Urban Drainage Design Exercise
OBJECTIVE:
Design the drainage system (cross-section of channels) for the particular rainfall and given catchment area. Design of cross section should be safe for the return period of 25 years or more.
OUTCOMES:
On successful completion of the problem students should be able to cover all the module outcomes that are mentioned in the module descriptor.
TASKS:
All students are required to submit individual report and make calculations for the collected data. The report should cover the following tasks:
1. Give the detailed introduction, necessity of urban drainage system and uses.
2. Calculate the peak run off rate (m3/s) for the given precipitation (rainfall) and given catchment area by Rational method.
3. For the peak run off, design the section of the canal (trapezoidal, triangular, circular or rectangular).
4. Design of the cross-section should be most-economical.
5. Slope of the channel should be for appropriate velocity that does not create erosion. .
Report Format
- Number of pages: Maximum 10 pages including references list and the appendixes (if any).
- Line spacing: Generally use 1.5 x line spacing.
- Start with the title page (including your name) or student number as requested.
- It is preferable to place figures within the text rather than group them at the end of the report.
- Give a sequential number to all figures (Fig. 1, Fig. 2, Fig. 3, etc.)
- Add a brief, informative caption to the figures.
Report Sections
The Report should contain the following sections:
- Summary
- Introduction
- Methods of designing (steps)
- Calculations
- Results & Discussion
- Conclusions and Recommendations
- References
- Appendices