N-12® Dual Wall - HDPE Pipe

Corrugated, smooth interior, high-density polyethylene (HDPE) pipe

Introduced in 1987, 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 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.

Features

  • 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:

ADS' 0201LU 2 lb. tub and 0801LU 8 lb. tub lubricant products for gasketed pipe joints:

  • 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.

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Product Information

ADS Dual Wall N-12 drainage pipe, available with multiple joining systems, provides corrugated-pipe strength and smooth interior wall hydraulics for increased flow capacity, in a lifetime package.

N-12 Dual Wall Specifications

Plain End Soil Tight (STIB) Water Tight (WTIB)
Diameters Available *4-60 inch (100-1500 mm) *4-60 inch (100-1500 mm) *4-60 inch (100-1500 mm)
Lengths Available 13, 20 feet (4, 6 m) 13, 20 feet (4, 6 m) 13, 20 feet (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 inch) (100-250 mm) AASHTO M252 (4-10 inch) (100-250 mm) AASHTO M252 (4-10 inch) (100-250 mm)
AASHTO M294 (12-60 inch) (300-1500 mm) AASHTO M294 (12-60 inch) (300-1500 mm) AASHTO M294 (12-60 inch) (300-1500 mm)
ASTM F2306 (12-60 inch) (300-1500 mm) ASTM F2306 (12-60 inch) (300-1500 mm) ASTM F2306 (12-60 inch) (300-1500 mm)
Design Service Life Minimum 100 Year Minimum 100 Year Minimum 100 Year

* 4" - 10" (100 - 254 mm) N-12 ST and WT available in limited areas.

Downloads

Submittal Packages

Installation_Culvert_Mitered_End_(Detail_302_02-16)-Model
Specification_ADS_N-12_ST_IB_PIPE_(ASTM_F2648)_4in_to_60in_2017
Installation_Culvert_Mitered_End_Section_(Product_Detail_301_02-16)-Model
Installation_French_Drain_Perforated_HDPE_Pipe_(Detail_106A_01-16)-Model
Perforation_Patterns_DW_HDPE_Pipe_(Tech_Note_A101_01-15)
small dia n-12 pipe and fittings
Specification_NY_Region_of_York_Storm_Sewer
Specification_Richmond_Storm Sewer_2011

Installation Guides

Installation_Concrete_Anchors_Steeply_Sloped_Pipe_(Detail_804_02-16)-Model
Installation_Flowable_Fill_for_Thermoplastic_Pipe_(Tech_Note_A5.02)2
Installation_HDPE_Riser_Tee_12in_to_24in_(Detail_404_02-16)-Model
Installation_HDPE_Riser_Tee_30in_to_60in_(Detail_405_02-16)-Model
Soil_Classes_of_Embedment_and_Backfill_Materials_(Detail_109_01-16)-Model
Drainage_Handbook_ADH5_Installation_(08-18)
Recommended_Use_of_Trench_Boxes_(Tech_Note_A5.01)
Trench_Installation_Flowable_Fill_12in_to_60in_Pipe_(Detail_101G_01-16)-Model
Trench_Installation_Parallel_Pipe_10in_to_60in_(Detail_103_1-16)-Model
Trench_Installation_Geotextile_Wrap_HDPE_4in_to_60in_Pipe_(Detail_101B_10-06)-Model
Trench_Installation_Perf_Pipe_4in_to_60in_HDPE_Pipe_(Detail_101C_01-16)-Model
Trench_Installation_Railway_4in_to_60in_HDPE_Pipe_(Detail_107A_01-16)-Model
Utility_Crossings_HDPE_(A5.09_20-08))
Utility_Crossings_Thermo_Plastic_(Tech_Note_A5_09_11-13)
NC_DI_Manual_(10623)_01-10
NY_DI_Manual_(10773_11-11)
OH_DI_Manual_(10775)_02-11
Storm Installation Guide, 08-18
101 Trench Installation Detail (N-12 per AASHTO)
101A Trench Installation Detail (ASTM F2648)

