Drainage and Retention
• Perforated Dimple Drain
• Dimple Drain
. The dimple drain comes in multiple configurations. The main characteristic you need to understand is the flow rate, compressive strength, and fabric. There are ¼” thickness giving it a flow rate of 9 gall per min per foot, the compressive strength of 10,000 psf, and a 3.5 oz non-woven fabric. The main use is for backfilled and retaining walls up to 20 feet in depth (most economical choice). There are (High Strength) is ¼” thickness giving it a flow rate of 9 gall per min per foot, the compressive strength of 30,000 psf, and a spun-bonded fabric. The compressive strength gives it the ability to use horizontally when other trades are working on it to install the overburden.
• Entangled Net
. The spun-bonded fabric allows you to pour concrete for it does not adhere which allows the fabric not to get destroyed due to thermal movement. There are 7/16” thickness giving a flow rate of 16 gall per minute per foot. The compressive strength is 15,000 psf with a 3.5 ox non-woven. This has a superior flow rate and can be used in horizontal vertical applications. There also have polymer film backing.