Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

48 Chapter 3 Introduction to Engineering Design

x 2

x 2

x 1

x 1

14

7

(a)

(0, 0) (12, 0)(14, 0)

(0, 0)

(0, 7)

(0, 9)

Feasible (8, 3)

solution

region

(b)

■Figure 3.2

(a) The region as given by the linear inequality 120x 1  240 x 2 1680. (b) The feasible solution for Example 3.1.

TABLE 3.1 Values of the Objective Function at the

Corner Points of the Feasible Region

Corner Points (x 1 , x 2 ) Value of Z 16 x 1  24 x 2

0, 0 0

0, 7 168

12, 0 192

8, 3 200 ( max.)

It is worth noting here that most of you will take specific design classes during the next four

years. In fact, most of you will work on a relatively comprehensive design project during your

senior year. Therefore, you will learn more in depth about design process and its application

specific to your discipline. For now our intent has been to introduce you to the design process,

but keep in mind that more design is coming your way.

Civil Engineering Design Process

The civil engineering design process is slightly different from other disciplines such as mechan-

ical, electrical, or chemical engineering. As we explained in Chapter 1, civil engineering is con-

cerned with providing public infrastructure and services. Civil engineers design and supervise

the construction of buildings, roads and highways, bridges, dams, tunnels, mass transit sys-

tems, and airports. They are also involved in the design and supervision of municipal water

supplies and sewage systems. Because of the nature of their projects, they must follow specific

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