Standard Specifications for Road, Bridge, and Municipal Construction 2020 (M 41-10)

Page 9-242

Illumination, Signal, Electrical

9-29.16(2)C

Louvered Visors

Where noted in the Contract, louvered tunnel visors shall be furnished and installed.
Directional, Geometrically Programmed louvers shall be constructed to have a snug
fit in the signal visor. Louvers shall be flat black, constructed of aluminum or ABS and
polycarbonate plastic. Dimensions and arrangement of louvers shall be as shown in the
Contract.

9-29.16(2)D Vacant
9-29.16(2)E

Painting Signal Heads

Traffic signal heads shall be finished with two coats of factory applied dark green (SAE
AMS Standard 595) baked enamel or shall be finished with a dark green oven baked
powder coating comprised of resins and pigments. Aluminum end caps shall be painted to
match the color of the signal housing.

9-29.16(3) Polycarbonate Traffic Signal Heads

Polycarbonate signal heads shall be provided only when specifically identified in the
Contract. With the exception of top and bottom bracket mountings, polycarbonate
signal heads shall be installed with approved reinforcing plates located in signal sections
adjacent to the mounting hardware.

Polycarbonate employed in traffic signal fabrication shall tolerate an elongation prior
to break in excess of 90 percent. The green color shall be molded throughout the
head assembly. The optical system shall be Light Emitting Diodes as defined in

Section

9-29.16(2)A

. The entire optical system shall be sealed by a single neoprene gasket. The

signal head shall be formed to be used with standard signal head mounting accessories as
shown in

Section 9-29.17

. All hinge pins, latch assemblies, and reflector assemblies shall

conform to

Section 9-29.16(2)B

9-29.16(4) Traffic Signal Cover

The covers shall be manufactured from a durable fabric material, black in color with a
mesh front, and designed to fit the signal head configuration properly. The covers shall
have an attachment method that will hold the cover securely to the signal in heavy wind.
The covers shall be provided with a drain to expel any accumulated water.

9-29.17

Signal Head Mounting Brackets and Fittings

Vehicle and pedestrian signal head mountings shall be as detailed in the

Standard Plans

Material requirements for signal head mounts are as follows:

Aluminum
1.  Hinge fittings for Type E mount.
2.  Arms and slotted tube fittings for Type N mount.
3.  Tube clamp and female clamp assembly for Type N mount.

Illumination, Signal, Electrical

9-29

Bronze
1.  Terminal compartments for Type A, B, C, F, H, and K mounts.
2.  Collars for Type C, D, and F mounts.
3.  Ell fittings for Type L and LE mounts.
4.  Plumbizer for type M mounts.
5.  Messenger hanger and wire entrance fittings for Type P, Q, R, and S mounts.
6.  Balance adjuster for Type Q, R, and S mounts.

Galvanized Steel
1. Washers for Type A, B, C, D, F, H, and K mounts.
2. Fasteners for Type A, B, E, H, and K mounts.

Stainless Steel
1.  All set screws and cotter Keys.
2.  Bands or cables for Type N mount.
3.  Hinge pins for Type E mount.
4.  Bolts, nuts and washers for Type M mount.
5.  Bolt, nut and washers for Type L mount.
6.  Bolts, nuts, washers, and screw buckle swivels.

Steel
1.  Center pipes, nipples, elbow, and tee fittings for Type A, B, C, F, H, and K mounts.
2.  Multi-head mounting assemblies and spider assemblies for Type Q, R, and S mounts.
3.  Nipples for Type L, LE, P, Q, R, and S mounts.

Fittings for Type N mounts shall be installed unpainted. All other hardware for other
mounts shall be painted with two coats of factory applied traffic signal green baked
enamel.

Pins for messenger hanger fittings shall be a minimum of ½ inch in diameter.

Terminal compartments for Type A, B, C, F, H, and K mounts shall contain a 12 section
terminal block.

9-29.18

Vehicle Detector

Induction loop detectors and magnetometer detectors shall comply with current NEMA
Specifications when installed with NEMA control assemblies and shall comply with the
current California Department of Transportation document entitled “Transportation
Electrical Equipment Specifications”, specified in

Section 9-29.13(7)

when installed with

Type 170, Type 2070, or NEMA control assemblies.

