
A-ALBEV 0409 02660 - 1 1
� l
SECTION 02720
STORM SEWER SYSTEMS
a. Measure each type installed as a
PART 1 GENERAL unit.
5. Aprons
1.01 SiTMMARY a. Measure each size and type installed
as a unit.
A. Section Includes: 6. Riprap
1. Furnish and Install: a. Measure by volume in cubic yards
a. Storm Sewer Pipe based on staked surface dimensions
b. Storm Manholes &Appurtenances and specified thiclrness.
c. Catch Basins &Appurtenances b. Measure by weight in tons based on
d. Aprons actual scale weight of the material
e. Riprap acceptably placed.
c. Measure each type and class
B. Related Sections: separately.
1. Section 02221 - Trench Excavation and 7. Geotextile Filter
Backfill a. Measure by area in square yards
based on staked surface dimensions
C. Method of Measurement with no allowance for overlap or
l. Pipe seams.
a. Measure by distance in linear feet. b. Measure each type separately.
b. Measure from structure centers and
pipe ends not including end D. Basis of Payment
sections. l. Payment for acceptable quantities of
c. Measure each pipe size and class storm sewer items shall be at the
separately. contract unit price as listed on the Bid
2. Manholes Form. All associated work items shall be
a. Measure by height in linear feet to considered incidental.
the nearest 0.1 foot. 2. Manhole and catch basin price in,cludes
b. Measure from the lowest invert to base, precast sections, cone section or
the top of the casting. cover slab as required, steps, rings,
c. Measure each size and type casting and concrete collar.
separately.
d. Measure each size and type installed 1.02 REFERENCES
as a unit.
3. Catch Basins A. ASTM A48 - Specification for Gray Iron
a. Measure by height in linear feet to Castings.
the nearest 0.1 foot.
b. Measure from the lowest invert to B. ASTM C76 - Specification for Reinforced
the top of the casting. Concrete Pipe.
c. Measure each size and type
separately. C. ASTM C361 - Specification for Reinforced
d. Measure each size and type installed Concrete Low Head Pressure Pipe.
as a unit.
4. Castings D. ASTM C478 - Specification for Precast
Reinforced Concrete Manhole.
2004 Prairie Run Storm Sewer Systems
02720 - 1
A-ALBEV 0409
1.03 SUBMITTALS B. Joints shall be neoprene gasket joints. Said
gasket joints must be accepted by the
A. Submit complete Shop Drawings and details Engineer on the basis of data furnished by
for all pipe, fittings, structures and other the manufacturer.
special appurtenances. Include required
submission for acceptance, including all C. No compensation will be given for bends,
manufacturer's product data, dimensions, caps, plugs,reducers, and sleeves.
sizes, types, maximum loadings, and thrust
anchorages. 2.02 REINFORCED CONCRETE SEWER
PIPE(RCP) AND END SECTIONS
B. Source and gradation of each soil material to
be used for bedding and backfill. A. Reinforced concrete sewer pipe and end
sections shall conform to Mn/DOT 3236 and
1.04 QUALITY ASSURANCE shall have rubber gasket joints, Mn/DOT
3726. The class of pipe is stated on
A. Work shall be done in accordance with Drawings.
applicable state and local codes, rules and
ordinances. B. End sections shall be provided with a
galvanized trash guard in accordance with
1.05 DELIVERY OF MATERIALS Drawings, which shall be considered
incidental to the cost of the end section. End
A. Inspect all pipe and materials during the sections shall be tied back a minimum of 3
unloading process. pipe joints with accepted pipe ties.
B. Notify Engineer of any cracked, flawed or 2.03 CORRUGATED METAL PIPE(CMP)
otherwise defective material.
A. Corrugated metal pipe shall conform to
C. Remove all materials found to be AASHTO M-36 and gage indicated on
unsatisfactory by the Engineer from the site. Drawings.
1.06 STAKING B. Corrugated metal pipe aprons shall conform
� to Mn/DOT Standard Plate 3129A.
A. The Engineer shall provide necessary
staking for all Work under this Section. The 2.04 MANHOLE
Contractor shall give the Engineer 48 hours
prior notice when survey stakes are needed. A. Manhole materials are as follows:
Construction stakes will be provided as
Material Class or T e S ecification
follows: Concrete ASTM C478
1. Storm sewer offset stakes, 50-foot Reinforcin Grade 60 ASTM A615
intervals -once. ASTM C478
Manhole 12"minimum width Aluminum or
with minimum 6" alloy
PART 2 PRODUCTS Steps projection, 16"o.c. Polypropylene
coated
2.01 CORRUGATED POLYETHYLENE Precast
PIPE (HDPE) Segmental Radial Solid ASTM C-139
Blocks
A. Polyvinyl chloride pipe shall conform to Manhole Grade MA ASTM C-32
AASHTO M-294 and ASTM F667 and shall Brick
be used to a depth not to exceed 20 feet. Mortar One part Ty e I ASTM C-32
2004 Prairie Run
Storm Sewer Systems A-ALBEV 0409
02720 - 2
Portland Cement constructed pipe or other structures, utilities
and 3 parts clean or property, whether public or private. It
sha sand shall be the Contractor's responsibility and
duty to be familiar with local and state
2.05 MATERIALS ordinances and regulations relating to this
type of Work and he shall assume the
A. All materials shall be in accordance with the responsibility for compliance therewith.
respective Mn/DOT Specification as
follows: 3.03 MANHOLES AND CATCH BASIN
1. Riprap Materials -Mn/DOT 3601 CONSTRUCTION
2. Geotextile Filter (Type III or N) -
Mn/DOT 3733 A. Construct manholes and catch basins in
3. Provide Type III under the following: accordance with Drawings.
a. Class I and Class II Field Stone
b. Class I Quarry Stone B. Provide trench excavation, foundations, and
c. Gabions backfill in accordance with Section 02221.
d. Revet Mattresses
C. Set bottom precast section in a full mortar
bed on the base.
