5.8 Materials

1) Unless otherwise approved by the City Engineer, materials shall conform to the minimum requirements outlined herein and as shown on the Standard Details.

2) Acceptable materials shall be as outlined in these Design Standards.

3) It is not intended that materials listed herein are to be considered acceptable for all applications. The design engineer shall determine the materials suitable for the project to the satisfaction of the City Engineer.

4) All materials or products which will come in contact with or which will be used on material or products which will come in contact with potable water shall conform to the requirements of OAR 333-61-087, Product Acceptability Criteria or the National Sanitation Foundation (NSF) Standard 61, Drinking Water System Components - Health Effects as approved by the OHA-DWS.

1) All public waterlines 10-inches and larger, or waterlines located outside of City Limits, or any water mains located within an ODOT right-of-way (i.e. pipelines either parallel with R/W or crossing R/W) shall be ductile iron. Hydrant leads and the portion of fire service lines within the public right-of way shall also be ductile iron as specified below.

2) Public waterlines 8-inches & smaller, other than those meeting the criteria above, may be C900 PVC as specified below.

(a) Where ductile iron pipe is used for water distribution, pipe shall be Class 52 ductile iron pipe conforming to AWWA C-151, and cement-mortar lined and seal coated in accordance with AWWA C-104.

(b) All ductile iron pipe and fittings buried underground shall be coated on the outside with a standard coating of black bituminous paint a minimum of 1 mil thick unless otherwise specified.

(a) PVC pipe larger than 8-inches diameter is typically not allowed for public waterlines, and the information for other sizes is included herein for reference only.

(b) Where allowed under the criteria above, PVC pressure pipe 4-inches through 8-inches in diameter shall conform to the requirements of AWWA C-900 (design stress of 4000 psi), NSF approved, with cast iron pipe equivalent (CI) outside diameter dimensions. Pipe shall be PVC pipe with wall thickness equivalent to a standard dimension ratio (SDR) of 18, Pressure Class 235 (per C900-07).

(a) PVC pipe larger than 8-inches diameter is typically not allowed for public waterlines, and the information below is included herein for reference only.

(b) PVC pressure pipe 14-inches through 24-inches in diameter shall conform to the requirements of AWWA C-905 (design stress of 4000 psi), NSF approved, with cast iron pipe equivalent (CI) outside diameter dimensions. Pipe shall be PVC pipe with wall thickness equivalent to a standard dimension ratio (SDR) of 18, Pressure Class 235 (per C905-10).

a) As a minimum, MJ joints shall be provided with zinc plated tee bolts and nuts (low alloy steel conforming with AWWA C-111).

a) All flange joints shall be provided with bolts and nuts (low alloy steel conforming with AWWA C-111).

b) As a minimum, all nuts and bolts used for flanged joints shall conform to the requirements of ASME/ANSI B18.2.1 and shall be low carbon steel conforming to the requirements of ASTM A-307 Grade B, zinc plated steel.

a) For any areas where required by the Director, MJ and flanged joints shall be provided with bolts and nuts (low alloy steel conforming with AWWA C-111) coated with a zinc base coat and a Xylan fluoropolymer top coating (or approved equal) for corrosion control and to control thread friction torque during tightening (Romac R-Blue, TriPac 2000 Blue or approved equal).

a) All MJ tees, crosses, elbows, reducers, adapters, combinations thereof, and other miscellaneous fittings 4-inches through 24-inches in diameter shall be ductile iron compact fittings in conformance with AWWA C- 153.

b) The minimum working pressure for all MJ cast iron or ductile iron fittings 4-inches through 24-inch in diameter shall be 350 psi.

(1) Retainer gland casting bodies shall have all surfaces fusion bond powder coated (polyester or nylon based) after pretreatment with a phosphate wash, rinse & sealer coating (Mega-Bond or approved equal).

(2) Retainer gland set wedge bolts and set wedge assemblies shall have all surfaces coated with a minimum of two coats of fluoropolymer coating or approved equal coating (to control thread friction torque during tightening of set wedges).