Page 9-244

Illumination, Signal, Electrical

9-29.18(1) Induction Loop Detectors

When required in the Contract, amplifier units shall be provided with supplemental timing
features identified as follows:
1. Delay Timing – When delay timing is required, the unit shall delay detector output

for up to 15 seconds minimum, settable in one second maximum intervals.

2. Delay Timing With Gate – When delay timing with gate is required, the unit shall

provide delay timing features as noted above with the additional capability of
inhibiting delay timing when an external signal is applied.

3. Extension Timing – When extension timing is required, the unit shall extend the

detector output for up to 7 seconds minimum, settable in 0.5 second minimum
intervals.

4. Delay and Extension Timing With Gate – When delay and extension timing with

gate is required, the unit shall provide both delay and extension timing features
as noted above with the additional capability of inhibiting delay while enabling
extension upon application of an external signal. Without external signal, the unit
shall inhibit extension and enable delay.

9-29.18(2) Magnetometer Detectors

Magnetometer detector units and sensors shall conform to the following Specifications:
1. Operation – The magnetometer detector unit shall respond to changes in the earth’s

local magnetic field caused by the passage of a vehicle containing iron or steel over
the sensor unit.

2. Environmental Requirements – Satisfactory operation shall be attained over the

ambient temperature range from -30

○

F to 160

○

F. Operation shall be unaffected by

temperature change, water, ice, pavement deterioration, or electromagnetic noise.

3. Modes of Operation – Each detector channel shall be capable of functioning in any

of four front-panel selectable modes:
a. Presence – Time of detection shall be unlimited.
b. Extended Presence – The detection output shall extend for a timer set value of

up to 5 seconds after the detection zone has cleared.

c. Pulse – A single 30- to 50-millisecond pulse will be generated per detection

actuation.

d. Inhibited Pulse – The detection output will be inhibited for a time set value of

up to 5 seconds after the detection zone has cleared.

4. Response Time. Pick up and drop out times shall be consistently within

10 milliseconds.

5. Approach Speed. The unit shall be capable of detecting vehicles traveling from 0 to

80 mph.

6. Sensor Probes. Each channel of the detector unit shall be capable of operating up to

three sensing probes.

Illumination, Signal, Electrical

9-29

9-29.19

Pedestrian Push Buttons

Where noted in the Contract, pedestrian push buttons of tamper-resistant construction
shall be furnished and installed. They shall consist of a 2-inch nominal diameter plunger.
The switch shall be a three-bladed beryllium copper spring, rated at 10 amperes, 125
volts.

The pedestrian push-button assembly shall be constructed and mounted as detailed in
the Contract.

9-29.20

Pedestrian Signals

Pedestrian signals shall be Light Emitting Diodes (LED) type.

The LED pedestrian signal module shall be operationally compatible with controllers and
conflict monitors. The LED lamp unit shall contain a disconnect that will show an open
switch to the conflict monitor when less than 60 percent of the LEDs in the unit are
operational.

The Pedestrian signal heads shall be on the QPL or Contractor shall submit a
Manufacturer’s Certificate of Compliance, in accordance with

Section 1-06.3

, with each

type of signal head. The certificate shall state that the lot of pedestrian signal heads meet
the following requirements:
1. All pedestrian signal heads shall be a Walk/Don’t Walk module with a countdown

display.

2. All pedestrian displays shall comply with the MUTCD and ITE publication ST 011B,

VTCSH2 or current ITE Specification and shall have an incandescent appearance.
The Contractor shall provide test results from a Nationally Recognized Testing
Laboratory documenting that the LED display conforms to the current ITE and the
following requirements:
a. All pedestrian signals supplied to any one project shall be from the same

manufacturer and type but need not be from the same manufacturer as the
vehicle heads.

b. Each pedestrian signal face shall be a single unit housing with the signal

indication size, a nominal 16 inch × 18 inch with side by side symbol messages
with countdown display.

c. Housings shall be green polycarbonate or die-cast aluminum and the aluminum

housings shall be painted with two coats of factory applied traffic signal green
enamel (SAE AMS Standard 595-14056). All hinges and latches and interior
hardware shall be stainless steel.