PART 3 EXECUTION
D. Locate steps within 1 inch of vertical
3.01 LOCATION OF WORK alignment and within 1 inch of required
vertical spacing.
A. It may be necessary for the Engineer to shift
lines a reasonable amount to avoid an E. Fill the joints between sections and around
obstruction to the construction Work or to pipes with mortar or an approved joint
reduce right-of-way difficulties. The compound.
Contractor will not be allowed any
additional compensation due to shift of 3,04 CASTING ADJUSTMENT
lines. Additional compensation will be
allowed only for lengthening of lines. A. Adjust castings within the roadway surface
� prior to placement of final bituminous
3.02 SHORING AND SHEETING course.
A. Shoring, sheeting, bracing, etc., shall be put B. Keep excavation for adjustments to a
in place and maintained by the Contractor at minimum.
his own expense, as may be required to
support the side of the excavation and to C. Replace excavated areas in kind.
prevent any movement which may in any
way endanger personnel or injure or delay D. Provide adjusting rings and concrete collar
the Work or endanger adjacent buildings or in accordance with plan details to establish
other structures. Where sheeting and bracing required casting elevation.
are used, the trench width shall be increased
accordingly. Trench sheeting shall remain in E. Set casting on a full mortar bed.
place until pipe has been laid, tested for
defects, repaired if necessary, and the earth F. Set top of casting to 1/4 inch below and
around it compacted in a minimum of one parallel to proposed roadway surface.
pass with vibrator equipment to a depth of
one foot over the top of the pipe. The
sheeting and bracing shall be removed in
such manner as not to endanger the
2004 Prairie Run Storm Sewer Systems
A-ALBEV 0409 02720 - 3
� �
3.0� PIPE LAYING F. Any defective or damaged pipe which has
had its grade or joint disturbed after laying
A. The type, kind and class of pipe to be used shall be replaced.
shall be as shown on the Drawings or
specified herein. All pipe shall be laid and G. As each length of bell and spigot pipe is
maintained to the required line and grade. placed in laying position, the spigot end
shall be centered in the bell and the pipe
B. Proper implements, tools, equipment and forced home and brought to conect line and
facilities satisfactory to the Engineer shall be grade. The pipe shall be secured in place
provided and used by the Contractor for the with accepted backfill material, which shall
safe and convenient prosecution of the be thoroughly compacted around the pipe.
Work. The joint areas shall remain exposed and
precautions shall be taken to prevent the soil
C. At the time of pipe placeznent, the bedding from entering the joint space, until the joint
conditions shall be such as to provide seal is effected.
uniform and continuous support for the pipe
between bell holes. Bell holes shall be H. At all times when pipe laying is not in
excavated as necessary to make the joint progress, including noon hour and overnight
connections, but they shall be no larger than periods, all open ends of the pipe line shall
would be adequate. No pipe material shall be closed by watertight plugs or other means
be laid in water nor when the trench or accepted by the Engineer. If water is present
bedding conditions are otherwise unsuitable in the trench, the seals shall remain in-place
or improper. Unless otherwise pemutted by until the trench is pumped completely dry.
the Engineer, bell and spigot pipe shall be
laid with the bell ends facing upgrade and I. All stubs installed for future connection
the laying shall start at the downgrade end shall have prefabricated watertight plugs and
and proceed upgrade. shall be restrained as an incidental item.
D. Before being lowered into laying position, 3.06 CLEArTING
the Contractor shall make a thorough visual
inspection of each pipe section and A. Remove all dirt and foreign material from
appurtenant units to detect damage or the pipe and structure interiors.
unsound conditions that may need corrective
action or be cause for rejection. Inspection
procedure shall be as accepted by the END OF SECTION
Engineer, with special methods being
required as he deems necessary to check out
suspected defects more definitely. The '
Contractor shall inform the Engineer of any �
defects discovered and the Engineer will
prescribe the required corrective actions or �
order rejection. �
E. Immediately before placement, the joint
� surfaces of each pipe section and fitting
shall be inspected for the presence of foreign
matter, coating blisters, rough edges or
projections, and any imperfections so
detected shall be corrected by cleaning,
trimming, or repair as needed.
Storm Sewer Systems 2004 Prairie Run
02720 - 4 A-ALBEV 0409
D. ASTM C478 - Specification for Precast 1.06 STAKING
Reinforced Concrete Manhole
A. The Engineer shall provide necessary
E. ASTM D2321 - Recommended Practice for staking for all Work under this Section. The
Installation of Flexible Thermo-plastic Contractor shall give the Engineer 48 hours
Sewer Pipe prior notice when survey stakes are needed.