(3) Retainer glands for use on MJ joints shall be "Mega-Lug" as manufactured by EBAA Iron Inc. (color coded based on the type of compatible pipe), or approved equal.

a) All flanged tees, crosses, elbows, reducers, adapters, combinations thereof, and other miscellaneous fittings 4-inches through 48-inches in diameter shall be ductile iron fittings in conformance with AWWAC-110.

b) The minimum working pressure for all flanged ductile iron fittings shall be 250 psi.

1) Couplings shall be limited in their application to connection of new pipe work to existing waterlines, temporary installations, and where specifically approved by the Director.

2) Mechanical joint couplings shall have minimum pressure ratings that will accommodate maximum pressures which will be experienced during hydrostatic and leakage testing.

3) Unrestrained Couplings. Unrestrained mechanical joint couplings and adapters shall be long-style solid sleeve type couplings consisting of a ductile iron sleeve, ductile iron follower rings, rubber gaskets, and corrosion-resistant bolts and hex nuts (zinc plated). Unrestrained solid sleeve couplings shall be Tyler Pipe, UFCO, Star, Sigma or approved equal.

4) Restrained Couplings. Unless otherwise specifically specified or noted on the drawings, restrained sleeve couplings up to 12-inch diameter shall be Alpha Wide Range Restrain Couplings by Romac, or approved equal, consisting of a two bolt coupling with all cast components (end rings, center ring, bolt guides, grippers) of ductile iron, NBR gaskets, stainless steel draw hook fasteners, stainless steel bolts & e-coated nuts.

5) Dresser type couplings are not an approved option unless specifically approved by the City Engineer. Applications shall be limited to transitions between pipe types for which mechanical joint couplings are not available.

a) All mainline valves and appurtenances shall have the name, monogram, or initials of the manufacturer cast thereon. They shall be built and equipped for the type of operation as specified herein or as shown on the drawings.

a) All valve operators shall be totally enclosed traveling nut type manual operators, sealed and lubricated for underground service.

b) All buried valves shall be supplied with a 2-inch square operating nut. Nuts shall have a flanged base on which shall be cast an arrow at least 2- inch long with the word "OPEN" cast on the nut to clearly indicate the direction of opening.

a) All buried valves shall be provided with valve boxes as shown on the Standard Details. All valve boxes shall be provided with VC212 self-centering valve box bases as manufactured by 3 Dimensional Contracting, or approved equal.

a) For criteria regarding acceptable location for use of gate valves, see Section 5.16.

b) All gate valves shall be resilient wedge gate valves conforming to the requirements of AWWA C-509, except as herein modified.

c) Gate valves shall be epoxy coated iron-body, resilient wedge non-rising stem gate valves. The wedge shall be cast iron completely encapsulated in a elastomer covering with polymer guide bearing caps on each side. The valves shall have a full diameter waterway with no grooves or recesses at the valve seat location. Flanges, where required, shall be 125 pound, full faced, drilled per ANSI B16.1.

d) Valves shall be tested and certified by the manufacturer for shut-off at a working pressure of 200 psi and a minimum test pressure of 300 psi.

e) Gate valves shall be Mueller A-2360, Waterous Series 500 or approved equal.

a) For criteria regarding acceptable location for use of butterfly valves, see Section 5.16.

b) All butterfly valves shall conform to AWWA C-504, except as herein modified.

c) Butterfly valves shall be epoxy coated short body type AWWA Type-B valves. Flanges, where required, shall be 125 pound, full faced, drilled per ANSI B16.l.

d) Valve operators shall be enclosed traveling nut type manual operators, sealed and lubricated for underground service, and shall be rated for submerged operation up to 10 psi (±23 feet).

e) Valves shall be tested and certified by the manufacturer for shut-off at a working pressure of 150 psi and a minimum test pressure of300 psi.

f) Butterfly valves shall be Pratt Groundhog series, or approved equal.

a) All valves shall be furnished with a fusion-bonded epoxy coating inside and outside conforming to the requirements of AWWA C-550.

1) For criteria regarding tapping requirements, see Section 5.19.