Specifications

Specification_ADS_N-12_PLAIN_END_PIPE_(PER_AASHTO)_4in_60in_09-2018
Specification_ADS_N-12_ST_IB_PIPE_(PER_AASHTO)_4in_to_60in_09-2018
Specification_ADS_N-12_WT_IB_PIPE_(PER_AASHTO)_4in_to_60in_09-2018
Specification_ADS_N-12_PLAIN_END_PIPE_(PER_ASTM_F2648)_4in_to_60in_017
Specification ADS N-12® ST IB PIPE (ASTM F2648) 4 inch to 60 inch
Specification_ADS_N-12_WT_IB_PIPE_(PER_ASTM_F2648)_4in_to_60in_2017
Specification_ADS_WATERSTOP_GASKET_12in_to_60in_2017
Specification_N-12_for_Leachate_(Prod_Note_3.108)
ADH1-Specifications (10-24-18)
Drainage_Handbook_ADH8_References_Standards_(06-14)

Details - Product

Connection_HDPE_and_HP_Storm_to_Manholes_and_Structures_A5.04_March_2016
Connection_HDPE_Bell_to_RCP_(Detail_605_02-16)-Model
Connection_HDPE_CMP_(Detail_601)
Connection_HDPE_CMP_wMarMac_(Detail_602)
Connection_HDPE_RCP_(Tech_Note_603)
Connection_HDPE_RCP_Bell_(Tech_Note_605)
Connection_HDPE_RCP_w_MarMac_(tech_Note_604)
Connection_HDPE_to_CMP_w_Geotextile_Wrap_(Detail_601_02-16)-Model
Connection_HDPE_to_CMP_w_MarMac_(Detail_602_02-16)-Model
Connection_HDPE_to_HDPE_(Detail_607_02-16)-Model
Connection_HDPE_to_HDPE_w_MarMac_(Detail_608_02-16)-Model
Connection_HDPE_to_Manholes_and_Structures_(Tech_Note_A5.04)
Connection_HDPE_to_RCP_w_Geotextile_Wrap_(Detail_603_02-16)-Model
Connection_HDPE_to_RCP_w_MarMac_(Detail_604_02-16)-Model
Connection_HDPE_to_Structure_(Detail_201_01-17)-Model
Connection_Integral_Bell_Transition_for_HDPE_Pipe_(Tech_Note_A5.10_01-10)
Connection_Integral_Bell_Transition_for_HP_Pipe_(Tech_Note_A5.15_01-10)
Connection_MH_Grouted_Waterstop_12in_to_60in_HDPE_(Detail_203_01-16)-Model
Connection_Soil_Tight_MH_Nyloplast_Adapt_12in_to_24in_HDPE_(Detail_202A_01-16)-Model
Connection_Water-Tight_MH_Boot_Adapter_12in_to_24in_HDPE_(Detail_204F_01-16)-Model
Connection_Water-Tight_MH_Boot_Adapter_12in_to_60in_HDPE_(Detail_204B_01-16)-Model
Connection_Water-Tight_MH_Gasket_and_Corr_Pipe_Adapter_Gasket_12_to_60_HDPE_(Detail_204E_02-16)-Model
Connection_Water-Tight_MH_Mechanical_12in_to_36in_HDPE_(Detail_204D_02-16)-Model
Connection_Water-Tight_MH_Precast_Compression_Gasket_12in_to_60in_HDPE_(Detail_204A_02-16)-Model
Connection_Water-Tight_MH_Precast_Compression-Gasket_12in_to_24in_HDPE_(Detail_204C_02-16)-Model
HDPE_Dual_Wall_Pipe_Perforation_Patterns_(Tech_Note_A1.01)
N-12 Mitered Joint Pusher_(Detail_6086)
Pipe_Flotation_(Tech_Note_5.05_03-16)
Pipe_Joints_and_Gaskets_(Tech_Note_A1.05)
ADS Pipes & Nyloplast Structures Catalog into AutoCAD Civil 3D
Installation_Detention_Infiltration_System_HDPE_Pipe_Cross-Section_(Details)

Inspect. & Maintenance. - Technical Literature

Storm_Drainage_Pipe_Repair_ADS_HP_(5.12)
Post_Installation_Testing_for_HDPE_Pipe_(Testing_A5.07_08-16)
N-12_HP_Pipe_Repair_Options_(A5.12)
HDPE_Pipe_Repair_Options_(Tech_Note_A5.03)