Construction stakes will be provided as
F. ASTM D3034 - Specification for PVC follows:
Sewer Pipe and Fittings 1. Water main and sanitary sewer offset
stakes (one set), 50-foot intervals - once.
G. ANSI A21.4 - Standard for Cement -Mortar
Lining for Ductile Iron Pipe and Fittings
PART 2 PRODUCTS
H. ANSI A21.11 - Standard for Rubber -
Gasket 7oints for Ductile Iron Pressure Pipe 2.01 POLYVINYL CHLORIDE PIPE(PVC) -
and Fittings SAlVITARY
I. ANSI A21.51 - Standard for Ductile Iron A. Conform to ASTM D3034 (SDR35) or
Pipe Centrifugally Cast ASTM F789 and use to a depth not to
exceed 20 feet. Sewer pipes and wyes with a
7. ANSI A21.53 - Standard for Ductile Iron depth greater than 20 feet shall be SDR 26
Compact Fittings, 3 inch through 16 inch PVC.
1.03 SUBMITTALS B. Joints shall be elastomeric gasket joints
accepted by the Engineer on the basis of
A. Submit complete Shop Drawings and details data furnished by the manufacturer.
for all pipe, fittings, structures, valves,
operators, and ott�er special appurtenances. C. An accepted water stop gasket shall be used
This shall include all manufacturers' product on the sewer main where it enters and exits a
data, dimensions, sizes, types, maximum manhole. The gasket shall be placed near the
loadings, and thrust anchorages. center of the manhole wall.
1.04 QUALITY ASSURANCE D. No compensation to be given for bends,
caps, plugs, reducers, and sleeves used on
A. Work shall be done in accordance with main sewer or service installation.
applicable state and local codes, rules and
ordinances. 2.02 MANHOLE
1.05 DELIVERY OF MATERIALS A. Manhole materials are as follows:
A. Inspect all pipe and materials during Material Class or T e S ecification
unloading process. Concrete ASTM C478
ASTM A615 for
Reinforcing Grade 60 Billet steel bars
B. Notify Engineer of any cracked, flawed or 12"min. width ASTM C478
otherwise defective material. Manhole with min. 6" Aluminum alloy
Steps projection or polypropylene
C. Remove all materials found to be 16" o.c. coated
unsatisfactory by the Engineer from the site. Precast
Segmental Radial solid ASTM C-139
Blocks
Manhole Grade MA ASTM C-32
Sanitary Sewer Systems 2004 Prairie Run
02730 - 2 A-ALBEV 0409
Brick Generally, these locations will agree with
One part type 1 those indicated on the Drawings; however,
portland cement Contractor shall not install a service until its
Mortar and three parts ASTM C-32 location is verified by the Engineer. It will
clean sharp be Contractor's responsibility to keep an
sand accurate written record of the location and
elevation of each service and submit this to
B. An accepted water-tight gasket shall be used the Engineer prior to backf'illing.
on all pipes entering and exiting manhole,
unless specifically noted on the Drawings as 2.05 INSULATION BOARD
not required.
A. Meet the requirements of MN/DOT 3760.
2.03 DUCTILE IRON PIPE AND FITTINGS Thickness shall be specified on the
Drawings.
A. Where specified, the pipe furnished shall be
of the ductile iron type, Class 52, and g. Formed by the expansion of polystyrene
conform to the requirements of AWWA base resin in an extrusion process and shall
C151/ANSI A-21.51 (Ductile Iron Pipe be homogeneous, and essentially uni-
Centrifugally Cast in Metal Molds or Sand- cellular. The surface of the boards shall be
Lined Molds). extruded, with skins. The material shall
conform to the following requirements:
B. Fittings shall conform to the requirements of
ANSI A21.10, A2L11 and A21.4, or ductile Compressive strength at 35 psi minimum
iron compact fittings mechanical joint ield or 5°Io deflection
confornung to ANSI A21.53, A21.11 and Flammability Self extin uishin
A21.4. Water absorption after 24
hours immersion,by 0.25°Io maximum
C. Furnish with cement mortar lining meeting volume
requirements of AVJWA C104/ANSI A21.4 Thermal Conductivity, at 0.23 maximum
for standard thickness lining. Exterior mean temperature of 75° F
surfaces of the pipe and fittings shall have
tar or bituminous seal coating at least 1 mil 2,06 MANHOLE SEALS '
thick. Spotty or thin seal coating, or poor
coating adhesion, shall be cause for A. Casting seals shall be manufactured by j
rejection. InfiShield,Inc. or accepted equal. �'
2.04 SERVICE LINES
A. The service lines, as placed between the
PART 3 EXECUTION
mains and property line, shall have a 3.01 PREPARATION
minimum of 8 feet of cover; therefore,
service lines must be placed (incidental to p. It may be necessary for the Engineer to shift
the Project) beneath any obstruction which lines a reasonable amount to avoid an
would prohibit the stated cover if the service obstruction to the construction Work or to
line was placed on top of the said reduce right-of-way difficulties. There will
obstruction. If tunneling or jacking of be no additional compensation due to shift
building services is required, the method of lines. Additional compensation will be
used shall be accepted by the Engineer. allowed only for lengthening of lines.
B. All building service locations will be
established in the field by the Engineer.
