Drainage and Stormwater Management Flashcards
6 cards from real FDOT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Drainage and Stormwater Management flashcards as text
What is the minimum pipe cover required under FDOT traveled roadways for storm drain pipes?
Answer: 18 inches
FDOT requires a minimum of 18 inches of cover over storm drain pipes under traveled roadways to protect against traffic loads and prevent crushing.
According to FDOT standards, what is the minimum slope required for storm drain laterals to maintain self-cleaning velocity?
Answer: 0.30%
FDOT requires a minimum slope of 0.30% for storm drain laterals to maintain the minimum self-cleaning velocity of approximately 2 fps.
What is the function of a mitered end section (MES) on a culvert pipe?
Answer: Transition the pipe end to match the slope of the fill embankment
A mitered end section transitions the pipe end at an angle to match the embankment slope, providing a neat appearance and reducing scour.
Under FDOT specifications, what bedding material is typically required for reinforced concrete pipe in Type II bedding?
Answer: Coarse sand or granular material
FDOT Type II bedding requires coarse sand or approved granular material shaped to provide uniform support along the pipe barrel.
What FDOT environmental permit is typically required for stormwater management systems discharging to state waters?
Answer: Environmental Resource Permit (ERP)
An Environmental Resource Permit (ERP) from the Florida Department of Environmental Protection or water management district is required for stormwater systems discharging to state waters.
What is a 'french drain' as used in FDOT highway drainage design?
Answer: A perforated pipe in a gravel-filled trench for subsurface drainage
A french drain consists of a perforated pipe surrounded by gravel in a trench, designed to intercept and redirect subsurface groundwater.