Question: [ 1 7 pts ] Peak Discharge estimation ( SCS - TR 5 5 ) : Two sites have an area of 5 acres, a

[17 pts] Peak Discharge estimation (SCS-TR55): Two sites have an area of 5 acres, a slope of 5%, a slope length of 2000, and two different surface conditions; open space with good grass cover )=(74 and a parking lot )=(98. Complete the table below using the data equations provided below.
1mi2=640 acres, 1 acre =43560ft2
tc=LV and V=a*S12,S is in ftft and V is in fts
Estimate (:qu(cfsmi2in)} using equation below
qu=102.46-0.62**log10(tc)-0.11**log10(tc2)
Note: tc is in hours and qu is in cfsmi2in
Q=(P-0.2S)2P+0.8S and S=1000CN-10
qp=quAQFp,qp= peak discharge (cfs),qu= the unit peak discharge in cfs per inch of runoff per square mile (cfsinmi2),A= drainage area in square miles (1 sq. mile =640 acres),Q= runoff in inches from 24hr storm (effective rainfall),Fp= ponding factor; 1 acre =43560ft2;;1ft=12in Calculate tc,qu,Q, and qp values for each site.
\table[[site,Fp,\table[[P],[(in)
[ 1 7 pts ] Peak Discharge estimation ( SCS - TR

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Civil Engineering Questions!