Green Roof AirDrain Drainage – What drains better than air!
No other system comes close in ease of installation, price value and performance!!
With over 3+ million sqft. of green roofs installed across the nation over the last 16 years, let us show you how easy and cost effective it is to use AirDrain!
AirDrain geocell has patented expansion and contraction connectors built into the part and can add valuable LEED points to any green roofing project. With a unique and extremely easy to install assembly design and 100% post-manufactured recycled content.
Lightweight at only 3.1 pounds per 7 square feet, with a rating 33,552 psf. AirDrain is the ideal drainage medium for green roof top applications whether decorative or in constant use.
Arriving 32″ x 32″ inch pallets at 798 sqft. they easily fit into an elevator for transports to a rooftop.
Move water rapidly vertically and horizontally or capture it for retention with AirDrain’s 92% air void and 400 drainage notches on each side of the part, it’s easy.
AirDrain is capable of holding .576 gallons of water per sqft. if needed until it can evacuate from the roof to the perimeter exit drains. Which is a holding capacity equal to approximately 6 inches of compacted gravel.
Over the years, many architects and engineers have asked us just how fast will the AirDrain grid drain. Our reply has always been that the AirDrain is only limited by what is above it and the exit drains. Due to the fact that the area of an AirDrain part is 1” inch high and has a 92% air void.
Recently, our AirDrain grid was tested using the ASTM D 4716 Hydraulic Transmissivity Standard Test Method. The testing was done using plates on top and bottom of the AirDrain part, setting them to the required slope and adding water from the high side of one end down the slope.
AirDrain was draining so fast they had to modify their testing equipment to accommodate the volume of water AirDrain could move!
As it turns out there is practically no resistance to the water draining using the AirDrain grid? The most important factor to consider is the percentage of slope that the AirDrain is sitting on.
For example, it could rain over 171 inches in an hour and AirDrain could drain it on a 1/2% slope.
No other product on the market comes close to AirDrain’s ability to drain a project, it’s not even close.
So when you see the claims of manufacturers rainfall per hour drainage, ask them if they have the test that really shows a products real world drainage capability.
The ASTM D4716 was done with 2 metal plates top and bottom and the grid tilted at a 1/2% slope. This is the only way to be able to claim drainage per hour. No matter what the water has to move horizontally through the sub drainage to the perimeter!
Don’t let em kid ya ! If they don’t have this test ask them why?
No other product stacks and ships more compactly, reducing the number of trucks and the amount of fuel required to transport to the green roof job site typically to 2 trucks on a 95k sqft. project. Don’t forget shipping costs AirDrain cant be beat !
Installing the AirField System results in a more stable surface area and a more consistent GMAX across the project. AirDrain’s delivers a 14.7% on cement and a 19.4% reduction on an aggregate base in GMAX. And that reduction and consistency will stay for the life of the field with AirDrain .
AirDrain all but eliminates infill migration and a floating field, and helps brings a consistent GMAX across the entire field. (which can drastically affect the safety of the project putting owners in an extreme liability risk scenario)
The AirDrain Pallets are designed to be able to be taken up an elevator at 32″ x 32″
Installing the AirDrain on a roof top with A/C or heat, brings 1″ of air between the roof top and the artificial grass. Creating an R factor scenario similar to a thermal pain window.
Build a better green roof with AirDrain. What drains better than air !
The Airfield Systems AirDrain grid helps create a HIC and GMAX that remains consistent across the entire project.
Unlike traditional shock pads or e-layers the AirDrain grid is 1″ high, extremely light weight at 3.1 lbs per 7 sqft., 233 psi (unfilled) and has a 92% air void.
It’s vertical and lateral drainage unmatched in the industry, all but eliminates standing water and moisture trapped on the rooftop. Making infill migration a thing of the past
AirDrain Agronomic Natural Turf Drainage
A research project conducted at Texas A&M, has concluded that you can greatly reduce your irrigation needs using AirField Systems AirDrain. The five year research project was jointly funded by the United States Golf Association and AirField Systems and was a collaborative effort between Texas A&M, AirField Systems and the United States Golf Association.
The data from the research showed that the AirField Systems drainage profile can provide up to three more days of plant available water than a United States Golf Association (USGA) recommended gravel and sand profile.
The AirDrain Advantage
Benefits of AirField Systems AirDrain in a green roofing drainage system include:
- Brings up to a 19.4% reduction in Shock Attenuation reducing the strain on joints and ligaments, which will stay consistent for the life of the product.
- AirDrain can be reused when the Synthetic Turf must be replaced multiple times
- Can help qualify for LEED and other green building credits
- A smaller carbon and development footprint with greatly reduced excavation and site disturbance
- Water harvesting reclamation and reuse is easy
- AirDrain is a 100% recycled copolymer with the impact modifier “metallocene” qualifying it as a “No Break” plastic
Resins can be made to the following specification “Flammability UL 94 Medium Impact Flame Retardant Polypropylene Copolymer Resins”
Specifications, Studies and Downloads
ARCAT is a valuable resource for creating a complete set of CSI specifications.
Green Roof – Rooftop Drainage
Green Roof Drainage Specifications Proper Sequencing and Orientation Green Roof Drainage Truck and Freight Loading Layout Green Roof Roof top Assembly (Natural Turf) Green Roof Roof top Assembly for Synthetic Turf with Uplift Prevention
ASTM D4716 Flow Rate per Unit Width and Hydraulic Transmissivity AirDrain Synthetic Turf Green Roof Top Drainage Test Report: ASTM C 518-10 Steady Thermal Transmission Properties by means of Heat Flow Meter Apparatus Test Report: ASTM F 355 95 and ASTM 1936 98 AirDrain Gmax Testing on Cement Roof Top, DiGeronimo Mikula Associtates LLC. Product Data Sheet: Flammability UL 94 Flame Retardant Drainage
To discuss your green roof construction project, call AirField Systems at (405) 359-3775.
A design with AirDrain should always insure the integrity of what is below the grid, especially any water proofing materials for the life of the project. AirDrain is a sub surface drainage layer. And is not a sub base in anyway, it will only reflect what it sits on top of.