N-12® Dual Wall Pipe

The Dual Wall N-12 pipe, with its smooth interior wall and corrugated exterior, offers exceptional hydraulics and strength. Built using application-specific high-density polyethylene, Dual Wall N-12 corrugated pipe also provides superior corrosion and abrasion resistance. This makes it an excellent alternative to reinforced concrete (RCP) and corrugated metal pipe (CMP).

N-12 ST ASTM Full Pipe

N-12 ST ASTM Full Pipe

N-12 Slipline

N-12 Slipline

N-12 WT ASTM

N-12 WT ASTM

N-12 ST ASTM

N-12 ST ASTM

N-12 Cold Weather Installation backfill

N-12 Cold Weather Installation backfill

N-12 WT AASHTO

N-12 WT AASHTO

Canton MI N-12 Installation

Canton MI N-12 Installation

N-12 Plain End Stick

N-12 Plain End Stick

Small Diameter N-12 Pipe

Small Diameter N-12 Pipe

N-12 ST AASHTO

N-12 ST AASHTO

N-12 Slipline

N-12 Slipline

N-12 WT AASHTO Bell and Spigot

N-12 WT AASHTO Bell and Spigot

N-12 ST ASTM Full Pipe
N-12 Slipline
N-12 WT ASTM
N-12 ST ASTM
N-12 Cold Weather Installation backfill
N-12 WT AASHTO
Canton MI N-12 Installation
N-12 Plain End Stick
Small Diameter N-12 Pipe
N-12 ST AASHTO
N-12 Slipline
N-12 WT AASHTO Bell and Spigot

Documentation

Standard Details / Drawings

101 Trench Installation (N-12 per AASHTO) Detail

101A Trench Installation (ASTM F2648) Detail

101B Trench Installation (Geotextile Wrap) Detail

101C Trench Installation (Perf Pipe) Detail

101G Trench Installation (Flowable Fill) Detail

101I Inserta Tee (HDPE) Detail

103 Parallel Pipe Installation Detail

106A French Drain Detail (Perf HDPE)

107A Railway Trench Installation Detail (HDPE)

107C Railway Trench Installation Detail (HDPE or PP)

111A Minimum Cover Temporary Single Axle HDPE Pipe Detail

111B Minimum Cover Temporary Tandem Axle HDPE Pipe Detail

111C Minimum Cover Temporary Tracked Axle HDPE Pipe Detail

113 HDPE & PP Connection to Concrete Headwall Detail

12"-60" HDPE per AASHTO Resin Properties Detail

1201 Green Layout Installation (Perf HDPE) Detail

1205 USGA Sand Green Profile (Perf HDPE) Detail

1207 USGA Tee Profile (Perf HDPE) Detail

1210 USGA Bunker Drainage Profile Grass (Perf HDPE) Detail

201 Structure Connection Installation Detail

202A Connection Soil-Tight MH Nyloplast Adapt 12-24in HDPE Detail

203 Connection MH Grouted Waterstop 12-60in HDPE Detail

204B 12-42 HDPE N-12 Booted (Cored or Cast Hole) Structure Connection Detail

204C 12-30 HDPE N-12 Compression (Cast-in) Structure Connection with PVC Adapter Detail

204D 12-36 HDPE N-12 Z-LOK Booted (Cast-in) Structure Connection Detail

204E 12-60 HDPE N-12 Booted (Cored or Cast Hole) Structure Connection with Corr Pipe Adapter Gasket Detail

204F 12-30 HDPE N-12 Booted (Cast-in) Structure Connection with Corr Pipe Adapter Gasket Detail

