Exam (elaborations)
WSE4801 Assignment 01 Solutions Semester 1 2024
- Course
- Institution
Distinction Guaranteed
[Show more]
Seller
Follow
TrustAcademy
Reviews received
Content preview
Water and Sanitation EngineeringAssignment 1 Answers
Semester 1 2024
08 APRIL 2024
DUE DATE
0027 65 934 4052
,
,
, 1. Given that the discharge decreased from 50 m3/s after 10 days to 25 m3/s after
an additional 30 days, the expected flow on day 120 is calculated as follows;
𝑄0 = 50𝑚3 /𝑠 (Initial discharge)
𝑄1 = 25𝑚3 /𝑠 discharge after 30 days
𝑡1 = 10 𝑑𝑎𝑦𝑠
𝑡2 = 40 𝑑𝑎𝑦𝑠
𝑡3 = 120 𝑑𝑎𝑦𝑠
𝑸𝟏 = 𝑸𝟎 𝒆−𝒌(𝒕𝟐 −𝒕𝟏 )
25 = 50𝑒 −(40−10)𝑘
25
= 𝑒 −30𝑡
50
ln(0.5) = −30𝑘 ln 𝑒 (ln 𝑒 = 1)
ln(0.5)
𝑘=
−30
𝑘 = 0.023
Discharge on day 120 (𝑄2 ) is given by;
𝑸𝟐 = 𝑸𝟏 𝒆−(𝟎.𝟎𝟐𝟑)(𝒕𝟑 −𝒕𝟐 )
𝑄2 = 25𝑒 −(0.023)(120−40)
𝑄2 = 25𝑒 −1.84
𝑄2 = 3.97 𝑚3 /𝑠
The expected flow on day 120 is 3.97 m3/s.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TrustAcademy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.86. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82215 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now