LARE Grading, Drainage, and Stormwater exam 2024/2025 with 100% correct answers
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Course
LARE Grading, Drainage, and Stormwater
Institution
LARE Grading, Drainage, And Stormwater
Swale correct answersA constructed vegetated drainage channel.
culvert correct answersAny artificial covered channel for the passage of water through a bank or under a road, canal.
Pipe culvert correct answersCulvert with a circular cross section
Box culvert correct answersCulvert with a r...
culvert correct answersAny artificial covered channel for the passage of water through a bank or under a
road, canal.
Pipe culvert correct answersCulvert with a circular cross section
Box culvert correct answersCulvert with a rectangular cross section
catch basin correct answersStructure used to collect and divert surface runoff to a subsurface storm
water conveyance system
Sump correct answersUsed to trap and collect debris
drain inlet correct answersAllows stormwater to run directly into the storm sewer; does not have a
sump. Opening is usually covered with a metal grate for safety.
Area Drain correct answersPrefab structure used to collect sheet flow runoff in paved areas
trench drain correct answersLinear structure used to collect sheet flow runoff in paved areas
manhole correct answersA hole through which a person can enter a sewer, pipe, conduit, and so on for
inspection, repair, or maintenance.
Placement of manholes correct answersWhere there is a change in size, slope, or direction of piping
, Stormwater BMPs correct answersMeasures developed to reduce flooding, remove pollutants, or
improve environmental quality
Infiltration systems correct answersmimic natural recharge, allowing water to soak into the ground
Benefits of infiltration systems correct answersReduced runoff, groundwater recharge, reduced
downstream peak flows, preservation of existing vegetation, reduced construction costs
Subcategories of infiltration systems correct answersSurface, subsurface, porous pavement
Infiltration Basin correct answerssurface impoundment created by damming or excavating; store and
infiltrate water. High rate of failure due to lack of maintenance, no multiple uses, and require large areas.
rain garden correct answersrunoff area that is planted with water-tolerant plants to slow runoff and
promote infiltration
Infiltration Trench correct answersExcavation backfilled with coarse aggregate stone. May be covered
with a protective surface like grass, sand or stone
Observation Well correct answersVertical pipe placed in trench to monitor changes in the infiltration rate
Dry well correct answersVertically oriented excavation filled with stone to store and infiltrate water
Porous Pavement correct answerspavement that allows rain water to infiltrate through the soil below
Benefits of porous pavement correct answersIncrease previousness while still providing a stable surface
Types of porous pavement correct answersAsphalt, concrete, open grid modular pavement
Considerations for porous pavement correct answersSurrounding soil not pervious; close depth to
groundwater; concerns about contamination
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