2) All services 1½-inch and smaller shall be saddle tapped as follows.

a) Service Saddles for PVC Pipe shall be hinged brass service saddles with brass strap clamp. Brass service saddles shall be Ford hinged S90 or approved equal.

b) Service Saddles for Ductile Iron Pipe shall be ductile iron service saddles with stainless steel bolts and double strap clamps. All ductile iron service saddles shall be furnished with a fusion bonded epoxy or nylon coating conforming to the requirements of AWWA C-550, saddles as follows, or approved equal.

(1) Smaller than 1½" services - Romac 101NS, Ford FCl0l

(2) 1½" services - Romac 202NS, Ford FC202

3) Unless otherwise required by the Director, single residential service pipe shall be a minimum of 1-inch in diameter.

4) Unless otherwise approved by the Director, commercial or industrial service pipe shall be a minimum of 1½-inches in diameter (reducers to be installed at meter location as applicable).

5) All service connections to HDPE service pipe shall be compression fittings, with 2-3/8" long inserts provided for all HDPE connections per manufacturer's recommendations (AY McDonald 6133T CTS insert stiffener or equal). All service connections to copper pipe shall be compression fittings.

a) Unless otherwise specified herein, water service lines shall be blue HDPE tubing (CTS, SDR 9, 200 psi rated) conforming to AWWA C901 (ASTM D2239 & D2737), with long style compression inserts and Q style compression fittings (Cencore or approved equal). All water services shall be continuous HDPE without splices.

b) All corporation stops shall be brass ball valve corporation stops rated to 300 psi with iron pipe thread inlet and compression outlet to adapt to HDPE copper tube size (CTS) pipe. Corporation stops shall be Ford F1100 or approved equal.

c) Each individual water service line shall be equipped with a full size locking ball valve meter stop assembly at the inlet to the meter. All meter stop assemblies shall be brass with copper pipe connector as appropriate and outlet for meter coupling.

d) Meter stops for 3/4-inch and 1-inch meters shall be 1-inch locking angle ball valves with compression inlet. 1-inchmeter stops shall be Ford KV43-444W-NL, or approved equal. Provide all services withal" x 3/4" adapter on the meter stop for each 1" service.

e) Where permitted, service line couplings shall be compression style couplings. Couplings (where approved by Public Works) shall be Ford C44-44Q coupling or approved equal, with long style compression inserts.

a) 1½-inch and 2-inch water service lines for shall be blue HDPE tubing (CTS, SDR 9, 200 psi rated) conforming to AWWA C901 (ASTM D2239 & D2737), with long style compression inserts and Q style compression fittings (Cencore or approved equal).

b) 1½-inch and 2-inch water services shall be provided with a bypass copper-setters for flanged meters, Ford locking bypass or approved equal conforming to standard details.

(1) The copper-setter shall be provided with ball valves on the inlet and outlet, with inlet valve provided with a lockwing and the outlet valve provided with a handle.

(2) The bypass line shall be 1-inch diameter minimum, and shall be provided with a lockwing ball valve.

c) 2-inch and larger services shall have a mainline tee with flanged side outlet and flange x MJ resilient wedge gate valve conforming the requirements specified herein.

a) 3-inch and larger water service lines shall be reviewed on a case-by-case basis. Pipe and fittings shall be as required by the City Engineer.

b) All services 3-inch and larger shall be Class 52 ductile iron pipe, with ductile iron fittings. Provide retainer glands on all MJ joints, and field lock type gaskets on all push-on joints.

c) 3-inch and larger services shall have a mainline tee with flanged side outlet and a flange x MJ resilient wedge gate valve conforming to the requirements specified herein.

d) The meter assembly shall include a lockable bypass and may require a backflow preventer if required by the City Engineer.

a) All fire services connected to building sprinkler systems shall have a double check detector assembly. The connection of the fire protection service to the public mainline shall be the "service connection" per SMC 13.12.050, and the entire portion of the fire protection service from the public mainline to the building shall be the sole responsibility of the property owner for maintenance and/or repair.

b) All fire service lines shall be reviewed on a case-by-case basis. Pipe and fittings shall be as required by the City Engineer.

c) The portion of all fire services within the public right-of-way or within utility easements to the City shall be Class 52 ductile iron pipe, with ductile iron fittings. Provide retainer glands on all MJ joints, and field-lock type gaskets on all push-on joints.

d) All fire service connections shall have a minimum 4-inch mainline tee (or tapping saddle) with flanged side outlet and a flange x MJ resilient wedge gate valve conforming to the requirements specified herein.