3. Optical units for traffic signal displays shall conform to the following:

a. Pedestrian “RAISED HAND” and “WALKING PERSON” modules shall be the

countdown display type showing the time remaining in the pedestrian change
interval. When the pedestrian change interval is reduced due to a programming
change, the display may continue to show the previous pedestrian change

Page 9-246

Illumination, Signal, Electrical

interval for one signal cycle. During the following pedestrian change interval
the countdown shall show the revised time, or shall be blank. In the event of
an emergency vehicle preemption, during the following two cycles, the display
shall show the programmed pedestrian change interval or be blank. In the event
the controller is put in stop time during the pedestrian change interval, during
the following two cycles the display shall show the programmed clearance or
be blank. In the event there is railroad preempt during the pedestrian change
interval, during the following two cycles the display shall show the programmed
clearance or be blank. Light emitting diode (LED) light sources having the
incandescent appearance are required for Portland Orange Raised Hand and the
Lunar White Walking Person.

4. LED displays shall conform to the following:

a. Wattage (Maximum) – Portland Orange Raised Hand, 15 watts: Lunar White

Walking Person, 15 watts.

b.  Voltage – The operating voltages shall be between 85 VAC and 135 VAC.
c.  Temperature – Temperature range shall be -35°F to +165°F.
d.  LED pedestrian heads shall be supplied with Z crate visors. Z crate visors shall

have 21 members at 45 degrees and 20 horizontal members.

9-29.21

Flashing Beacon

Flashing beacons shall be installed as detailed in the Plans, as specified in the Special
Provisions, and as described below:

Controllers for flashing beacons shall be as specified in

Section 9-29.15

Beacons shall consist of single section, 8 or 12-inch traffic signal heads, three or four-way
adjustable, meeting all of the applicable requirements of

Section 9-29.16

. Displays (red

or yellow) may be either LED type or incandescent. Twelve-inch yellow displays shall be
dimmed 50 percent after dark.

Mounting brackets, mountings, and installation shall meet all applicable requirements of

Section 9-29.17

Lenses shall be either red or amber, glass or polycarbonate as noted in the Plans.

9-29.22 Vacant
9-29.23 Vacant
9-29.24

Service Cabinets

In addition to the requirements for service cabinets indicated in the Contract, the
following requirements shall apply:
1

Display an arc flash warning label that meets the requirements of ANSI Z535.

Illumination, Signal, Electrical

9-29

2. All electrical conductors, buss bars, and conductor terminals shall be copper.

Conductor insulation shall be either THW, XHHW, USE, or SIS.

3. If field wiring larger than that which the contactors or breakers will accommodate

is required by the Contract, a terminal board shall be supplied for use as a splicing
block.

4. The minimum size of all other load carrying conductors used within the service

cabinets shall be based on the National Electrical Code ampacity tables for not more
than three conductors in a raceway or cable.

5. Type B, B Modified, C, D, and E Cabinets shall have ventilation louvers on the lower

sides complete with screens. Type D and E shall also have rain-tight cabinet vents
with screens at the top. Cabinet vents shall be gasketed.

6. The Type B modified cabinets shall have one future use double pole circuit breaker.

Type D and E cabinets shall have two future use double pole circuit breakers. The
dead front cover shall have cutouts with for the entire breaker array, with blank
covers where no circuit breakers are installed. The receptacle shall be ground fault
interrupter equipped.

7. The minimum size of control circuit conductors used in service cabinets shall be 14

AWG stranded copper.

All electrical contactors shall have the loadside terminals toward the front (door side)
of the service cabinet.

8. Lighting contactors shall meet the requirements of Section 9-29.24(2).
9. All service enclosures shall be fabricated from steel or aluminum. If aluminum, they

shall be fabricated from 0.125 inch (minimum) 5052 H 32 ASTM designator or B209
aluminum. If steel, they shall be fabricated from 12-gage (minimum) steel, hot-dipped
galvanized per AASHTO M111.

10. All doors and dead front panels installed in service cabinets shall incorporate a

hinge placed in a vertical plane. Service doors shall be sealed with closed cell gasket
material. The side opposite the hinge shall be secured with quarter turn screws
or slide latch. No electrical devices shall be connected to the dead front panel.
However, every switch serviced through the dead front panel shall be appropriately
identified with its respective circuit designation by means of a screwed or riveted
engraved name plate. Such circuit identification shall be submitted for approval
together with the appropriate fabrication drawings. Dead front panels shall prevent
access to any exposed, live components, and shall cover all equipment except for
circuit breakers (including blank covers), the photocell test/bypass switch, and the
GFCI receptacle.