Structural Design - Technical Literature

Minimum_and_Maximum_Cover_Depths_4in-48in_F2648_Pipe_N-12_(Tech_Note_A2.02)
Minimum_and_Maximum_Cover_Heights_for_4in-60in_N-12_per_AASHTO_(Tech_Note_2.01_09-14)
Minimum_Cover_Temporary_Single_Axle_HDPE_Pipe_(Detail_111A_04-16)-Model
Minimum_Cover_Temporary_Tandem_Axle_HDPE_Pipe_(Detail_111B_04-16)-Model
Minimum_Cover_Temporary_Tracked_Axle_HDPE_Pipe_(Detail_111C_04-16)-Model
Drainage_Handbook_ADH2_Structures_(05-15)

Hydraulics - Technical Literature

Drainage_Handbook_ADH3_Hydraulics_(07-14)

Durability - Technical Literature

Chemical_Resistance_PE-Elastomers_(Tech_Note_A4.01)
Comparison_F2648_vs_M294_(10-18)
Drainage_Handbook_ADH4_Durability_(11-15)

Fittings

Fittings_Integral_Bell_Transition_for_HDPE_Pipe_(Tech_Note_A5.10)
Fittings_Integral_Bell_Transition_(Prod_Note_3.105_02-02)
Fittings_HDPE_Dual_Wall_Tees
Fittings_HDPE_Dual_Wall_Wyes
Fittings_HDPE_Dual_Wall_Reducers
Fittings_HDPE_Dual_Wall_Fabricated_Reducers
Fittings_HDPE_Dual_Wall_Fabricated_Bends
Fittings_HDPE_End_Caps_Plugs
Fittings_HDPE_Dual_Wall_Misc

Case Studies/Approvals

CSE - Major interchange revamp Relieves Congestion Feb 2018
Approval_GA_N12_DOT_(06-06)
Approval_MO_St_Louis_MSD_Pipe_(05-08)
Approval_FLDOT_HDPE-(1009)
Approval_NJ_DOT_AD1070809
Approval_RI_HWY_(AD105080_08-09)
Approval_WA_DOT_(AD040113_09-08))
Approval_OR_DOT_(AD030113_02-13)
Article_Depth_Perception_Waterworld_(04-13)
Article_Drainage_Designs_ADS_CENews_(10-08)
Article_EAW_Case_Plastic_Pipe_Institute_(Dec-2016
Article_IN_Projects_planned_in_Merrillville_Lake_County_News_Stormwater_(12-16)
Article_NH_Highway_Runoff__Beyond_the_Highway_(08-16)
Article_N12_Lower_Cost_DOT_Roads___Bridges_(98)(1)
Article_ME_Rehab_CSO_Lewiston_Underground_N-12)(01-14)
Article_NE_HDPE_Airport_Expansion_grand_forks_land_and_water_proof_(03-10)
Article_SOL_N-12_Rehab_Storm_Stormwater_(03-15)
Article_IL_Withstanding_Excessive_Loads_iwwd-(09-15)
PE_Section_for_Culvert_Applications_(Product_Note_3.104)
Mailer_Approval_TX_Houston_HDPE_(08-08)

Brochure

Brochure_HDPE_Pipe_Products_(09-15)
Brochure_HDPE_Railcar_Load_(ADSTTCI_AD460610_08-10)
Brochure_N-12_(10-17)
Sell_Sheet_N-12_Soil_Tight_Int_Bell_(ASTM_F2648)_(10628)
Brochure_N-12-WT-IB-ASTM-F2648-(10629_08-15)
Sell_Sheet_N-12-WT-IB-ASTM-F264_(08-15)
Brochure_Railroad_N-12_(08-10)
Brochure_RCP_Hard_Facts_(01-03)
Sell_Sheet_N-12_Soil_Tight_Iint_Bell_(ASTM)_(10628)
Water Management Product Catalog 2018
11047 Ag Products Brochure, 07-17
Sell-Sheet_N-12_Soil_Tight_AASHTO_(10581)_10-18
Sell_Sheet_N-12_WT-IB-AASHTO_(10582)_10-18)