64 PLASTIC PIPE
64-1 General
64-1.01 General
64-1.01A Summary
Section 64 -1 includes general specifications for fabricating and installing plastic pipe.
64-1.01B Definitions
Reserved
64-1.01C Submittals
Submit a certificate of compliance for plastic pipe, including the average pipe stiffness, resin material cell classification and date of manufacture.
64-1.01D Quality Assurance
Reserved
64-1.02 Materials
Not Used
64-1.03 Construction
Not Used
64-1.04 Payment
Not Used
64-2 Plastic Pipe
64-2.01 General
64-2.01A Summary
Section 64-2 includes specifications for fabricating and installing plastic pipe . Installing plastic pipe includes excavation, backfill, connection of new pipe to new or existing facilities, reinforcement , concrete collars or tees, and other connecting devices.
64-2.01B Definitions
Reserved
64-2.01C Submittals
For corrugated polyethylene pipe, submit the manufacturer's copy of plant audits and test results from the National Transportation Product Evaluat ion Program for the current cycle of testing for each pipe diameter furnished. If recycled resin is used for corrugated polyethylene pipe, submit the percent of recycled resin.
64-2.01D Quality Assurance
Reserved
64-2.02 Materials
64-2.02A General
Plastic pipe must be Type C or Type S corrugated polyethylene pipe, corrugated PVC pipe with smooth interior, or polypropylene dual wall pipe. The residue from the ignition of polyethylene, PVC, and polypropylene compounds must not exceed 30 percen t as determined under ASTM D2584 except the muffle furnace temperature must be 840 ± 45 degrees F. Pipes and fittings must be homogenous throughout and uniform in color, opacity, density, and other properties. The inside and outside surfaces must be semima tte or glossy in appearance and free of chalky, sticky, or tacky material. The pipe walls must be free of cracks, holes, blisters, voids, foreign inclusions, or other defects affecting the pipe wall integrity or visible to the naked eye. Do not use pipes o r SECTION 64 PLASTIC PIPE fittings with abrasions or scratches deeper than 10 percent of the wall thickness. The joint surfaces where the gaskets bear must be smooth and free of imperfections, ridges, fractures, or cracks that could adversely affect the joint seal. Store pipes in unit packages and protect the bell end of the pipes from damage. Support unit packages with racks or dunnage to prevent damage and bending. If unit packages are stacked, do not allow the weight of the upper units to cause deformation to the pipes in the l ower units. Do not store pipes adjacent to heat sources. Do not allow pipes to overhang vehicles or storage areas unsupported by more than 3 feet. Cover pipes to provide temporary sun block protection. Provide adequate air circulation around the covered pi pes to reduce excessive heat accumulation. Protect gaskets from exposure to weather, heat, ozone, oil, grease, and sunlight for any time period exceeding 48 hours. Do not store gaskets near electrical or exhaust heat sources. The Department rejects pipes w ith cracked or split gaskets. Protect pipes and fittings from damage when handling and installing.
64-2.02B Backfill
Structure backfill material for plastic pipe must comply with section 19 -3 except the gradation of structure backfill must comply with the following table: Gradation of Structure Backfill for Plastic Pipe Sieve size Percentage passing 1-1/2" 100 No. 4 25–70 No. 50 5-20 No. 200 0-5 Controlled low -strength material and slurry cement backfill must comply with section 19 -3.
64-2.02C Corrugated Polyethylene Pipe
Corrugated polyethylene pipe must be 60 inches or less in nominal diameter. Type C and Type S corrugated polyethylene pipe must comply with AASHTO M 294. HDPE compounds used in the manufacture of corrugated polyethyle ne pipe and fittings must comply with AASHTO M 294 except the mix must contain from 2 to 4 percent well -dispersed carbon black and at least 49 percent virgin resin . The corrugated polyethylene pipe manufacturer must:
1.Participate in the National Transpor tation Product Evaluation Program for each plant supplying corrugated polyethylene pipe and fittings for the project
2.Conduct and maintain a quality control program under National Transportation Product Evaluation Program
64-2.02D Corrugated PVC Pipe with Smooth Interior
Corrugated PVC pipe must have smooth interior and be manufactured as a single extrusion. The corrugated exterior profile must be annular and seamless. The pipe dimensions, wall thickness, socket sizes, and fitting tolerances must comply with ASTM F949. The minimum stiffness of corrugated PVC pipe must be 46 psi when tested under ASTM D2412. Corrugated PVC pipe and fittings must be manufactured from PVC virgin compounds, except clean, reworked, recycled PVC materials generated from the manufacturer's pipe or fitting fabrication may be reused. Corrugated PVC pipe must comply with ASTM F949 for cell classification 12454 under ASTM D1784. Fillers that lower the tensile strength of the compound or change the minimum cell classification a re not SECTION 64 PLASTIC PIPE allowed. PVC compounds must contain at least 0.5 percent by weight rutile titanium dioxide or the quantity recommended by the pipe manufacturer. The chemical resistance of corrugated PVC pipe and fittings must comply with ASTM D5260 for cell classif ication S47552. The manufacturer's code must include the day, month, year, shift, and plant of manufacture. Do not expose pipes to direct sunlight for more than 30 days.