1) Per approved by the City Engineer.

2) Meter boxes outside of traffic areas shall be polymer concrete boxes with nonskid polymer concrete covers. Meter box lids shall not be provided with touch read knockouts or mouse holes.

3) All meter boxes shall be polymer concrete boxes with one piece traffic rated covers.

1) All fire hydrants shall conform to the following:

a) All fire hydrants shall be improved, dry barrel, 5¼-inch compression type valve, traffic model.

b) Fire hydrants shall be equipped with two 2½-inch hose ports (NST), one 4½-inch pumper port (NST) with Storz adapter as specified, 1½-inch pentagon nut, and barrel drains.

c) Fire hydrants shall be oriented so as to optimize access to ports, or as directed by the City Engineer.

d) Fire hydrants shall be Mueller Super Centurion Series 250, Model A-423, or Kennedy Guardian K81D, and shall be factory powder coated red.

e) All hydrants within a single project (including within all phases of a project) shall be of the same manufacturer.

1) Minimum allowable blowoff size shall be as outlined under Section 5.12. Blowoffs shall be sized to provide adequate flushing velocities as approved by the City Engineer.

2) Unless otherwise shown or authorized by the City Engineer, all blowoffs shall be provided with valve boxes and/or meter boxes as shown in the Standard Details.

1) Tapping tees used for making connections to existing, in-service lines shall be all stainless steel construction (including stainless steel flange) with full perimeter gasket, and shall have Class 125 outlet flanges. In all cases, the tapping tee shall be designed for use with the existing pipe materials and O.D. equivalent.

2) All tapping valves shall be resilient wedge gate valves furnished with a fusion bonded epoxy coating inside & outside conforming to the requirements of AWWAC-550.

3) Any company performing mainline taps shall be prequalified with the City prior to performing any work on a project.

4) Contractors shall coordinate all taps with City Public Works and perform work with Public Works with 72 hours’ notice.

1) Underground warning tape shall be detectable or non-detectable acid and alkali resistant safety warning tape. The tape shall consist of a minimum 4.0 mil (0.004") thick, virgin low density polyethylene plastic film formulated for extended use underground. The tape shall be in accordance with the APWA national color code and shall be permanently imprinted in lead free black pigments suitable for direct burial.

2) The tape shall be safety blue and shall be provided with the legend "CAUTION BURIED WATER LINE BELOW" or approved equivalent printed continuously down the length of the tape.

1) A continuous insulated 12 gauge solid core copper toning wire shall be supplied with all pipe. Insulation shall be blue in color for potable water piping.

2) For seams, a 3m grease cap or approved equal shall be used.

3) Additional wire shall be supplied as necessary to allow the toning wire to be looped up at all valve boxes on all lines.

4) Tone tests shall be conducted by the City after the curbs meter box and curb stop have been installed and prior to paving.

1) All concrete shall conform to the requirements of OSSC (ODOT/APWA) 00440, Commercial Grade Concrete, 3300 psi (5" slump or stiffer). Concrete mix design shall be submitted to the City for review and approval prior to use.

2) If hand mixed sack-crete type concrete is proposed, it shall be a 4000 psi minimum mix (approved by the City prior to use), mixed with the minimum amount of water necessary for workability (5" slump or stiffer).

3) In no case will dry sack-crete (either in bags or as loose mix) be considered as an acceptable substitute for an approved concrete mix, placed as specified herein or on the drawing details.

1) Carrier pipe used in bore casings shall meet the minimum specifications contained herein. Casing pipe shall be of a size to permit proper construction of the carrier pipe to the required lines and grades.