Sanitary Sewer Systems
2004 Prairie Run 02730 - 3
A-ALBEV 0409
3.02 SHORING AND SHEETING C. Extend service pipe to a point 9 feet beyond
the right-of-way line or to the easement line
A. Shoring, sheeting, bracing etc. shall be put as designated on the plans.
in place and maintained by Contractor at his
own expense, as may be required to support D. Install pipe at minimum 1 percent to
the side of the excavation and to prevent any maximum 2 percent grade.
movement which may in any way endanger
personnel or injure or delay the Work, or E. Place gasketed plug at end of pipe.
endanger adjacent buildings or other
structures. Where sheeting and bracing are F. Mark end of service according to details.
used, the trench width shall be increased
accordingly. Trench sheeting shall remain in 3.05 RISER PIPE
place until pipe has been laid, tested for
defects, repaired if necessary, and the earth A. Extend riser from the service connection at
around it compacted in a minimum of one 45-degree angle above horizontal to a point
pass with vibrator equipment to a depth of 15 feet below street grade.
one foot over the top of the pipe. The
sheeting and bracing shall be removed in B. Install riser pipe against undisturbed trench
such manner as not to endanger the wall.
constructed pipe or other structures, utilities
or property, whether public or private. It C. Place concrete collar around service
shall be Contractor's responsibility and duty connection as shown on the plan detail.
to be familiar with local and state ordinances
and regulations relating to this type of Work 3.06 PIPE LAYING
and he shall assume the responsibility for
compliance therewith. A. All pipe shall be laid and maintained to the
required line and grade.
3.03 MANHOLE INSTALLATION
B. Proper implements, tools, equipment and
A. Place precast manhole base on compacted facilities satisfactory to the Engineer shall be
granular subgrade. provided and used by Contractar for safe
and convenient prosecution of the Work.
B. Install manhole in accordance with plan
details. C. At the time of pipe placement, the bedding
conditions shall be such as to provide
C. Locate steps within 1 inch of vertical uniform and continuous support for the pipe
alignment and within 1 inch of required between bell holes. Bell holes shall be
vertical spacing. excavated as necessary to make the joint
connections, but they shall be no larger than
D. Provide monolithic base for drop manholes. would be adequate. No pipe material shall
be laid in water, nor when the trench or
E. Install internal chimney seals in accordance bedding conditions are otherwise unsuitable
with manufacturer's instructions. or improper. Unless otherwise permitted by
the Engineer, bell and spigot pipe shall be
3.04 SERVICE CONNECTIONS laid with the bell ends facing upgrade, and
the laying shall start at the downgrade end
A. Install at locations as directed. and proceed upgrade.
B. Place fitting branches at a 15 degree to 45- D. Before being lowered into laying position,
degree angle above horizontal. make a thorougl� visual inspection of each
pipe section and appurtenant units to detect
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damage or unsotind conditions that may thrust, including existing pipe where
need corrective action or be cause for required. The pressure main shall be
rejection. Inspection procedure shall be as restrained using Megalug Retaining System
accepted by the Engineer, with special or accepted equal. All retaining systems
methods being required as he deems shall receive two coats of bitumastic paint.
necessary to check out suspected defects
more definitely. Inform the Engineer of any B. Where connections to existing pipe are
defects discovered and the Engineer will required, the existing pipe shall be exposed
prescribe the required corrective actions or and tied based upon the following table.
order rejection.
C. Based upon a test pressure of 150 psi, the
E. Immediately before placement, the joint following table shows the minimum length
surfaces of each pipe section and fitting of pipe to be restrained where tied joints are
shall be inspected for the presence of foreign used.
matter, coating blisters, rough edges or pipe Dead end tee' 22-
projections; and any imperfections so diameter in branch or 45° 1/2°
detected shall be corrected by cleaning, inches 90° bend bend bend
trimming, or repair as needed. 6 23 LF 7 LF 3 LF
g 25 LF 10 LF 5 LF
F. Any defective or damaged pipe which has lp 39 LF 12 LF 5 LF
had its grade or joint disturbed after laying,
shall be replaced. D. The cost of providing thrust restraints shall
be considered as incidental to the cost of the
G. As each length of bell and spigot pipe is pipe installation.
placed in laying position, the spigot end
shall be centered in the bell and the pipe 3.08 VALVES AND FITTINGS
forced home and brought to correct line and
grade. The pipe shall be secured in place �,. Unless otherwise specified or shown on the
with accepted backf'ill material, thoroughly Drawings, install cast iron valve boxes on all
compacted around the pipe. The joint areas gate valves and on all direct burial butterfly
shall remain exposed and precautions shall valves. Valve boxes shall be firmly
be taken to prevent the soil from entering the supported to maintain centered and plumb
joint space until the joint seal is effected. alignment over the wrench nut with box
cover flush with the surface of the finished
H. At all times when pipe laying is not in pavement or at such other level as may be
progress, including noon hour and overnight directed by the Engineer.