302 Mitered End Installation Detail

404 Installation HDPE Riser Tee 12-24in Detail

405 Installation HDPE Riser Tee 30-60in Detail

602 HDPE to CMP Connection (MarMac) Detail

603 HDPE to RCP Connection (Geotextile Wrap) Detail

604 HDPE to RCP Connection (MarMac) Detail

608 HDPE to HDPE Connection (MarMac) Detail

609 HDPE Plain End to RCP Plain End Connection (MarMac) Detail

804 Concrete Anchors Steeply Sloped Pipe Installation Detail

HDPE Dual Wall Couplers Fittings Manual

HDPE Dual Wall End Caps & Plugs Fittings Manual

HDPE Dual Wall Fabricated Bends Fittings Manual

HDPE Dual Wall Fabricated Reducers Fittings Manual

HDPE Dual Wall Fabricated Tees Fittings Manual

HDPE Dual Wall Fabricated Wyes Fittings Manual

HDPE Dual Wall Injection Molded Fittings Manual

HDPE Dual Wall Manifolds Fittings Manual

HDPE Dual Wall Miscellaneous Fittings Manual

HDPE Fittings Manual

SB2 Pipe Trench Installation Detail

Additional Resources

Introducing The Pipe Value Tool
Create reports to calculate and compare total installed cost differences between ADS dual wall pipe products and the competition.
Pipe Installation Instructions
From N-12 to HP Storm to MegaGreen, we have you covered with installation guidelines.
ADS Drainage Handbook
Are you an engineer looking for specifications? Our drainage handbook has 331 pages of detailed information about our products.
Water Management Catalog
Our Water Management Catalog includes 109 pages of detailed information about all of our products.
ADS HDPE Fittings Manual
Review our HDPE Fittings Manual. There are 204 pages that offer product information and specifications.

Overview

N-12 pipe is available in soil tight (ST), water tight (WT) and plain end, all of which offer joint options of bell and spigot design, gasket, bell wrap or pressure-rated 10.8 psi coupler. It's available with multiple joining systems, and provides corrugated-pipe strength and smooth interior wall hydraulics for increased flow capacity, in a lifetime package.

Features and Benefits

  • Smooth interior with a Manning's value of 0.012 resulting in increased flow capacity
  • Inert HDPE material is resistant to the effects of chemicals, abrasion, hot soils, and effluent
  • Lightweight product for best-installed cost and maximizing delivery and installation efficiencies
  • Structurally designed corrugated exterior to support typical construction and long term loading
  • Readily available in convenient locations to service local projects
  • Joint options to meet your application performance requirements, including up to water-tight joints meeting ASTM D3212
  • Available in ST, WT and Plain End
  • Joint options include bell and spigot design, gasket, bell wrap or pressure-rated 10.8 psi coupler

Lubricants

  • Soft, paste like compound
  • High performance pipe joint lubricant
  • NSF certified for potable water pipelines
  • Contains no petroleum-Will not swell gaskets
  • Stable from -10 to 120°F
  • Non-toxic
  • No objectionable odor
  • Will not support bacteria
  • Effect on gaskets-less than 1% weight gain and less than 1 duro hardness loss
  • Effectively lubricates pipe and pipe gaskets for safe and efficient assembly Ask your sales representative for more information on these and other ADS products.

 

Build America, Buy America (BABA) Act
These products, manufactured in accordance with AASHTO M252, AASHTO M294 or ASTM F2306, complies with the requirements in the Build America, Buy America (BABA) Act.

  • N-12 Per AASHTO
  • N-12 WT Series 35
  • N-12 Low Head

Product Specifications

N-12 Dual Wall
 Plain EndSoil Tight (STIB)Water Tight (WTIB)
Diameters Available*4"-60" (100-1500 mm)*4"-30" (100-750 mm)4"-60" (100-1500 mm)
Lengths Available13', 20' (4, 6 m)13', 20' (4, 6 m)13', 20' (4, 6 m)
Joint PerformanceSoil TightSoil TightWater Tight (ASTM D3212)
Joining SystemExternal CouplerIntegral Bell & Gasketed SpigotWater Tight Reinforced Integral Bell & Gasketed Spigot
SpecificationsAASHTO M252 4"-10" (100-250 mm)
AASHTO 294 12"-60" (300-1500 mm)
AASHTO M252 4"-10" (100-250 mm)
AASHTO M294 12"-30" (300-750 mm)
ASTM F2306 12"-30" (300-750 mm)
AASHTO M252 4"-10" inch (100-250 mm)
AASHTO 294 12"-60" (300-1500 mm)
ASTM F2306 12"-60" (300-1500 mm)
Design Service LifeMinimum 100 YearMinimum 100 YearMinimum 100 Year
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