64-2.02E Polypropylene Dual Wall Pipe
Polypropylene dual wall pipe and fittings must have a smooth interior wall and annular exterior corrugations complying with ASTM F2881. Polypropylene dual wall pipe must not exceed 60 inches in nominal diameter. Polypropylene compound for pipe and fitting production must be impact modified copolymer ma terials and meet the requirements of ASTM F2881. Pipe and fittings must be manufactured from virgin compounds. Reworked plastic may be used if it meets the requirements for rework plastic conforming to ASTM F2881. Pipe must be colored or black. Carbon blac k content must be from 2 to 3 percent by weight for black pipe. Add UV stabilizers for colored pipe under the manufacturer 's instructions. Gaskets must be elastomeric and comply with ASTM F477. No reworked material will be allowed in the manufacture of the gasket. Gasket must be covered with a removable, protective wrap to ensure the gasket is free from debris. All pipes and fittings must be clearly marked with:
1.Manufacturer 's name or trademark
2.Nominal size
3.Specification designation
4.Plant locati on or designation code
5.Date of manufacture Pipe must be marked at intervals of not more than 12 feet. Store pipe and fittings above ground on adequate blocking. Pipe must be kept clean and fully drained during storage. Pipe, fittings, and gaskets must be covered or wrapped if exposed to sunlight during storage.
64-2.02F Joints
Plastic pipe joints must comply with section 61 -2.01D(2)( c) for standard or positive joints. Where sleeve joint connections are used, the sleeve width must be at least 7 -3/4 inch es and engage at least 2 corrugations of each pipe being joined. Joints for pipes shown as watertight must be watertight under pressure and all conditions of expansion, contraction, and settlement, and must comply with section 61 -2.01D(2)( b) for watertight ness. For corrugated polyethylene pipe:
1.If watertight joints are shown, use Type S corrugated polyethylene pipe with gaskets. If watertight joints are not shown, use gasketed joints when specified. Gaskets for Type C corrugated polyethylene pipe must be installed on each side of the joint. Gaskets must comply with ASTM F477 and be factory -installed.
2.Corrugated polyethylene pipe joints manufactured to comply with section 61 -2.01D(2)( c) for integral joints must be laid to line and grade with sect ions closely jointed. Corrugated polyethylene pipe to be joined by sleeve joints must be laid to line and grade with the separate sections not more than 1 -1/2 inches apart and then firmly joined together with at least 2 corrugations from each pipe section engaged in the coupler. For corrugated PVC pipe with smooth interior: SECTION 64 PLASTIC PIPE
1.Elastomeric gaskets must comply with ASTM F477 for low -head applications. Use extruded or molded gaskets cured in a way so that any cross section will be dense, homogeneous, and free of pores, blisters, pitting or other imperfections. Double gaskets must be single -piece gaskets that fit into the first 2 full corrugation valleys on the spigot end. Ship gaskets in containers that will prevent damage from UV exposure and handling.
2.Wyes, tees, reducers, elbows, couplings, laterals, and other fittings must be molded or fabricated under ASTM F949 for cell classification 12454 or 13343 as specified in ASTM D1784.
3.Lubricant must comply with the pipe manufacturer's instructions. The lubri cant must not have a detrimental effect on gaskets or pipes.
4.Joints must comply with section 61 -2.01D(2)( c) for integral joints except the joint overlap requirements are as shown. Pipe joints must be bell and spigot type with gaskets ready for field assembly. Install joints so that the elastomeric gasket will be compressed radially between the pipe bell and spigot to form a tight seal when assembled. For polypropylene dual wall pipe:
1.All joints must be watertight unless otherwise described
2.Joints must comply with ASTM D3212 and be bell and spigot type unless alternative connections are shown
3.Gaskets must be installed at all joints
4.Lubricant used for the assembly of the gasketed joint must be as recommended by the pipe manufacturer with no det rimental effect on the gasket or pipe
5.Install joints so that the elastomeric gasket will be compressed radially between the pipe bell and spigot to form a tight seal when assembled
64-2.02G 64-2.02H Reserved
64-2.03 Construction
64-2.03A General
Install Type C corrugated polyethylene pipe wherever corrugated interior wall type is shown. Install Type S corrugated polyethylene pipe, corrugated PVC pipe, or polypropylene dual wall pipe wherever smooth interior wall type is shown. You may install corruga ted or smooth interior wall pipe if the type of plastic pipe is not shown. For PVC pipe, whenever the atmospheric temperature is forecast to be 40 degrees F or less, demonstrate to the Engineer that the bar and block method or any other mechanical assistan ce method for assembling the pipes will not damage the pipes before proceeding with pipe assembly.
