System | Flow Rating/Linear foot Per (ASTM 4716) | “In-Flow” Rating (or Permeability Rate) in % of the openings across the surface | 4-gallon Bucket Test (Time elapsed in seconds for water to empty) |
4″ Perforated Pipe | 32 gal | 4-5% | 27 |
Gravity (WaterGuard) System | 8-9% | 23 | |
Hydraway Single Layer | 10.5 gal | 75% | 11 |
Hydraway Double Layer | 10.5 | 75% | 6.5 |
There are several French drain options available on the market today. However, none compare to the compressive strength, guaranteed results, and as shown in the video below, in-flow rate. Flow ratings are only a measure of how quickly water flows from the pipe. A more important question to ask is, “what is the in-flow rate?”
Below is a photo of a failed perforated pipe system (left) that has been clogged and caved in because of its lack of strength. Hydraway (right) has high composite strength due to its polyethylene core. Hydraway’s unique design allows for 85% available open space for water intake. Take a look at the chart below for more comparisons between traditional perforated pipe drainage and irrigation systems, and the industry-best Hydraway system.
Perforated Pipe | Hydraway Drainage | |
Soil Infiltration | Easily Clogs | Will Not Clog |
Labor | Labor Intensive | Quick Install |
Open Surface for Water Intake | 4% | 85% (open on all 4 sides) |
Draining Speed | Slow | Rapid |
Average Trench | 8″ wide by 12-16″ deep | 3″ wide by 9″ deep |
very thorough in explaining and very knowledgeable.
Bunkum Rd, East St. Louis, IL, USA
