Given the attached topo map (note the scale and provided “scale”) and the following information and guidance: Design sto
Posted: Sun May 08, 2022 8:46 pm
Given the attached topo map (note the scale and provided
“scale”) and the following information and guidance:
Design storm frequency is 25 years.
For the street, instead of Mannings, assume a gutter velocity of
1.8 ft/s
The residential development has only impervious areas with a
C=0.9 (house, street) and grassy area with a C=0.30
Development is located in Intensity Zone C (use ODOT IDF
equation for rainfall intensity and the ODOT time of concentration
equations)
Clearly mark the assumed travel path for rain-water on the
figure for which you are using to make the time of concentration
calculations
1 acre = 43,560 ft2
a)What is the peak discharge (QP) at the inlet?
b)What would happen to your QP estimate if the street slope were
increased?
#207 I 626* 2018 3 U 400 900 - 399.01 X4019 E- Basin divide 1 GATES PL 396 2 Inlet (point of analysis) 0 666 Topographic map Scale: 1 = 100 (1:1200) Contour interval 2
“scale”) and the following information and guidance:
Design storm frequency is 25 years.
For the street, instead of Mannings, assume a gutter velocity of
1.8 ft/s
The residential development has only impervious areas with a
C=0.9 (house, street) and grassy area with a C=0.30
Development is located in Intensity Zone C (use ODOT IDF
equation for rainfall intensity and the ODOT time of concentration
equations)
Clearly mark the assumed travel path for rain-water on the
figure for which you are using to make the time of concentration
calculations
1 acre = 43,560 ft2
a)What is the peak discharge (QP) at the inlet?
b)What would happen to your QP estimate if the street slope were
increased?
- Given The Attached Topo Map Note The Scale And Provided Scale And The Following Information And Guidance Design Sto 1 (85.36 KiB) Viewed 17 times