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Set 454: Water And Sanitation Engineering I Question Paper

Set 454: Water And Sanitation Engineering I

Course:Construction Engineering

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
INSTITUTE OF OPEN LEARNING
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE (CONSTRUCTION ENGINEERING)
SET 454: WATER AND SANITATION ENGINEERING I

DATE: Thursday 15th January, 2009

TIME: 8.00 a.m. – 10.00 a.m.

INSTRUCTIONS
This paper contains FIVE questions. Attempt THREE questions only.
Question 1
(a)
With the aid of neat sketches (where applicable), explain how rural communities
can obtain untreated water from rainwater harvesting and springs. [12 marks]
(b)
What is acid rain? Explain the causes for it and the types of problems that result
from it?

[8 marks]
Question 2
(a)
There are various methods used in the distribution of water in urban centres.
Explain the basic elements involved indicating why valves and surge prevention
measures should be installed in the distribution systems.

[10 marks]
(b)
Describe in detail the theory and practice of break-point chlorination.

[10 marks]
Question 3
Discuss and compare the quality and quantity of water supplies that may be available
from surface sources.

[20 marks]
Question 4
Describe in detail the theories of chemical coagulation.

[20 marks]
Question 5
(a)
How does quality criteria differ for municipal (domestic) supplies from those for
industrial supplies?

[10 marks]
(b)
Derive the expression for the settling velocity of a spherical discrete particle in
water.

[10 marks]
……………………..

Set 454: Water And Sanitation Engineering I Question Paper

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