Question

1) Which of the following situations most requires formal drainage design, including drain inlets, pipes, and connection to the stormwater system?

For 1 Point(s)

Answer:

A) A floodplain wildlife habitat

B) An urban plaza completely covered by pavement

C) An agricultural field

D) A backyard lawn

2) The SCS method for calculating runoff is preferred for designing stormwater storage facilities because:

For 1 Point(s)

Answer:

A) It is more complicated

B) It takes duration of storm event into account

C) It uses basic data that is more accurate because it is derived from historical rainfall data and site-specific soil types

D) It can be performed by a computerized program that is available for free from the NRCS

3) Emil Kuichling is credited with clarifying the concept of the maximum flow a storm generates, or Q. Which of the following is the best definition of Q?

For 1 Point(s)

Answer:

A) Quantity of rainfall hitting the soil during the storm

B) Quantity of water that is absorbed by soil and foliage

C) Quantity of precipitation reaching a storm drain when the rain is falling hardest

D) Quantity of precipitation reaching a storm drain when water from every part of the site has had time to travel to the drain

4) Hydrographs are graphical representations of the volume of stormwater that will be discharged from a given watershed during a storm. Which of the following is not shown on a hydrograph?

For 1 Point(s)

Answer:

A) Soil type

B) Passage of time during the storm event

C) Volume of flow in cubic feet per second

D) Moment of peak discharge

5) The concept of a "design storm" classifies storm events by statistical frequency of occurrence. What is the best definition of a 100-year storm event?

For 1 Point(s)

Answer:

A) The storm that deposits the highest volume of precipitation over a hundred-year period

B) The storm that occurs every one hundred years by the calendar

C) The storm that has a 1 percent chance of happening in any given year

D) The storm that can be predicted to occur once a century

Answer 1

1-B)an urban plaze completely covered by pavement should reqrequire a forman design to facilitate the runoff water since the volume is high due to no infiltration.

2-SCS curve number method is best to design storm water storage because it takes into consideration the historical rainfall data(c)

3-Q or the maximum flow that a dam generates is the flow that occurs when all the runoff from drains in the basin has reached the drai(D)

4-Hydrographs only show the flow volume and rainfall with respect to time .there is no mention of soil type in a hydrograph (A)

5-a hundred year storm means that a storm of a particular intensity has the probability of occuring once in 100 years.(D)