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 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
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
Specifications and Tech Notes
TN 1.01 Dual Wall HDPE Pipe Perforation Patterns
TN 2.01 Minimum Maximum Cover Heights for HDPE per AASHTO
TN 4.01 Chemical Resistance of Polyethylene and Elastomers
TN 5.02 Flowable Fill Backfill for Thermoplastic Pipe
TN 5.03 HDPE Pipe Repair Options
TN 5.04 HDPE and HP Storm Connections to Manholes and Structures
TN 5.10 Integral Bell Transition for HDPE Pipe
Additional Resources
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 End | Soil Tight (STIB) | Water Tight (WTIB) | ||
| Diameters Available | *4"-60" (100-1500 mm) | *4"-30" (100-750 mm) | 4"-60" (100-1500 mm) | |
| Lengths Available | 13', 20' (4, 6 m) | 13', 20' (4, 6 m) | 13', 20' (4, 6 m) | |
| Joint Performance | Soil Tight | Soil Tight | Water Tight (ASTM D3212) | |
| Joining System | External Coupler | Integral Bell & Gasketed Spigot | Water Tight Reinforced Integral Bell & Gasketed Spigot | |
| Specifications | AASHTO 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 Life | Minimum 100 Year | Minimum 100 Year | Minimum 100 Year | |