What is the peak discharge from the grounds of the Miami Park during a 10-year storm? Assume that the time of concentration of the grounds is 1.5 hours. The composition of the grounds is as follows: Intensity, mm/h 200 150 Use the lower range values from the Table 4.4 and IDF curves for Miami, FL given in the cheat sheet. 100 50 Character of surface Area (m²) Parking lot, brick Playgrounds 0 Lawns, sandy soil 2.0% slope 7.0% slope Selected runoff coefficients Description of area or character of surface Runoff coefficient 15,450 10,100 Return period -0-2 years 2 Duration, h (c) Miami (1911-1951) 45,000 120,600 5 years 10 years <-25 years 3 4 Description of area or character of surface Runoff coefficient

Structural Analysis
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Chapter2: Loads On Structures
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What is the peak discharge from the grounds of the Miami Park during a 10-year
storm? Assume that the time of concentration of the grounds is 1.5 hours. The composition
of the grounds is as follows:
Intensity, mm/h
200
Use the lower range values from the Table 4.4 and IDF curves for Miami, FL given in the
cheat sheet.
150
100
50
0
Residential
Selected runoff coefficients
Description of area or
character of surface
Business
Downtown
Neighborhood
Single-family
Multi-units, detached
Multi-units, attached
Character of surface
Parking lot, brick
Playgrounds
Lawns, sandy soil
2.0% slope
7.0% slope
Residential (suburban)
Apartment
Industrial
Light
Heavy
Parks, cemeteries
Playgrounds
Runoff
coefficient
2
Duration, h
(c) Miami (1911–1951)
0.70 to 0.95
0.50 to 0.70
0.30 to 0.50
0.40 to 0.60
0.60 to 0.75
0.25 to 0.40
0.50 to 0.70
0.50 to 0.80
0.60 to 0.90
0.10 to 0.25
0.20 to 0.35
2 years
10 years
Area (m²)
15,450
10,100
Return period
45,000
120,600
3
5 years
25 years
Railroad yard
Unimproved
Pavement
4
Description of area or
character of surface
Asphaltic and concrete
Brick
Roofs
Lawns, sandy soil
Flat, 2 percent
Average, 2 to 7 percent
Steep, 7 percent
Lawns, heavy soil
Flat, 2 percent
Average, 2 to 7 percent
Steep, 7 percent
Runoff
coefficient
0.20 to 0.35
0.10 to 0.30
0.70 to 0.95
0.70 to 0.85
0.75 to 0.95
0.05 to 0.10
0.10 to 0.15
0.15 to 0.20
0.13 to 0.17
0.18 to 0.22
0.25 to 0.35
Transcribed Image Text:What is the peak discharge from the grounds of the Miami Park during a 10-year storm? Assume that the time of concentration of the grounds is 1.5 hours. The composition of the grounds is as follows: Intensity, mm/h 200 Use the lower range values from the Table 4.4 and IDF curves for Miami, FL given in the cheat sheet. 150 100 50 0 Residential Selected runoff coefficients Description of area or character of surface Business Downtown Neighborhood Single-family Multi-units, detached Multi-units, attached Character of surface Parking lot, brick Playgrounds Lawns, sandy soil 2.0% slope 7.0% slope Residential (suburban) Apartment Industrial Light Heavy Parks, cemeteries Playgrounds Runoff coefficient 2 Duration, h (c) Miami (1911–1951) 0.70 to 0.95 0.50 to 0.70 0.30 to 0.50 0.40 to 0.60 0.60 to 0.75 0.25 to 0.40 0.50 to 0.70 0.50 to 0.80 0.60 to 0.90 0.10 to 0.25 0.20 to 0.35 2 years 10 years Area (m²) 15,450 10,100 Return period 45,000 120,600 3 5 years 25 years Railroad yard Unimproved Pavement 4 Description of area or character of surface Asphaltic and concrete Brick Roofs Lawns, sandy soil Flat, 2 percent Average, 2 to 7 percent Steep, 7 percent Lawns, heavy soil Flat, 2 percent Average, 2 to 7 percent Steep, 7 percent Runoff coefficient 0.20 to 0.35 0.10 to 0.30 0.70 to 0.95 0.70 to 0.85 0.75 to 0.95 0.05 to 0.10 0.10 to 0.15 0.15 to 0.20 0.13 to 0.17 0.18 to 0.22 0.25 to 0.35
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