11. A typed index of all circuits shall be mounted on the cabinet door. Each index shall

show an entire panel section without folding. Index holders shall have metal returns
on the sides and bottom. A schematic of the main panel, any subpanels, circuits, and
control circuits shall be provided. The schematic shall be plastic coated and secured
in a metal holder.

Page 9-248

Illumination, Signal, Electrical

9-29.24(1) Vacant

9-29.24(2) Electrical Circuit Breakers and Contactors

All circuit breakers shall be bolt-on type, with the RMS-symmetrical interrupting
capacity described in this Section. Circuit breakers for 120/240/277 volt circuits shall
be rated at 240 or 277 volts, as applicable, with an interrupting capacity of not less than
10,000 amperes. Circuit breakers for 480 volt circuits shall be rated at 480 volts, and shall
have an interrupting capacity of not less than 14,000 amperes.

Lighting contactors shall be rated for tungsten or ballasted (such as sodium vapor,
mercury vapor, metal halide, and fluorescent) lamp loads. Contactors for 120/240/277
volt circuits shall be rated at 240 volts maximum line to line voltage, or 277 volts
maximum line to neutral voltage, as applicable. Contactors for 480 volt circuits shall be
rated at 480 volt maximum line to line voltage.

9-29.25

Amplifier, Transformer, and Terminal Cabinets

Amplifier, Terminal, and Transformer cabinets shall be NEMA 3R and the following:
1. All cabinets shall be constructed of welded 14 gage (minimum) hot-dipped

galvanized sheet steel, 14-gage, minimum type 316 stainless steel or 0.125 inch,
minimum 5052 alloy aluminum H32 ASTM designator minimum.

2. Nominal cabinet dimensions shall be:

Depth Height Width

a. Terminal

8″

16″

12″

b. Terminal

8″

24″

18″

c. Transformer up to 12.5 KVA

20″

48″

24″

Transformer 12.6 to 35 KVA

30″

60″

32″

3. Cabinet doors shall have a stainless steel piano hinge or shall meet the requirements

for the alternate hinge detailed for type B modified service cabinets. Doors less than
3 feet in height shall have two hinges. Doors from 3 feet to 4′ 8″ in height shall
have three hinges. Spacing of hinges for doors greater than 4′ 8″ in height shall not
exceed 14 inches center to center. The door shall also be provided with a three-point
latch and a spring loaded construction core lock capable of accepting a Best six pin
CX series core. The locking mechanism shall provide a tapered bolt. The Contractor
shall supply construction cores with two master keys. The keys shall be delivered to
the Engineer. Three-point latches are not required for terminal cabinets.

4.  All seams shall be continuously welded.
5.  All cabinets shall provide a gasketed door flange.
6.  Transformer cabinets shall provide a 9-square-inch minimum louvered vent.

Illumination, Signal, Electrical

9-29

7. Insulated terminal blocks shall be 600 volt, heavy-duty, barrier type. The terminal

blocks shall be provided with a field-side and a control-side connector separated by a
marker strip. One spare 12-position insulated terminal block shall be installed in each
terminal cabinet and amplifier cabinet.

8. Each non-pad mounted Terminal, Amplifier and Transformer cabinet shall have ¼ inch

drain holes in back corners. Each pad mounted Terminal, Amplifier and Transformer
cabinet shall drain to a sump and through a ⅜ inch diameter drain pipe to grade as
detailed in the Standard Plans.

9. Mounting shall be as noted in the Contract.
10. Transformer cabinets shall have two separate compartments, one for the transformer

and one for the power distribution circuit breakers. Each compartment shall be
enclosed with a dead front. There shall be an isolation breaker on the input (line)
side of the transformer, and a breaker array on the output (load) side. Each breaker
shall be labeled with the device name by means of a screwed or riveted engraved
name plate.

Page 9-250

Water Distribution Materials

9-30

Water Distribution Materials

This Specification addresses pipe and appurtenances 16 inches in diameter and smaller.
Water distribution material incorporated in the Work shall be new.

The Contractor shall provide to the Engineer the names of the manufacturer(s) of
the water distribution materials proposed for inclusion in the Work, which materials
shall conform in every respect to these Specifications. If so required by the Special
Provisions, the Contractor shall provide to the Engineer in addition to the names of
the manufacturer(s) of the water distribution materials, a Manufacturer’s Certificate of
Compliance meeting the provisions of

Section 1-06.3

, for the materials proposed for

inclusion in the Work. As used in this Specification, the term “lot of material delivered to
the Work” shall mean a shipment of the water distribution materials as it is delivered to
the Work.