periods, all open ends of the pipe line shall
be closed by watertight plugs or other means 3.09 TESTING PRESSURE MAINS
accepted by the Engineer. If water is present
in the trench, the seals shall remain in-place A. After the line has been backfilled in
until the trench is pumped completely dry. accordance with these Specifications, test all
newly laid pipe, or any valved section, by
I. All stubs installed for future connection applying a hydrostatic pressure equivalent to
shall have prefabricated watertight plugs and that specified in ANSUAWWA C600,
shall be restrained as an incidental item. except that the minimum test pressure shall
be 150 pounds per square inch. The duration
3.07 THRUST RESTRAINTS - ALL FLUID of each such test shall be at least 2 hours.
PRESSURE SYSTEMS The test shall determine the leakage which
shall not exceed the limits specified in Table
A. Provide all crosses, tees, dead-ends, and 6 of ANSUAWWA C600 at the end of this
bends with suitable means of overcoming
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Section. The apparatus for conducting the the tape to the Owner. Provide a log
test shall consist of a pressure gage with showing the location of all service
pump and appurtenances and shall be connections accurate to within one foot of
furnished and attached to the mains by the actual location. Televising the sanitary
Contractor. Slowly fill each valved section sewer shall be considered incidental.
of pipe with water and apply the specified
test pressure, measured at the lowest point of C. Where it is necessary to pump sewage
elevation, by means of a pump connected to overnight, provide an operator to stay with
the pipe in a satisfactory manner. The pump, the pumping operation until construction
pipe connection, gages and all necessary operations resume the next day. Sewer
apparatus shall be furnished by Contractor. service lines to individual users may be
1. Gages and measuring devices must be disconnected for a period not to exceed 12
accepted by the Engineer and the hours in any 1 day. Maintaining sanitary
necessary pipe taps made as directed. sewer service shall be paid for as a lump
Before applying the specified test sum.
pressure, expel all air from the pipe.
Any cracked or defective pipes, joints, 3.12 MANHOLE SEAL INSTALLATION
fittings or valves discovered in
consequence of this pressure test shall A. The anticipated procedure for installing
be removed and replaced by Contractor seals shall take into account that the
with sound material and the test shall be manhole structures are adjusted 2 times. The
repeated until satisfactory to the initial adjustment normally raises the casting
Engineer. to just below the interim base course level
prior to freeze-up. The final adjustment shall
3.10 REPEAT TESTING take place prior to paving of wear course.
A. If initial disinfection fails to produce B. On manholes, the external seal system, top
satisfactory bacteriological samples, the and bottom, shall be installed at the time of
disinfection shall be repeated until the initial adjustment; however, the top
satisfactory bacteriological samples are section shall be installed without the use of
obtained. Costs for additional disinfection mastic. At the time of final adjustment, the
shall be borne by Contractor. Contractor shall remove the top section of
neoprene rubber and add extensions if
3.11 MAINTAINING SEWER SERVICE necessary to meet height and overlap
requirements. Finally, the upper section
A. While construction is underway, the shall then be replaced in its' final position
Contractor shall maintain the flow in using mastic in accordance with the
sanitary sewers on a continuous basis until manufacturer's recommendation.
service from the newly constructed mains
can be restored. The means and methods C. The seal shall be multi-section with a
used are subject to the acceptance of the neoprene rubber top section, and all lower
Engineer. Sewers shall be plugged by means sections made of EPDM rubber with a
of an inflatable plug, and all pumps, portable minimum thickness of 60 mil. Each unit
generators, hoses, and related items shall consist of a top and bottom section and
appurtenant to the Work shall be provided shall have mastic on the bottom of the
by the Contractor. Sanitary sewer shall be bottom section, and mastic on the top of the
hooked up as the main is installed. top section. The mastic shall be non-
hardening butyl rubber sealant and shall seal
B. In lieu of air testing, televise the entire to the cone/top slab of the CB/MH and over
length of sanitary sewer main constructed the lip of the casting. One unit shall seal a
under this Contract and provide 2 copies of casting and up to six 2-inch adjusting rings.
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Depending on the number of adjusting rings C. If the infiltration, exfiltration or air tests fail
needed, the bottom section will either be 6 to meet requirements specified herein, the
or 12 inches in height. A 12-inch-high Engineer reserves the right to request
bottom section will cover up to six 2-inch additional air testing or television work to be
adjusting rings. If there are more adjustment done to locate leaks. The Contractor shall
rings per installation, there will be a receive no additional compensation for this
requirement for an 8-inch EPDM rubber testing or inspection work, nor for repairs or
extension section. There will not be an extra corrective work required to be done to the
pay item for this extension. sewers. The exfiltration test shall be used in
areas where no groundwater is present.
D. Each of these extension sections shall cover
up to 2 more adjusting rings. Each extension D. Test Procedure-Hydrostatic (Exfiltration
shall overlap the bottom section by 2 inches, Test)
and shall be overlapped by the top section 1. The test section shall be bulkheaded and
by 2 inches. the pipe subjected to a hydrostatic
pressure produced by a head of water at
3.13 SANITARY SEWER TELEVISING a depth of 3 feet above the top of the
sewer pipe at the upper manhole under
A. Televise the entire length of sanitary sewer test. In areas where groundwater exists,
main constructed under this Contract and this head of water shall be 3 feet above
provide two copies of the tape to the Owner. the existing water table.
