Drainage and Water Management Flashcards

What is the purpose of a downspout boot (elbow at the base)?

Answer: To redirect the vertical downspout flow to a near-horizontal direction at the base

The bottom elbow (boot) turns the downspout from vertical to horizontal or angled, directing water away from the structure at grade level.

What type of drainage system uses a buried pipe to carry downspout water to a daylight outlet or street?

Answer: Underground solid pipe drainage (downspout to daylight system)

Underground solid pipe drainage connects downspouts to a pipe that terminates at a distant daylight outlet, moving water far from the foundation entirely underground.

What is the recommended minimum slope for a buried downspout drainage pipe to ensure self-cleaning flow?

Answer: 1/4 inch per foot

A minimum slope of 1/4 inch per foot in the buried pipe ensures water flows under gravity and sediment does not accumulate and clog the pipe.

What is a pop-up emitter and where is it installed in a downspout drainage system?

Answer: A spring-loaded outlet at the end of an underground drain pipe that opens under water pressure and closes when dry

Pop-up emitters are installed at the end of buried drainage pipes; they open automatically when water flows through and close when dry to prevent pest entry.

What is the purpose of a dry well (also called a seepage pit) connected to a downspout system?

Answer: To allow collected stormwater to percolate slowly into the surrounding soil

A dry well is an underground perforated chamber surrounded by gravel that slowly releases collected stormwater into the soil, reducing surface runoff.

What problem can result from downspout water being discharged too close to a neighbor's property line?

Answer: Potential nuisance or trespass liability if the water damages the neighbor's property

Directing water onto a neighbor's property can result in civil liability for water damage, and local ordinances may also prohibit it.