Description
Product Overview
The ADS 8 × 20 dual wall drainage pipe is a highdensity polyethylene (HDPE) stormwater pipe engineered to convey groundwater and runoff efficiently in landscaping, site, and infrastructure drainage systems. Its dual wall construction features a smooth interior for low resistance flow and a corrugated exterior for structural strength under buried conditions, making it a durable, longlasting alternative to concrete or metal drainage pipes. The pipe is lightweight for easier handling and installation and can be joined using bellandspigot couplings with soiltight or watertight gasket options for secure connections.
Key Features
Nominal Diameter: 8 in
Length: 20 ft
Material: HighDensity Polyethylene (HDPE)
Wall Type: Dual wall (smooth interior / corrugated exterior) for efficient flow and structural strength
Joint Options:
Soiltight (ASTM D3212) bellandspigot with gasket
Plain end or watertight options available
Hydraulics: Smooth interior with a Mannings n 0.012 for effective water conveyance
Resistance: Inert HDPE resists corrosion, chemical attack, abrasion, and freeze/thaw cycles
Lightweight: Easier to transport and install versus heavier materials
Typical Specifications
Standards: ADS dual wall pipe typically meets AASHTO M252 / M294 and ASTM F2306 / F2648 / D3350 (pipe material & performance) depending on configuration and joint type.
Outside Diameter: ~9 1/10 (typical for 8 nominal)
Inside Diameter: ~8 nominal
Applications: Storm drainage, French drains, yard / landscape water control, subsurface groundwater conveyance
Benefits
Promotes efficient drainage and reduces the risk of surface flooding or soil saturation.
Offers a long service life due to corrosion and abrasion resistance.
Fewer joints (20 sticks) mean reduced potential for infiltration/exfiltration points.
Compatible with a wide range of fittings, couplers, and installation practices.
Typical Uses
Yard and landscape drainage solutions
Foundation or French drain systems
Stormwater conveyance in residential / commercial sites
Subsurface water management and infrastructure projects
If youd like, I can provide a comparison of perforated vs solid sections (for gravel trench vs direct storm conveyance) and joint types (bellandspigot soiltight vs watertight), which are common design choices in drainage systems.
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