Construction Planning and Scheduling

Many textbooks have been published on construction scheduling. Many provide excellent information on a variety of scheduling subjects. Unfortunately, they are often limited in their scope, often omitting scheduling subjects that might be of particular interest to the reader. This text is written to provide broad coverage on all major scheduling subjects.

My first employment with a construction contractor was a summer job in the 1960s. Although I was given many different assignments, I have vivid memories of the arrow diagram network that I was asked to draw by hand. Fortunately, I had recently taken a class on the fundamentals of arrow diagramming, so the scheduling assignment was reasonably easy for me. A few years later, while working for a different firm, my primary responsibility was scheduling.

The scheduling effort was largely focused on the coordination of subcontractors on several different projects, for which I used the precedence diagramming method. It was during this period that I developed a strong appreciation for the value of effective scheduling and the use of precedence diagrams.

There are many approaches to providing scheduling information. Some of these are described briefly in Chapter 1.This textbook is written with a major emphasis on precedence diagramming, with only the last chapter addressing arrow diagramming. Although most scheduling is done with precedence diagrams, I also believe that an introduction to arrow diagramming is appropriate. In academic settings, I have found that students can grasp arrow diagramming more easily if they have not already been exposed to precedence diagrams.

For this reason, instructors who plan to lecture on arrow diagrams should consider jumping to Chapter 16 after the first two chapters are covered. Chapter 3 explains the fundamentals of precedence diagrams. Regardless of the scheduling technique used, successfully using scheduling information begins with accurate time estimates for activity durations, as discussed in Chapter 4.One topic seldom addressed in scheduling texts, especially in detail, is that of contract provisions related to scheduling.

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