The Contractor shall also provide a log 2. This head of water shall be maintained
showing location of all service connections for a period of one hour during which it
accurate to within 1 foot of actual location. is presumed that full absorption of the
Televising shall be considered incidental. pipe body has taken place and thereafter
for a further period of 1 hour for the
B. Prior to televising the sanitary sewer actual test of leakage. During this 1 hour
constructed under this Contract, the test period, the measured maximum
Contractor shall clean the lines with a sewer allowable rate of exfiltration for any
jet cleaning truck. All accumulated debris section of sewer shall be 100 gallons per
shall be removed from the sanitary sewer by inch diameter per mile of pipe per 24
a vacuum truck or other means acceptable to hours.
the Owner. Sewer cleaning shall commence
one manhole downstream of the project E. Test Procedure-Air
connection point. Cleaning shall be 1. Perform these tests with equipment
considered incidental. similar to Air-Loc equipment
manufactured by Cherne Industrial, Inc.,
3.14 TESTING GRAVITY SEWER MAINS Hopkins, Minnesota.
2. The air test shall be made when the pipe
A. Upon completion of the sewer construction is clean. The line shall be plugged at
and before house services are connected, each manhole with pneumatic balls.
sewers shall be cleaned and lamped. Runs of Low pressure air shall be introduced
sewer between manholes shall be straight into the plugged line until the internal
and true. air pressure reaches 4.0 psi greater than
the average back pressure of any
B. Gravity sewer pipe 27 inches and smaller groundwater pressure that may
shall be air tested as described herein. submerge the pipe. Groundwater
Gravity sewer larger than 27 inches shall be pressure on the submerged pipe can be
tested for infiltration as described herein. determined by multiplying the amount
of water above the pipe, in feet, by
0.433. This number is then added to the
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initial 4.0 psi introduced into the
plugged line. At least 2 minutes sha11 be �
allowed for the air temperature to
stabilize before readings are taken and
the timing started.
3. The portion of lines being air tested
shall pass if it does not lose air at a rate
to cause the pressure to drop from 3.5 to
3.0 p.s.i.g. (greater than the average
back pressure of any groundwater that
may submerge the pipe) in less time
than listed as shown below.
F. Infiltration Test
l. Infiltration tests shall be made to
determine the amount of groundwater
infiltration into the sewer.
Measurements will be taken by means
of a weir placed in the line or by
methods as deternuned by the Engineer.
The maximum allowable rate of leakage
shall be 100 gallons per inch diameter
per mile of pipe per 24 hours for any
section of pipe.
3.15 DEFLECTION TEST
A. Perform on flexible pipe after the backfill
has been in place at least 30 days. No pipe
shall exceed a deflection of 5 percent; if the
deflection tests are to be run using a rigid
ball or mandrel, it shall have a diameter
equal to 95 percent of the inside diameter of
the pipe. The tests shall be performed
without use of a mechanical pulling device.
Any pipe not meeting the deflection test
shall be repaired at no cost to the Owner.
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SECTION 02732
WET PIT SEWAGE PUMPING STATION
D. Basis of Payment
PART 1 GENERAL 1. Payment for the wet pit sewage
pumping station shall be at the� lump
1.01 SLTMMARY sum contract unit price as listed on the
Bid Form. All associated work items
A. Section Includes: will be considered incidental.
1. Furnish and install:
a. Precast Concrete Vault 1.02 REFERENCES
b. Submersible Wastewater Pumping
Units and Appurtenances A. ASTM C-48 - Specification for
c. Pump Access Equipment Gray Iron Castings
d. Internal Piping
B. ASTM A-126 - Specification for
B. Related Sections Gray Iron Castings for Valves, Flanges and
1. Section 02100 - Site Preparation Pipe Fittings
2. Section 02221 - Trench Excavation and
Backfill C. ASTM C-478 - Specification for
3. Section 02538 - Sewage Forcemain Precast Reinforced Concrete Manhole
4. Section 02575 -Valve Vault Sections
5. Division 16000-Electrical
D. AFBMA 9 - Load Ratings and
C. Method of Measurement Fatigue Life for Ball Bearings
1. Measure as a complete unit.
2. Unit includes: E. ASTME-270 - Specification for
a. Precast concrete vault, cover, base Mortar
and appurtenances
b. Access frame and cover F. Mn/DOT 3728 - Bituminous Mastic
c. Electrical service cables and conduit Joint Sealer for Pipe
d. Cable holder
e. Guide bars and support brackets 1.03 DESCRIPTION
f. Float switches and cables
g. Submersible wastewater pumping A. Submersible pumping units installed directly
units � in a wet pit.
h. Discharge connection and piping
i. Control center B. Units can be easily raised or lowered along
j. Telemetry system vertical guide bars without operator entering
k. Pipe connections the pit or manually disconnecting any
1. Foundation rock piping.
m. Guard posts
n. All forcemain piping as shown on C. Units can be raised to ground level for
plans inspection and repairs.
o. Valve vault and appurtenances
p. Connection to electrical power D. Units automatically connect to discharge
q. Start-up and training connection when lowered into place.
r. 0&M manuals
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E. Number of Pumping Units: 2 lA5 QUALITY ASSURANCE
F. The pumping units and discharge connection A. Factory-approved service facility with
shall be supplied by the same manufacturer. certified mechanics shall be located within
80 miles of the installation.