The Engineer shall have free access to all testing and records pertaining to material to
be delivered to the job site. The Engineer may elect to be present at any or all material
testing operations.

9-30.1 Pipe

All pipe shall be clearly marked with the manufacturer’s name, type, class, and thickness
as applicable. Lettering shall be legible and permanent under normal conditions of
handling and storage.

9-30.1(1) Ductile Iron Pipe

1. Ductile iron pipe shall meet the requirements of AWWA C151. Ductile iron pipe shall

have a cement mortar lining and a 1-mil thick seal coat meeting the requirements
of AWWA C104. Ductile iron pipe to be joined using bolted flanged joints shall be
Special Thickness Class 53. All other ductile iron pipe shall be Special Thickness Class
50, minimum Pressure Class 350, or the class indicated in the Plans or the Special
Provisions.

2. Nonrestrained joints shall be either rubber gasket type, push on type, or mechanical

type meeting the requirements of AWWA C111.

3. Restrained joints shall be as specified in

Section 9-30.2(6)

9-30.1(2) Polyethylene Encasement

Polyethylene encasement shall be tube-form high-density cross-laminated polyethylene
film or linear low-density polyethylene film meeting the requirements of ANSI/AWWA
C105. Color shall be natural or black.

9-30.1(3) Vacant

Water Distribution Materials

9-30

9-30.1(4) Steel Pipe

9-30.1(4)A

Steel Pipe (6 inches and Over)

Steel pipe 6 inches in diameter and larger shall conform to AWWA C200. The type of
protective coating and lining and other supplementary information required by AWWA
C200 shall be included in the Special Provisions.

9-30.1(4)B

Steel Pipe (4 inches and Under)

Steel pipe 4 inches in diameter and smaller shall be hot-dip galvanized inside and out and
meet the requirements of ASTM A53.

9-30.1(5) Polyvinyl Chloride (PVC)

9-30.1(5)A

Polyvinyl Chloride (PVC) Pipe (4 inches and Over)

PVC pipe for water mains shall meet the requirements of ANSI/AWWA C900 or ANSI/
AWWA C905. PVC pipe shall have the same outside dimensions as ductile iron pipe.
PVC pipe for distribution pipelines shall be a minimum of SDR 18. Pipe shall be listed by
Underwriters’ Laboratories, Inc.

PVC pipe shall be considered flexible conduit. Joints shall meet the requirements of ASTM
D3139 using a restrained rubber gasket conforming to ASTM F477. Solvent welded pipe
joints are not permitted.

9-30.1(5)B

Polyvinyl Chloride (PVC) Pipe (Under 4 inches)

Polyvinyl chloride (PVC) under 4 inches shall meet the requirements of ASTM D2241.
Pipe material shall be PVC 1120, PVC 1220, or PVC 2120, and shall have minimum wall
thickness equal or greater than a standard dimension ratio (SDR) of 21. Pipe shall bear
the National Sanitation Foundation Seal for use to transport potable water. Pipe shall be
considered flexible conduit. Joints shall meet the requirements of ASTM D3139 using a
restrained rubber gasket meeting the requirements of ASTM F477.

9-30.1(6) Polyethylene (PE) Pressure Pipe (4 inches and Over)

PE pressure pipe for water mains shall meet the requirements of ANSI/AWWA C906.
Pipe materials shall be high-density polyethylene PE 4710 conforming to a minimum cell
class 345464 C, D or E in accordance with ASTM D3350. Pipe diameter shall be either
iron pipe size in accordance with Table 3 and Table 4 of ANSI/AWWA C906. Pipe pressure
class shall be as listed in Table 5 of ANSI/AWWA C906 for DR 9 PE 4710 material.

Page 9-252

Water Distribution Materials

9-30.2 Fittings

Bolts, nuts, and washers used for securing fittings shall be of similar materials. Steel bolts
shall meet the requirements of ASTM A307 or ASTM F568 for carbon steel or ASTM
F593 or ASTM F738 for stainless steel. Nuts shall meet the requirements of ASTM A563
for carbon steel or ASTM F594 or ASTM F836 for stainless steel. Iron bolts and nuts shall
meet the requirements of ASTM A536, grade 65-45-12.

