TASKS: For this assignment, it is recommended that students work in groups of 3.Irrigation channel
- Estimate the size and slope of the proposed trapezoidal earthen channel and the drops if any required with their spacing along channel alignment. Draw a suitable diagram showing channel section(s) and drops along channel alignment if proposed. (4 marks)
2. Estimate the size and slope of proposed concrete channel and the drops if any required with their spacing along channel alignment. Draw suitable diagram showing channel section(s) and drops along channel alignment if proposed. (4 marks)
3. Discuss the differences in the trapezoidal and rectangular sections designs and advantages and disadvantages of adopting earthen and concrete. (1 mark) Sprinkler sytem
4. Design/ estimate the sprinkler system for the following showing all the calculations/ equations required
a. Calculate the water application rate in mm/hr, the irrigation time in hrs for GWR of60mm
b. Estimate flow in lateral pip, size of lateral and upstream and downstream pressure head in last lateral
c. Flow in manifold, size of manifold and upstream and downstream pressure head in manifold
d. Check the headloss across the whole system (from farthest end of the supply to the location of pump at manifold)
e. Size of the pump (based on flow and pressure head required from pump)
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