Rainwater Filtration System for Rainwater Management

d-Rain Joint™ Pavement Rainwater Filtration System designed for onsite rainwater management

The d-Rain Joint™ system is a highly effective and unique design that allows the use of traditional concrete, asphalt or paver type materials to construct a high performing permeable, pervious surface system. As an exterior, linear filter drain for impervious surfaces, the d-Rain Joint™ puts filtered rainwater in the underneath gravel detention area of the pavement increasing the usable surface and eliminating costly storm water drainage infrastructure.

As a Sustainable Drainage System (SuDS), the d-Rain Joint™ is a simple, low-cost, and robust onsite storm water management alternative compared to other permeable, pervious surface options and can be used wherever a permeable, pervious driveway, parking lot, street or walkway is needed. Innovative site designs that use smaller-scale low impact development practices dispersed throughout an impervious site are excellent ways to achieve the goals of reducing flows and improving water quality, while recharging local groundwater sources. By installing a new stormwater management technology, like the d-Rain Joint™, it drains the runoff stormwater before it gets to the flooding stage.

Easy to install like a standard expansion joint in a driveway or walkway, the ADA-compliant d-Rain Joint™ drainage channel system is less than 1” wide and is virtually undetectable between the joints of a concrete slab. The product is highly durable material and gives storm water a path to a sub-surface drainage bed. This provides an outlet for surface water to be directed to a drainage bed and collected and held or allowed to percolate back into the soil to conform to environmental conservation and protection requirements. The channel-inserted filter captures sediment to ensure continued effectiveness of the system.

Advantages of the d-Rain Joint™

• Cost-effective.  Adds nominal costs to standard pour-in-place surfaces.
• Easy installation.  Installs using standard practices and equipment.
• Low-maintenance.  Simply clean or replace filter.
• Immediate storage capacity.  With aggregate type/depth tailored for local needs.
• Strength and durability.  Safe for heavy vehicles and snow removal.
• Treats stormwater onsite.  Environmentally sound option to contain runoff onsite.

Homebuilders and Remodelers.
The d-Rain Joint™ is simple and cost-effective to spec and install. It offers a simple way to adhere to stormwater runoff requirements.

Concrete Suppliers and Contractors.
The d-Rain Joint™ can be installed during the form and pour process by utilizing standard equipment, tools, and procedures.

HUD/Government.  The d-Rain Joint™ offers an ecologically and economically responsible solution.

Homeowner.  The d-Rain Joint™ uses standard tools and installation procedures, giving homeowners a simple, green alternative for hard surfaces. Very little maintenance is required.

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