Drain Pipes

When Do I Need Drain Pipes?

Sites with poor draining soils or walls over 4 ft. (1.2 m) tall will require a toe drain.

Drain pipes used in toe drain applications must be properly vented a minimum of every 50 ft. (15 m). To accomplish this, vent the drain pipe to daylight or a lower elevation on the site.

When venting to a lower elevation, it is important that all drain locations are properly marked and protected to ensure that the drainpipe is not damaged or plugged. Rodent screens can be used to allow the water to flow through the outlet pipes and keep the pathway clear of debris.

Follow these rules of thumb:

• All walls taller than 4 ft (1.2 m)
• Sites with poorly draining soils
• Alongside paved areas
• Water lines, mains or fire hydrants
• With slopes above the wall
• On multi-tiered and terraced walls
• All commercial and municipal projects

Vent to a lower grade

Typical Drain

Prior to constructing the wall, review drainage plans and details to identify all potential sources of concentrated water. Examples that must be accounted for are:

• Driveways
• Slopes above walls
• Grading of site
• Water lines, mains or fire hydrants
• Roof down spouts
• Sump pump outlets
• Irrigation systems