Hello all,
I am trying to find the critical oxygen deficit that can happen in a river with the introduction of a continuous waste water from a treatment plant.
I have used the following parameters;
Initial BOD=L= 1.471 mg/L
Initial oxygen deficit = Do = 0.943 mg/L
Deoxygenation Rate constant =...
Can anybody tell me the difference between Rational and Modified Rational method. Lot of engineers use modified Rational Method for detention volume calcuations, is this an acceptable practice?
Thank you in advance...
Hi there!
1. Can 100 percent of sewer and Catch Basin volume be taken as the detention volume?
2. Normally the run off calculations are based on free flow conditions. Taking the 100 % of the sewer and CB volume would not assume that the pipes are running full and no longer under free flow...
I want to challenge a statement made elsewhere as follows;
Statement: In general the SWMHYMO model shows that the run off from Highway row discharges downstream before the peak flow from the external areas reaches the highway culverts.
Challenge: How this statement can be made, when most Tc...
Hi there!
I wanted to know the difference in the effect of storm duration on the Peak flows. I am reading a report that has used 12 hour storm duration to do the culvert design. Catchment areas vary from less than one hectare to more than 1000 hectares. I think 12 hour storm would result in...