64-2.03B Earthwork
Excavation, backfill, and shaped bedding must comply with section 19 -3 except:
1.Where saturated clay, peat, or other unsuitable material is encountered immediately adjacent to the pipe trench, remove the material to a distance at least equal to the pipe diameter on each side of the pipe if compacted backfill is to be placed or a distance at least equal to 1/4 the pipe di ameter, but not less than 6 inches, on each side of the pipe if slurry cement or controlled low -strength material is to be placed.
2.Backfill corrugated polyethylene pipe or polypropylene dual wall pipe greater than 48 inches in nominal diameter with eith er controlled low -strength material under section 19 -3.02G or with slurry cement backfill under section 19 -3.02E.
3.Place controlled low -strength material used for structure backfill to a level at least 12 inches or 0.7 times the pipe diameter above the p ipe crown , whichever is greater . Lay plastic pipe in a trench excavated to the established lines and grades. Grade and prepare the bottom of the trench as shown throughout the entire length of the pipe. Removing unsuitable material and replacing it with s uitable material is change order work.
64-2.03C Pipe Placement
Provide the necessary facilities for lowering and properly placing pipe sections in the trench. SECTION 64 PLASTIC PIPE Lay plastic pipe to line and grade with sections closely jointed. Do not let the pipe trench flo od before backfilling. Construct concrete collars or tee connections with minor concrete whenever concrete collars or tee connections are required to connect new plastic pipe to existing or new pipe. Reinforcement for concrete collars and tees must comply with section 52. For corrugated PVC pipe with smooth interior:
1.Install gaskets on pipe spigots after the pipe is placed into the trench and ready for joint connection. Place the gasket on the spigot end under the pipe manufacturer's installation instruc tions. The leading edge of the gasket must point toward the spigot end whenever a double gasket is used. Both the spigot and bell ends must be free of debris before connection. Apply the pipe manufacturer's recommended lubricant to the inside of the bell a nd over the gasket. Insert the spigot end of the pipe into the bell end until the factory provided insertion line on the spigot end lines up with the bell edge.
2.Whenever the spigot end of a pipe is shortened, cut the end square and bevel it to the same angle as provided on the factory -finished spigot end so that burrs are not visible. Re -mark the shortened pipe with a new insertion line on the spigot using a factory -marked spigot insertion line as a guide.
3.Cover the ends of installed corrugated PVC pi pe that were not backfilled after installation at the end of each day.
4.Pipes must not exhibit deflection in excess of 5 percent of the original inside diameter at any location after being backfilled to at least 5 feet above the top of the pipe or to the completed grade, whichever is less. Place polypropylene dual wall pipe under the manufacturer's instructions except corrugated couplings must be split collar, engaging at least 2 full corrugations when non -watertight joints are allowed. Shortening pipe s ections in the field must comply with the manufacturer's instructions.
64-2.04 Payment
The payment quantity for plastic pipe:
1.Is the length designated by the Engineer
2.Is measured along the centerline of the pipe and parallel with the slope line
2.Includes the length of pipe elbows, wyes, tees, and other branches to the point of intersection
3.Is the length of pipe necessary to be placed before cutting, measured in 2 -foot increments, if the pipe is cut to fit a structure or slope
64-3 Slotted Plas Tic Pipe
64-3.01 General
64-3.01A Summary
Section 64 -3 includes specifications for constructing slotted plastic pipe . Slotted plastic pipe includes structure excavation, concrete backfill, connecting new pipe to new or existing facilities, concrete collars, reinforcement, and other connecting devices.