2) Casing shall be welded smooth steel pipe conforming to the requirements of ASTM A-53 or approved equal, with a minimum yield strength of 35,000 psi.

3) Minimum casing size and wall thickness shall as outlined below. Casing wall thickness shall conform to these requirements or the requirements of the agency having jurisdiction, whichever is more stringent. Contractor shall be responsible for verifying the bell OD or casing spacer diameter required of actual carrier pipe provided or bore grades specified, as bell diameters or casing spacer requirements may vary between manufacturers. Casing diameter shall be increased as required to allow trimming of casing spacers on grade critical bores, or where required to provide additional clearance between bells and casing. The fact that certain carrier pipe types are listed in this table does not indicate that such pipe type is approved for any particular application (i.e. to avoid repetition, this table applies to water, sewer and storm drainage as applicable).


Carrier Pipe Nominal Diameter (Inches)	Minimum¹ Casing Pipe Diameter (Inches)	Casing Wall Minimum Thickness (Inches)
<6"	10 OD/ 9.5" ID	0.250 (1/4)
6" DI (CL 52, push-in joint) (Bell OD = ±8.9")	12" OD / ±11.5" ID	0.25 (1/4)
6" PVC C900 (DR 18) (Bell OD= ±8.43")	12" OD / ±11.5" ID	0.25 (1/4)
6" PVC D3034 (DR 35) (Bell OD= ±7.0")	12" OD / ±11.5" ID (18" min. if slope :S 2%)	0.25 (1/4) 0.375 (3/8)
8" DI (CL 52, push-injoint) (Bell OD = ±11.2")	14" OD/ ±13.37" ID	0.312 (5/16)
8" PVC C900 (DR 18) (Bell OD= ±11.06")	14" OD/ ±13.37" ID	0.312 (5/16)
8" PVC D3034 (DR 35) (Bell OD =±9.36")	14" OD/ ±13.37" ID (20" min. if slope :S 2%)	0.312 (5/16) 0.375 (3/8)
10" DI (CL 52, push-in joint) (Bell OD =±13.25")	16" OD/ ±15.37" ID	0.312 (5/16)
10" PVC C900 (DR 18) (Bell OD =±13.57")	16" OD/ ±15.37" ID	0.312 (5/16)
10" PVC D3034 (DR35) (Bell OD= ±11.7")	16" OD/ ±15.37" ID (24" min. if slope :S 2%)	0.312 (5/16) 0.50 (1/2)
12" DI (CL 52, push-in joint) (Bell OD= ±15.37")	18" OD/ ±17.25" ID	0.375 (3/8)
12" PVC C900 (DR 18) (Bell OD= ±16.13")	18" OD/ ±17.25" ID	0.375 (3/8)
12" PVC D3034 (DR 35) (Bell OD =±13.94")	18" OD/ ±17.25" ID (24" min. if slope :S 2%)	0.375 (3/8) 0.50 (1/2)
14" DI (CL 52, push-in joint) (Bell OD= ±17.85")	22" OD I ±21" ID	0.50 (1/2)
14" PVC C900 (DR25) (Bell OD = ±17.94")	22" OD I ±21" ID	0.50 (1/2)
15" PVC D3034 (DR35) (Bell OD= ±17.05")	22" OD I ±21.2" ID (24" min. if slope :S 2%)	0.50 (1/2) 0.50 (1/2)
16" DI (CL 52, push-in joint) (Bell OD = ±20")	24" OD I ±23" ID	0.50 (1/2)
16" PVC C905 (DR25) (Bell OD= ±20.41")	24" OD I ±23" ID	0.50 (1/2)
18" DI (CL 52, push-in joint) (Bell OD = ±22.2")	26" OD I ±25" ID	0.50 (1/2) 0.50 (1/2)
18" PVC C905 (DR25) (Bell OD = ±22.87")	26" OD I ±25" ID	0.50 (1/2) 0.50 (1/2)
18" PVC F679 (PS46) (Bell OD = ±20.85")	24" OD I ±23" ID (28" min. if slope 2%)	0.50 (1/2)
20" DI (CL 52, push-in joint) (Bell OD = ±24.3")	28" OD I 27" ID	0.50 (1/2)
20" PVC C905 (DR 25) (Bell OD= ±25.34")	28" OD I 27" ID	0.50 (1/2)
21" PVC F679 (PS46) (Bell OD = ±24.58")	28" OD I 27" ID (30" min. if slope 2%)	0.50 (1/2)
24" DI (CL 52, push-in joint) (Bell OD = ±28.5")	32" OD I ±31" ID	0.50 (1/2)
24" PVC C905 (DR 25) (Bell OD = ±30.27")	34" OD I 33" ID	0.50 (1/2)
24" PVC F679 (PS46) (Bell OD= ±27.65")	32" OD I 31" ID (34" min. if slope 2%)	0.50 (1/2)
27" PVC F679 (PS46) (Bell OD= ±31.16")	36" OD I ±34.75 ID	0.625 (5/8)
30" DI (CL 52, push-in joint) (Bell OD = ±34.95")	38" OD I ±36.75" ID	0.625 (5/8)
30" PVC C905 (DR 25) (Bell OD= ±37.12")	42" OD I ±40.75" ID	0.625 (5/8)
30" PVC F679 (PS46) (Bell OD= ±35.61")	42" OD I ±40.75" ID (44" min. if slope 2%)	0.625 (5/8)
36" DI (CL 52, push-in joint) (Bell OD= ±41.4")	46" OD I ±44.75" ID	0.625 (5/8)
36" PVC C905 (DR25) (Bell OD= ±44.43")	48" OD I ±46.75" ID	0.625 (5/8)
36" PVC F679 (PS46) (Bell OD = ±42.82")	48" OD I ±46.75" ID (50" min. if slope 2%)	0.625 (5/8)
42" PVC F679 (PS46) (Bell OD= ±49.61")	54" OD I ±52.75" ID (56" min. if slope 2%)	0.75 (3/4)
48" DI (CL 52, push-in joint) (Bell OD= ±54.71")	60" OD I ±58.5" ID	0.75 (3/4)
48" PVC F679 (PS46) (Bell OD = ±56.62")	60" OD I ±58.5" ID (64" min. if slope 2%)	0.75 (3/4)

