8th Edition

ISBN: 9781305104174

Author: David B. Johnson, Thomas A. Mowry

Publisher: Cengage Learning

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Textbook Question

Chapter 9.5, Problem 12E

Exercises 8-14 involve the information in Figure 9.114 on installing a drip irrigation system.

Create a Gantt chart for installing a drip irrigation system.

Task	Length	Dependencies
a. Determine water needs of plants	3 hours
b Lay out system	1 hour	a
c. Determine length of tubing needed	15 minutes	a, b
d. Determine number and type of emitters needed	15 minutes	a, b
e. Determine location of control panel	15 minutes
f. Determine number of separately controlled lines	15 minutes	a, b, d
g. Buy emitters, tubing, valves, control panel, wire	1 hour	a, b, d, e, f
h. Get wire from control panel to valves	3 hours	e, f, g
i. Put tubing in place	1 hour	b, c, f, g
j. Cut tubing	30 minutes	g, i
k. Connect cut sections of tubing	30 minutes	g, j
l. Install emitters	1 hour	d, g, i, j, k
m. Test system	15 minutes	k, l

Figure 9.114 Installing a drip irrigation system.

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Chapter 9.5, Problem 11E

Chapter 9.5, Problem 13E

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Chapter 9 Solutions

Mathematics: A Practical Odyssey

Ch. 9.1 - In Exercises 1 3, use the following information:...Ch. 9.1 - In Exercises 1 3, use the following information:...Ch. 9.1 - Prob. 3E Ch. 9.1 - Prob. 4E Ch. 9.1 - Prob. 5E Ch. 9.1 - Prob. 6E Ch. 9.1 - In exercise 7-10, determine the number of...Ch. 9.1 - Prob. 8E Ch. 9.1 - In exercise 7-10, determine the number of...Ch. 9.1 - Prob. 10E

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