1.04 SUBMITTALS
1.06 WARRANTY
A. Shop drawings in accordance with Section
01300. A. Provide written guarantee of operation for
1. Certified dimensions of pumps, valves pumping units and appurtenant equipment
and appurtenances for a period of 5 years from the date of final
2. Certified pump curve, including head, acceptance.
capacity, horsepower, wire to water
efficiency B. The written guarantee shall contain a list of
3. Motor information parts and services under warranty for each
4. Anchor bolt details part and service.
5. Coatings
6. Certified B-10 bearing life calculations 1.07 MAINTENANCE ��
7. Motor performance chart showing '
curves for torque, current, power factor, A. Extra Materials
inpudoutput kw and efficiency. Include 1. Furnish the following spare parts in a �
data on starting and no-load suitable, waterproof,labeled container.
characteristics a. 1 set wear rings
8. Precast concrete vault details and b. 1 set mechanical seals
dimensions c. 1 set bearings
9. Precast valve vault details and d. 1 complete set o-rings and gaskets
dimensions
10. Access casting
11. Gate valves PART 2 PRODUCTS
12. Check valves
2.01 MANUFACTURERS
B. Certification of Explosion Proof Pumping
Units A. Pumping units and appurtenances shall be
manufactured by one of the following, or
C. Manufacturer's Instructions for Installation accepted equal. Equals must be accepted by
addendum prior to Bid.
D. Certified Installation Inspection and Start-up 1. Hydromatic HP GFX, 3 horsepower,
Report 460 volts, 3 phase.
2. Flygt CP 3067, 2 horsepower, 460 volt,
E. Operating and Maintenance data in 3 phase.
accardance with Section 01784 2.02 MANUFACTURED LTNITS
F. Warranty for Pumping Units and A. Precast Concrete Vault
Appurtenant Equipment 1. ASTM C-478
2. Provide cover for traffic ]oading
G. Name and address of factory-approved
service facility 2.03 EQUIPMENT
A. Pumping Units
1. Totally submersible
2. Discharge Size: 4 inch
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3. Capable of handling raw unscreened 2) Include one stationary ceramic
sewage with solids up to 3 inch diameter ring and one rotating carbide
4. Deliver 75 gallons per minute against a ring.
total dynamic head of 28 feet. d. Upper Seal
5. Capable of operating within a total 1) Isolate motor and oil chamber.
dynamic head range without 2) Include one stationary ceramic
overloading the motor nameplate rating. ring and one rotating carbon
(Excluding service factor). ring.
6. Explosion Proof in accordance with e. Design of oil chamber shall prevent
NEC requirements for Class 1, Division overfilling and provide soil
1 and 2. expansion capacity.
7. Exterior Shop Coating: 11. Bearings
a. Epoxy. a. Permanently lubricated upper radial
8. Pump Design and Construction and lower thrust bearing.
a. Major Components: b. AFBMA B-10 Bearing Life:
1) ASTM A-48 gray cast iron, Minimum 70,000 hour at the design
Class 30 minimum point. �
b. Exposed Hardware: c. Provide certified bearing life
1) 304 Stainless Steel calculations based on the design
c. Provide watertight seal between conditions.
pump and discharge elbow 12. Motor and Power Cable
d. Provide mechanical mating surfaces a. Motor
with viton or nitrile o-rings 1) Sealed, submersible
e. Mating surfaces shall provide for 2) 460 volt, 3 phase, 60 hertz
controlled compression of o-rings 3) Service Factor: 1.15
without specific torque requirements 4) Minimum Horsepower: 2 horse
f. Furnish wear ring(s) to provide power
efficient sealing between impeller 5) Stator Insulation: Class F, rated
and volute for 311°F
g. Pump design shall provide for 6) Continuous duty handling of
starting and operation without the
motor being submerged. 104°F pumped media
9. Impeller and Shaft 7) Capable of 15 starts per hour
a. Impeller: (minimum)
1) Non-clogging, fully vaned 8) Temperature rise at 104°F shall
2) Constructed of gray cast iron,
Class 30 minimum not exceed 176°F ,
b. Dynamically balance impeller to b. Cable
minimum 0.01 in-oz./Ib. impeller 1) Size in accordance with NEC
weight. and ICEA standards.
c. Furnish stainless steel shaft and 2) Provide sufficient length to
sleeves. reach junction box without '
d. Pump shaft shall be an extension of splicing. I
the motor shaft. c. Cable, entry system and motor shall
10. Mechanical Seal and Oil Chamber maintain watertight integrity at a
a. Furnish a tandem mechanical seal submergence of 40 feet.
� system consisting of two 13. Protection �
independent seal assemblies. a. Thermal Switches
b. Both seals shall be oil lubricated. 1) Furnish each winding with a
c. Lower seal: thermal switch.
1) Isolate pump and oil chamber. �
2004 Prairie Run Wet Pit Sewage Pumping Station
A-ALBEV 0409 02732 - 3
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0 2. Manufacturer's Standard Configuration
2) Switches shall open at 125 C,
stop motor and activate alarm. D. Lifting Devices
b. Leakage Sensor 1. Provide stainless steel cable to facilitate
1) Furnish leakage sensor to detect the inspection and removal of each
water leakage past the seals. pumping unit in a single lift.
2) Activate alarm if moisture is 2. Provide for connection to the submerged
detected between the seals. pumping units by means of a galvanized
3) Shutdown pumps if moisture is or stainless steel clevis without entering
detected in motor chamber. the wet well.
2.04 ACCESSORIES 3. Cable and clevis assembly shall be rated
for 150°Io of the pumping unit weight.