1Casing diameter shall be increased as required to allow trimming of casing spacers on grade critical bores.

4) The class of casing specified is based upon assumed superimposed loads and not upon the stresses resulting from jacking or boring operations. Any increase in casing strength to withstand jacking or boring operations shall be the responsibility of the Contractor.

a) Casing spacers shall be Model SSI-8 for carrier pipes up to 18 inch diameter and Model SSI-12-2 for larger pipe sizes as manufactured by APS (Advanced Products and Systems, Inc.) or approved equal.

b) Casing spacers shall be bolt-on style with a shell made of at least two halves. The band material shall be manufactured of a minimum 14 gauge T-304 stainless steel. The runners shall be at least 7 inches long for SSI-8 models and 11 inches long for SSI-12 models, and manufactured of high abrasion resistant and low co-efficient of friction, glass filled polymer.

c) The spacer shall have a flexible EPDM liner having a minimum thickness of 0.090 inches, with a hardness of durometer "A" 85-90. The liner shall have a rating of no less than 60,000 VPM and water absorption of 1% maximum. All welds are to be chemically passivated and all hardware to be stainless steel.

d) All spacers used for grade critical gravity sewer and storm lines shall have field replaceable runners to allow for grade and elevation adjustment.

e) A minimum of three (3) casing spacers per length of pipe shall be required, or 6-foot on center maximum spacing, whichever is greater.

a) Where casings are filled with sand (gravity or non-pressure pipelines), end seals shall be grout/masonry end caps with 4" minimum diameter sand feed and vent tubes at each end. The vent tubes shall be plugged with grout after the casing is filled with sand.

b) Where casings are not filled with sand (pressure pipelines), end seals shall be Model AC (pull-on) or Model AW (wrap-around with pressure sensitive butyl mastic strips) end seals as manufactured by APS, or approved equal, fastened to the casing and carrier pipe with stainless steel bands.