9-30.2(1) Ductile Iron Pipe

Fittings for ductile iron pipe shall meet the requirements of AWWA C110 or AWWA
C153. Joints shall meet the requirements of AWWA C111. Fittings shall be cement
mortar lined, meeting the requirements of AWWA C104. Gaskets for flat faced or raised
faced flanges shall be ⅛-inch-thick neoprene having a durometer of 60 plus or minus
5 or 1/16 cloth inserted. The type, material, and identification mark for bolts and nuts shall
be provided.

9-30.2(2) Vacant

9-30.2(3) Vacant

9-30.2(4) Steel Pipe

9-30.2(4)A

Steel Pipe (6 inches and Over)

Fittings for steel pipe 6 inches and larger shall be bell and spigot or welded to match the
pipe joints. Welded joints shall conform to AWWA C206. Field couplings shall be bolted,
sleeve-type for plain-end pipe conforming to AWWA C219. Expansion joints shall be
fabricated steel mechanical slip-type conforming to AWWA C221.

When flanges are required, they shall conform to AWWA C207. Linings and coatings for
fittings shall be the same as specified for the adjacent pipe.

9-30.2(4)B

Steel Pipe (4 inches and Under)

Fittings for steel pipe 4 inches and under shall be malleable iron threaded type with
a pressure rating of 150 psi. Dimensions shall meet the requirements of ANSI B16.3.
Threading shall meet the requirements of ANSI B2.1. Material shall meet requirements
of ASTM A47M, Grade 32510. Fittings shall be banded and hot-dip galvanized inside
and out.

9-30.2(5) Polyvinyl Chloride (PVC) Pipe

9-30.2(5)A

Polyvinyl Chloride (PVC) Pipe (4 inches and Over)

Fittings for PVC pipe shall be the same as specified for ductile iron pipe.

9-30.2(5)B

Polyvinyl Chloride (PVC) Pipe (Under 4 inches)

Fittings for PVC pipe under 4 inches shall meet the requirements of ASTM D2466.

Water Distribution Materials

9-30

9-30.2(6) Restrained Joints

The restraining of ductile iron pipe, fittings, and valves shall be accomplished by the use of
either a bolted or boltless system. Any device utilizing round point set screws shall not be
permitted.

All couplings installed underground to connect ductile iron or PVC pipe shall be
manufactured of ductile iron.

9-30.2(7) Bolted, Sleeve-Type Couplings for Plain End Pipe

Bolted, sleeve-type couplings, reducing or transition couplings, and flanged coupling
adapters used to join plain-end pipe shall meet the requirements of AWWA C219. Buried
couplings to connect ductile iron, gray cast iron, or PVC pipe shall be ductile iron. Buried
couplings for connecting steel pipe to steel pipe shall be steel.

9-30.2(8) Restrained Flexible Couplings

Restrained flexible couplings shall be locking type couplings in accordance with the Plans
or Special Provisions. Any couplings that utilize set screws tightened against the outside
pipe wall are not acceptable. Coupling shall be epoxy coated.

9-30.2(9) Grooved and Shouldered Joints

Grooved and shouldered joints shall conform to AWWA C606. Rigid or flexible grooved or
shouldered joints shall be as specified in the Special Provisions.

9-30.2(10) Polyethylene (PE) Pipe (4 inches and Over)

Fittings for PE pipe shall meet the requirement of ANSI/AWWA C906. Pipe material shall
be high-density polyethylene PE3408 conforming to minimum cell class 345464 C, D or
E per ASTM D3350. Pipe diameter shall be either iron pipe size per Table 3 and Table 5
of ANSI/AWWA C906 or ductile iron pipe size per Table 7 and Table 8 of ANSI/AWWA
C 906. Pipe pressure class shall be as listed in Table 9 of ANSI/AWWA C 906 for DR 9
PE3408 material.

9-30.2(11) Fabricated Steel Mechanical Slip-Type Expansion Joints

Fabricated steel mechanical slip-type expansion joints shall meet the requirements of
ANSI/AWWA C 221. Buried Expansion joints to connect ductile iron or PVC pipe shall be
ductile iron. Buried expansion joints for connecting steel pipe to steel pipe shall be steel.