A. Access Frame and Cover
1. Double leaf. E. Interior Piping
2. Frame: 1. Pipe Material:
a. 1/4 inch extruded aluminum. a. Class 53 Cement-Lined Ductile Iron
3. Door Leaf: Pipe
a. 1/4 inch aluminum diamond plate 2. Joints:
with aluminum stiffeners as required a. Flanged
to withstand 150 psf live load. 3. Exterior Coating:
4. Torsion bar loaded for ease of operation. a. Epoxy
4. Hi-Build Epoxy
5. Door shall automatically lock at 90°. a. Type: 2-component, epoxy
6. Provide vinyl grip handle to release polyamide
cover for closing. b. Minimum solids: 69 percent
7. Locking Device: c. Abrasion: Federal Test Method
a. Exterior hasp. Standard No. 141, Method 6192, I
b. Slam lock. CS-17 wheel, 1,000 gm load; not
8. Apply bituminous coating to frame more than 195 mg loss after 1,000
exterior. cycles.
9. Hardware: d. Adhes.ion: Elcometer adhesion
a. Zinc-plated and chromate-sealed. tester; not less than 900 psi pull,
average of three trials.
B. Pump Guide Bars and Brackets e. Hardness: ASTM 3363 (pencil);
l. Material: must pass 3H.
a. Schedule 40 Stainless Steel f. Salt fog spray: ASTM B117, no
2. Diameter: more than 1/16 inch rust creepage at
a. As recommended by manufacturer. scribe and no more than 2 percent
3. Length: rusting of edges after 1,000 hours.
a. As required to extend from the g. Manufacturer: Tnemec Series 69, or
lower guide holder or the discharge equal."
connection to the upper guide holder 5. Fittings: Shall be flanged ductile iron
mounted or the access frame. epoxy coated outside, cement lined, 250
4. Provide two guide bars for each psi working pressure and shall meet in
pumping unit. all respects the provisions of the latest
5. Attach intermediate support brackets to American National Standard A21.10
discharge piping as recommended by (AWWA C110).
manufacturer.
F. Vent Pipe
C. Cable Holder 1. The vent pipe shall be constructed of 4
1. PVC Coated inch PVC Schedule 40 shall consist of
Wet Pit Sewage Pumping Station 2004 Prairie Run
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one 180 degrees below and section of B. Precast Concrete Vault
pipe, shall be screened at the open end l. Construct vault, base and cover in
and shall be grouted in the location and accordance with drawing details and
height indicted on the Drawings. elevations.
2. Provide trench excavation, foundation
G. Access panels shall have an internal grate and backfill in accordance with Section
which prevents accidental falls while the 02600.
main lid is open. The grate shall be Safe 3. Fill joints between barrel sections and
Hatch as manufactured by ITT Flygt or around pipe connections with mortar or
approved equal. approved joint compound.
4. All lift holes, joints, and adjusting rings
2.05 MATERIALS shall be sealed watertight, inside and
outside, with mortar. All inverts and
A. Rock Foundation sumps shall be constructed as indicated
1. Rock foundation for precast concrete on the Drawings or details. All concrete
vaults shall be sized as indicated on the work shall be trowelled to a smooth
Drawings. Granular materials sha11 surface in the opinion of the Engineer,
conform to the following: or shall be removed and replaced to the
satisfaction of the Engineer.
Sieve Size Percent PassinQ 5. Pipe to manhole connections for both
1 Inch 100 the wet well and valve vaults shall be
3/4 Inch 85 - 100 Type B as indicated in the details at the
3/8 Inch 30 -60 end of these Specifications. The annular
No. 4 0- 10 space shall not be filled with grout, but
No. 10 0 left open to pemut for future settlement.
All connections shall be watertight. '�
B. Geotextile Wrap: Geotextile wrap material i�
for around foundation rock shall conform to 3.02 FIELD QUALITY CONTROL '�
Mn/DOT Spec. 3733, Type V fabric.
A. Manufacturer's Field Service
C. Epoxy Coating: Inside walls and bottom of 1. Supervise installation of pumping units,
precast concrete vault shall be coated with discharge connection and piping, access
Tnemec 169 series Hi Build epoxy per equipment and float switches.
manufacturer's recommendation or accepted 2. Inspect and approve final installation.
equal. 3. Perform start-up of equipment and all
necessary adjustments and calibrations
D. Concrete pad: Mn/DOT Spec. 2521 concrete in accordance with manufacturer's
mix 3A32, membrane curing method. recommendations.
4. Provide written report certifying the
E. Manhole Joints: Shall be wrapped with following:
Wrapid-Seal. a. Installation was inspected and found
acceptable.
b. The required tests and inspections
PART 3 EXECUTION were performed and were found to
be within the manufacturer's
3.01 INSTALLATION recommended tolerances.
A. Pumping Units and Accessories B. Testing
1. Install all components in accordance l. Perform the following tests and
with the manufacturer's instructions. inspections at start-up:
a. Megger stator and power cables
2004 Prairie Run Wet Pit Sewage Pumping Station
A-ALBEV 0409 02732 - 5
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b. Check seal lubrication
c. Check for proper rotation '
d. Check power supply voltage
e. Check motor operating load and no
load current
f. Check level control operation and
sequence
3.03 DEMONSTRATION
A. Provide on-site operation and maintenance
training for the owner's staff.
B. Training shall include normal operation,
maintenance, troubleshooting and repair.
END OF SECTION
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