The runoff coefficient is directly proportional to the rate of runoff.TrueFalse What condition will convert a type C hydrograph to a type A hydrograph?A. Time of recession = duration of storm● B. Time of concentration = duration of stormOC. Time of recession = duration of runoffOD. Time of concentration = duration of runoff

The first part of the question is asking about the conditions that would convert a type C hydrograph…

Answered: The runoff coefficient is directly…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 6P

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Similar questions

The runoff volume is expressed in the units of depth similar to the precipitation units. Select one True False
Calculate the runoff depth (inch) if: Rainfall (inch) = 2 Curve number =63 0.3 0.2 0.1 0.6 0.4 0.5
A catchment is made of 60% area with runoff coefficient 0.40 and remaining 40% area with runoff coefficient 0.6O. What is the weighted runoff coefficient to be used in Rational formula? * 0.6 0.24 0.5 0.48
The period of runoff for a 1-hour UH is given as T. The resulting period of runoff for a 2-hour UH derived from it is: Can't say because the value of the unit was not specified Less than T T+1
Determine equivalent runoff coefficient
Find runoff R in cm.
The land use of an area and the corresponding runoff coefficients are as follows: S. Land use No. 1. 2. 3. 4. Roads Lawn Area Runoff (ha) coefficient 10 20 Residential area 50 Industrial area 20 0.70 0.10 0.30 0.80 What is the equivalent runoff coefficient?
a paved lot that is 150m by 150m sloped in one direction at a rate of 2% has the time of concentration of 6minutes and a five year storm with duration of 6minutes with an intensity of 12mm per hour.the runoff coefficient for this parking lot is 0.83. a.using rational method determine the amount of runoff that would occur for the parking lot b.the runoff from part a be contained in a trapezoidal drainage ditch with the following properties side slope=2m horizontal for every 1m rise width of invert=2m longitudinal slope=0.006m/m roughness coeffiecient =o.070 if the maximum permitted depth of water is 100mm which gives a cross section area of flow=0.22m^2 and a wetted perimeter 0f 2.4 using manning s equation for open channel flow,determine if the ditch will be able to accomodate the flow in part a
o. Determine the mean runoff flow in cfs from a drainage area of 175 acres using the English equation for a 25-yr frequency in inches per hour in Nevada, The area is sloping at 2% and is covered with poor surface grass. The furthest point from the inlet is 72 meters.
Determine the runoff coefficient for an area of 0.1 km2. 7000 m2 by Gravel driveways and walks, and 12000 m2 by Asphaltic cement streets, 22000 m2 is covered by buildings. The remaining area is slope >7%, heavy soil, covered by grass lawn 0.8705 ~0.5445 O 0.7705 ~0.6445 O 0.6705 ~0.4445 O
For the relation between direct runoff and time? A- It starts and end with base flow. B- It starts before base flow and ends after. C- it It starts and end with direct runoff. D- It starts before base flow and ends with it. What is the correct answer??
4. For an urban area, the land use of the area and the corresponding runoff coefficients are given below. Calculate the equivalent runoff coefficient. Assume the intensity of rainfall as 103.8 mm/hr. Estimate the peak flow rate for this area. (1 ha = 10 m) Runoff coefficient Land use Roads Residential area Industrial area Area 0.7 50 0.3 10 0.8

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