Page 9-254

Water Distribution Materials

9-30.3 Valves

Valves shall be provided with hand wheels or operating nuts as designated. Where
operating nuts are called for, a standard 2-inch operating nut shall be furnished. Valves
shall be nonrising stem type, open counterclockwise, and be equipped with an O ring
stuffing box.

9-30.3(1) Gate Valves (3 to 16 inches)

Gate valves shall meet the requirements of AWWA C509 or AWWA C515. Gate valves
16 inches in size shall be arranged for operation in the horizontal position by enclosed
bevel gearing.

The Contractor shall provide an affidavit of compliance stating that the valve furnished
fully complies with AWWA C509 or AWWA C515.

9-30.3(2) Vacant

9-30.3(3) Butterfly Valves

Butterfly valves shall be rubber seated and shall meet the requirements of AWWA C504,
Class 150B. Butterfly valves shall be suitable for direct burial.

Valve operators shall be of the traveling nut or worm gear type, sealed, gasketed, and
permanently lubricated for underground service. Valve operators shall be constructed to
the standard of the valve manufacturer to withstand all anticipated operating torques and
designed to resist submergence in ground water.

The Contractor shall provide an affidavit of compliance stating that the valve furnished
fully complies with AWWA C504.

9-30.3(4) Valve Boxes

Valve boxes shall be installed on all buried valves. The box shall be of cast iron, two piece
slip type standard design with a base corresponding to the size of the valve. The box shall
be coal tar painted by the manufacturer using its standard. The cover shall have the word
“WATER” cast in it.

9-30.3(5) Valve Marker Posts

Posts shall have a 4-inch minimum square section and a minimum length of 42 inches,
with beveled edges and shall contain at least one No. 3 bar reinforcing steel.

The exposed portion of the marker posts shall be coated with two coats of concrete paint
in a color selected by the Contracting Agency.

The size of the valve and the distance in feet and inches to the valve shall be stenciled
on the face of the post, using black paint and a stencil which will produce letters
2 inches high.

Water Distribution Materials

9-30

9-30.3(6) Valve Stem Extensions

Valve stem extensions shall have a 2-inch-square operating nut and self-centering
rockplate support. Valves with an operating nut more than 4 feet below grade shall have a
valve stem extension to raise the operating nut to within 36 inches of the ground surface.

9-30.3(7) Combination Air Release/Air Vacuum Valves

Combination air release/air vacuum valves shall be designed to operate with potable
water under pressure to permit discharging a surge of air from an empty line when
filling and relieve the vacuum when draining the system. The valves shall also release an
accumulation of air when the system is under pressure. This shall be accomplished in a
single valve body designed to withstand 300 psi.

The body and cover shall be cast iron conforming to ASTM A48, Class 30. Floats shall be
stainless steel conforming to ASTM A240 and designed to withstand 1,000 psi. Seats shall
be Buna N rubber. Internal parts shall be stainless steel or bronze.

9-30.3(8) Tapping Sleeve and Valve Assembly

Tapping valves shall be furnished with flanged inlet end connections. The outlet ends
shall conform in dimensions to the AWWA Standards for hub or mechanical joint
connections, except that the outside of the hub shall have a large flange for attaching a
drilling machine. The seat opening of the valve must permit a diameter cut no less than
½ inch smaller than the valve size. Valves specifically designed for tapping meeting the
requirements of AWWA C500, and valves meeting the requirements of AWWA C509,
will be permitted. Tapping valves shall be of the same type as other valves on the project.
Tapping sleeves shall be cast iron, ductile iron, stainless steel, epoxy-coated steel, or other
approved material.

9-30.4 Vacant
9-30.5 Hydrants

Fire hydrants shall conform to AWWA C502 and shall be of standard manufacture and of
a pattern approved by the Contracting Agency.

9-30.5(1) End Connections

The end connections shall be mechanical joint or flanged, meeting the requirements of
AWWA C110 and C111.

Page 9-256

Water Distribution Materials

9-30.5(2) Hydrant Dimensions

Hydrant connection pipes shall be 6 inches inside diameter with 6-inch auxiliary gate
valves. Barrels shall have a 7-inch minimum inside diameter. Hydrant length, measured
from the bottom of the hydrant to the sidewalk ring, shall provide proper cover at each
installed location. Valve openings shall be 5¼ inches minimum diameter. Hydrants shall
have two 2½-inch hose nozzles and one pumper nozzle to match Contracting Agency’s
connection requirements.

