HomeMy WebLinkAboutSuncore Care Inc +++++++++++++++++++++++++++++++++++++++ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ++
Process from Point /Station 13.000 to Point /Station 14.000
* * ** SUBAREA FLOW ADDITION * * **
RESIDENTIAL(1 acre lot)
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
SCS curve number for soil(AMC 2) = 32.00
Pervious ratio(Ap) = 0.8000 Max loss rate(Fm)= 0.782(In /Hr)
Time of concentration = 6.15 min.
Rainfall intensity = 4.804(In /Hr) for a 25.0 year storm
Effective runoff coefficient used for area,(total area with modified
rational method)(Q =KCIA) is C = 0.768
Subarea runoff = 3.573(CFS) for 1.050(Ac.)
Total runoff = 24.158(CFS)
Effective area this stream = 6.55(Ac.)
Total Study Area (Main Stream No. 1) = 6.55(Ac.)
Area averaged Fm value = 0.706(In /Hr)
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Process from Point /Station 14.000 to Point /Station 15.000
* * ** PIPEFLOW TRAVEL TIME (Program estimated size) * * **
Upstream point /station elevation = 6.860(Ft.)
Downstream point /station elevation = 6.670(Ft.)
Pipe length = 39.00(Ft.) Manning's N = 0.012
No. of pipes = 1 Required pipe flow = 24.158(CFS)
Nearest computed pipe diameter = 30.00(In.)
Calculated individual pipe flow = 24.158(CFS)
Normal flow depth in pipe = 19.92(In.)
Flow top width inside pipe = 28.34(In.)
Critical Depth = 20.09(In.)
Pipe flow velocity = 6.99(Ft /s)
Travel time through pipe = 0.09 min.
Time of concentration (TC) = 6.25 min.
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Process from Point /Station 14.000 to Point /Station 15.000
* * ** CONFLUENCE OF MAIN STREAMS * * **
The following data inside Main Stream is listed:
In Main Stream number: 1
Stream flow area = 6.550(Ac.)
Runoff from this stream = 24.158(CFS)
Time of concentration = 6.25 min.
Rainfall intensity = 4.761(In /Hr)
Area averaged loss rate (Fm) = 0.7060(In /Hr)
Area averaged Pervious ratio (Ap) = 0.7220
Program is now starting with Main Stream No. 2
Process from Point /Station 20.000 to Point /Station 21.000
* * ** INITIAL AREA EVALUATION * * **
3.5 - 3.5
3 3
I
2.5 2.5
U
w
2
C.)
2 2
0
L.1 Ior) YR r 1.52.
-J
4„ 1.5 1.5
rr
to-YR r 1. t </
'
1 I
0.5 0.5
•
0' 0
2 5 10 25 50 -
RETURN PERIOD IN YEARS 941- &SCI r �'er�e r are c-
NOTE' �TCS I
I. FOR INTERMEDIATE RETURN PERIODS PLOT 10 -YEAR AND 100 -YEAR ONE HOUR VALUES FROM MAPS, 2S �K
THEN CONNECT POINTS AND READ VALUE FOR DESIRED RETURN PERIOD. FOR EXAMPLE GIVEN 10-YEAR
ONE HOUR ■ 0.95 AND 100 -YEAR CNE HOUR 61.6e, 25 -YEAR ONE HOUR , 1.I8 ".
REFERENCE'NOAA ATLAS >Z, VOLUME =C- CAL.,1973 RAINFALL DEPTH VERSUS
SAN BERNARDINO COUNTY RETURN PERIOD FOR
HYDROLOGY MANUAL PARTIAL DURATION SERIES
D - FIGURE D -2
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