64-3.01B Definitions
Reserved
64-3.01C Submittals
If an or equal slotted plastic pipe is being considered, it must be submitted 30 days before installation for approval. If RSC is used for concrete backfill for slotted plastic pipe, submit the concrete mix design and test data from an authorized laboratory 10 days before excavating the pipe trench. The laboratory must spe cify the cure time required for the concrete mix to attain 2,000 psi compressive strength when tested under California Test 521. Heel-resistant grates if specified must be submitted 30 days before installation for approval. Anchorage details must be includ ed in the submittal. SECTION 64 PLASTIC PIPE
64-3.01D Quality Assurance
Reserved
64-3.02 Materials
64-3.02A General
Reserved
64-3.02B Slotted Plastic Pipes
Slotted plastic pipe must be one of the following or equal: Slotted Plastic Pipe 12" diameter 18" diameter Zurn Z888 -12 Zurn Z888 -18 ACO Qmax 350 ACO Qmax 365 ADS Duraslot -12 ADS Duraslot -18
64-3.02C Concrete Backfill
Concrete for concrete backfill for slotted plastic pipe must comply with the specifications for minor concrete. You may use RSC instead of minor concrete for concrete backfill. If RSC is used for concrete backfill, the RSC must:
1.Contain at least 590 pou nds of cementitious material per cubic yard
2.Comply with section 90 -3.02A, except section 90 -1 does not apply
3.Comply with section 90 -2
64-3.02D Heel -Resistant Grates
Heel-resistant grate must:
1.Be designed to carry traffic loadings
2.Comply with ADA requirements
3.Be constructed of steel or cast iron
4.Be provided by the same manufacturer of the slotted plastic pipe
5.Comply with the manufacturer's instructions
64-3.02E Bar Reinforcement
Bar reinforcement must compl y with ASTM A615/A615M, Gra de 60 or ASTM A706/A706M, Grade 60.
64-3.02F Miscellaneous Metal
Ductile iron, nuts, bolts, and washers must comply with section 75.
64-3.02G Grout
Grout must be non -shrink grout complying with ASTM C1107/C1107M.
64-3.02H Curing Compound
Non-pigmented c uring compound must comply with ASTM C309, Type 1, Class B.
64-3.02I End Caps
End cap must:
1.Be provided by the same manufacturer of the slotted plastic pipe
2.Prevent concrete backfill from entering the pipe
64-3.03 Construction
64-3.03A General
Cover the grate slots with heavy -duty tape or other authorized covering during paving and concrete backfilling activities to prevent material from entering the slots. SECTION 64 PLASTIC PIPE
64-3.03B Preparation
Pave adjacent traffic lanes before installing slotted plast ic pipes. Excavation must comply with section 19 -3.
64-3.03C Installation
Lay and join slotted plastic pipes under the pipe manufacturer 's instructions. Lay pipes to line and grade with sections closely jointed and adequately secured to prevent separation during placement of the concrete backfill. If the pipes do not have a positive interlocking mechanism like a slot and tongue connection, secure the sections together with nuts, bolts, and washers before backfilling. The top of slotted plastic pi pes must not extend above the completed surface. Position the pipes so that the concrete backfill is flush with the surrounding grade and above the top of the grate from 1/8 to 1/4 inch. Place channels with the male and female ends facing each other. Place lateral support bar reinforcement on both sides of the grate slots. The support bar reinforcement must r un the full length of the slots. Anchor heel -resistant grates to the concrete backfill under the manufacturer 's instructions .
64-3.03D Concrete Backfi ll
Wherever minor concrete is used for concrete backfill for slotted plastic pipe, do not allow traffic on top of the backfill within 7 days of placement . Wherever RSC is used for concrete backfill for slotted plastic pipe, do not allow traffic on top of t he backfill before the required cure time of 2,000 psi is achieved. Place concrete backfill where shown. Consolidate the concrete backfill with high -frequency internal vibrators. Texture th e concrete backfill surface with a broom or burlap drag to produce a durable skid -resistant surface. Apply a non -pigmented curing c ompound to the exposed concrete backfill surface whenever the atmospheric temperature is 90 degrees F or greater after placement.
64-3.03E Transition Fittings
Use transition fittings to conne ct slotted plastic pipes to drainage inlet s. The transition fittings must be supplied by the same pipe manufacturer. Where welds are required in transition fittings, welds must comply with the pip e manufacturer's instructions. The completed welds must not have visible pinholes. Fill the gap s around the pipe s in the inlet structure wall with non -shrink grout where the pipes connect to an existing drainage structure. Install the grout under the pipe manufacturer's instructions. Cut the pipe s as shown after the grout used to seal the transition fitting has cured for at least 24 hours.
64-3.04 Payment
Slotted plastic pipe is measured along the centerline of the pipe and parallel with the slope line. If the pipe is cut to fit a structure or slope , the payment quantity is the length of pipe necessary to be placed before cutting, measured in 2 -foot increments.
64-4 64-10 Reserved
Source: California Standard Specifications, 2024 Edition. Pages 965–972 of 1,372.