Nozzles shall be fitted with cast iron threaded caps with operating nuts of the same
design and proportions as the hydrant stem nuts. Caps shall be threaded to fit the
corresponding nozzles and shall be fitted with suitable neoprene gaskets of positive water
tightness under test pressures. The direction of opening shall be counterclockwise and
shall be clearly marked on the operating nut or hydrant top. Hydrants shall be with O ring
stem seals. The hydrant shall be painted with two coats of paint to match the owner’s
existing hydrants.

9-30.5(3) Hydrant Extensions

Hydrant extensions shall have a 6¾-inch minimum inside diameter and shall be gray
cast iron or ductile iron and shall conform to the AWWA Standards for such castings.
The drillings of the connecting flanges on the extensions shall match the drillings of the
flanges on the hydrant.

Hydrant extensions shall also include the necessary hydrant operating stem extensions.

9-30.5(4) Hydrant Restraints

Shackle rods shall be ¾-inch diameter with threaded ends, and shall be ASTM A36 steel.
Shackle rods shall be coated with two coats of asphalt varnish. If a restrained joint system
is used, it shall meet the requirements of

Section 9-30.2(6)

9-30.5(5) Traffic Flange

Hydrants shall be provided with a traffic flange and shall be equipped with breaking
devices at the traffic flange which will allow the hydrant barrel to separate at this point
with a minimum breakage of hydrant parts in case of damage. There shall also be provided
at this point, a safety stem coupling on the operating stem that will shear at the time of
impact.

9-30.5(6) Guard Posts

Guard posts for hydrants shall be provided where shown in the Plans. Guard posts shall
be reinforced concrete having a compressive strength of 3,500 psi and shall be 6 feet
in length by 9 inches in diameter. Reinforcing shall consist of a minimum of five No. 3
deformed steel bars.

Water Distribution Materials

9-30

9-30.6

Water Service Connections (2 inches and Smaller)

9-30.6(1) Saddles

Saddles shall be ductile iron, bronze, brass, or stainless steel.

Saddles used for ¾- and 1-inch services shall be single strap and may be either AWWA
tapered thread or female iron pipe thread outlet. Saddles used for 1½- and 2-inch services
shall be double strap and shall be female iron pipe thread outlet. Saddles used on PVC
pipe shall be formed for PVC pipe and have flat, stainless steel straps.

9-30.6(2) Corporation Stops

Corporation stops shall be made of bronze or brass alloy.

Corporation stops for direct tapping shall have AWWA tapered thread inlet and an outlet
connections compatible with either copper or polyethylene tubing.

Corporation stops used with ¾- and 1-inch outlet saddles shall have either AWWA
tapered thread or male iron pipe thread inlets and outlet connections compatible
with either copper or polyethylene tubing. Thread patterns for the saddle outlet and
corporation stop inlet shall be the same.

Corporation stops used with 1½- and 2-inch outlet saddles shall have male iron pipe
thread inlets and outlet connections compatible to connecting service pipes or have male
iron pipe thread outlets.

9-30.6(3) Service Pipes

9-30.6(3)A

Copper Tubing

Copper pipe or tubing shall be annealed, seamless, and conform to the requirements of
ASTM B88, Type K rating.

9-30.6(3)B

Polyethylene Tubing

Polyethylene tubing shall meet the requirements of AWWA C901. Tubing shall be high
molecular mass with a 200 psi rating. Tubing used for ¾ and 1 inch shall be either SIDR 7
(iron pipe size) or SDR 9 (copper tube size). Tubing used for 1½ and 2 inches shall be SDR
9 (copper tube size).

9-30.6(3)C

PEX-a Tubing

PEX-a tubing shall be a minimum of 3/4 inch or a maximum 2-inch in diameter and shall be
manufactured in accordance with AWWA C904 and ASTM F876. The tubing shall have a
minimum materials designation code of 3306 in accordance with ASTM F876, a pressure
rating of 200 psi at 73.4 degrees using a design factor of 0.63 as outlined in PPI TR-3,
Part F-7, and shall have a minimum SDR of 9. Tubing color shall be blue in accordance
with APWA Uniform color standards.

Standard Specifications for Road, Bridge, and Municipal Construction 2020 (M 41-10) - page 54