Hancor High Density
Polyethylene Pipe

Reinforced
Concrete Pipe

Corrugated
Metal Pipe

PVC
Pipe

Specifications

AASHTO M252

ASTM F405

AASHTO M294

ASTM F667

ASTM F2306

CPPA 100

Standard Spec

ASTM C76

AASHTO M17

ASTM A760

AASHTO M36

ASTM F794

ASTM F679

ASTM F949

ASTM D1785

AASHTO M304

ASTM F794

Joints

Soil-tight and Water-tight capabilities

Fewer joints than concrete for equivalent lengths

Gaskets available

May require steel joint rings for watertightness

External bolted bands required

Joints are either bell/spigot, gasketed integral bell or sleeve

Durability

Excellent chemical and abrasion resistance

HDPE or PVC linings used to enhance service life, and/or reduce abrasion

Susceptible to corrosion from road salts and chemicals

Special coatings and/or increased steel thicknesses can be used to enhance service life

Chemical resistance lower than HDPE

Less abrasion resistant than HDPE

Reduced impact resistance in cold temperatures

Fillers reduce some durability properties

Hydraulics

Typical Manning's "n" design values of not less than .012 for smooth interior product

Typical Manning's "n" design values of .013 (Published test values as low as .010)

Typical Manning's "n" design values of .024 (Published test values as low as .011)

Typical Manning's "n" value of .009

Structural

Capable of traffic loads (HS-25) at 1 foot of min. cover for 4"-48" pipe and 2 foot min. cover for 54"-60" pipe

Standard product capable of 40 foot or deeper burial applications

Standard strength classes available

Spigot reinforcing may be required to prevent joint shear

Standard gauge thickness available

Pipe stiffness varies

Diameters

4" - 60"

8" - 144" (Some smaller diameters have no reinforcement)

4" - 144"

1/8" - 48"